Mechanical hydraulic temperature sensing trigger device

Abstract

The utility model relates to a mechanical hydraulic temperature sensing trigger device, which belongs to the technical field of fire fighting equipment, and comprises a pipe body, a core pipe, a thermosensitive pressure relief element, an elastic piece, a fixed pin and a movable pin, one end of the pipe body is provided with a joint assembly, the other end of the pipe body is provided with a step hole, and a hydraulic oil cavity is formed between a first pipe section and the joint assembly; the fourth pipe section extends out of the step hole, the third pipe section is sleeved with the elastic piece, the two ends of the elastic piece abut against the second pipe section and the step face of the step hole respectively, a plug is arranged at the end, close to the hydraulic oil cavity, of the core pipe, and the other end of the core pipe is a closed end. The fixed pin vertically and transversely penetrates through the pipe body and the pipe hole of the core pipe in the radial direction, the movable pin and the thermosensitive pressure relief element are arranged in the pipe hole of the core pipe, the thermosensitive pressure relief element is located in the first pipe section, and the two ends of the movable pin abut against the fixed pin and the thermosensitive pressure relief element respectively. The failure rate is low.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, and specifically relates to a mechanical hydraulic temperature-sensing triggering device. Background Technology

[0002] Fires pose a significant threat to people's lives, property, and safety. Early detection and control of a fire can greatly reduce losses and protect lives. Currently, various types of system triggering devices are available for fire extinguisher cylinder valves, such as electrically controlled automatic triggering devices, electrically controlled manual triggering devices, mechanical pneumatic automatic triggering devices, mechanical pneumatic manual triggering devices, and fire detection tube pneumatic pressure relief triggering devices. However, electrically controlled products are highly dependent on actual operating conditions. If the system experiences a power outage, component failure, or damaged connecting cables, the fire extinguishing system will immediately fail, losing its fire protection function. Mechanical pneumatic driven systems rely on pressure increases or instantaneous pressure releases to trigger the fire extinguishing system. However, in actual operating conditions, factors such as vibration, temperature, and air pressure can easily cause pipe loosening and pressure leakage, affecting the system's normal triggering.

[0003] Therefore, a mechanical hydraulic temperature-sensing triggering device with high sensitivity, stable triggering, and low failure rate is urgently needed. Utility Model Content

[0004] This invention provides a mechanical hydraulic temperature-sensing triggering device to solve the technical problems of existing fire extinguisher triggering devices being greatly constrained by actual working conditions and having a high failure rate.

[0005] This utility model is achieved through the following technical solution: a mechanical hydraulic temperature-sensing triggering device, comprising a tube body, a core tube, a thermosensitive pressure relief element, an elastic element, a fixing pin, and a moving pin. One end of the tube body is provided with a connector assembly, and the other end is provided with a stepped hole communicating with the tube hole of the tube body. The core tube is disposed within the tube body and includes a first tube segment, a second tube segment, a third tube segment, and a fourth tube segment. A hydraulic oil chamber is formed between the first tube segment and the connector assembly. The hydraulic oil chamber is communicated with the triggering connector of a bottle head valve through the connector assembly. The fourth tube segment extends out of the stepped hole. The elastic element is sleeved outside the third tube segment, and both ends of the elastic element abut against the stepped surfaces of the second tube segment and the stepped hole, respectively. One end of the core tube near the hydraulic oil chamber is provided with a plug, and the other end is a closed end. The fixing pin traverses radially perpendicularly through the tube hole of the tube body and the core tube. The moving pin and the thermosensitive pressure relief element are disposed within the tube hole of the core tube. The thermosensitive pressure relief element is located within the first tube segment, and both ends of the moving pin abut against the fixing pin and the thermosensitive pressure relief element, respectively.

[0006] To better realize this utility model, further optimizations are made to the above structure. The connector assembly includes a connector cover and a high-pressure oil pipe. The connector cover is screwed to one end of the pipe body. The two ends of the high-pressure oil pipe are respectively connected to the connector cover and the trigger connector of the bottle head valve. The connector cover is provided with a central hole, which connects the hydraulic oil chamber and the high-pressure oil pipe.

[0007] To better realize this utility model, further optimizations are made to the above structure. The outer wall of the first pipe section and the inner wall of the pipe body are in clearance fit. The outer wall of the first pipe section is provided with an annular groove, and a sealing ring is provided in the annular groove.

[0008] To better realize this utility model, further optimization is made to the above structure. The pipe wall of the pipe body is provided with a pressure relief port that communicates with the hydraulic oil chamber, and a set screw is provided in the pressure relief port.

[0009] To better realize this utility model, the above structure is further optimized, and the pipe wall of the pipe body is provided with a side window that is radially aligned with the position of the fourth pipe segment.

[0010] To better realize this utility model, further optimizations are made to the above structure. The tube wall of the tube body is provided with a through hole for installing the fixing pin, the core tube is provided with a U-shaped hole corresponding to the position of the through hole, the fixing pin and the through hole are interference fit, and the fixing pin and the U-shaped hole are clearance fit.

[0011] To better realize this utility model, the above structure is further optimized, and the elastic element is a spring or multiple disc springs.

[0012] To better realize this utility model, the above structure is further optimized, and the plug is a rubber plug.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model provides a mechanical hydraulic temperature-sensing triggering device comprising a tube body, a core tube, a thermosensitive pressure-relieving element, an elastic element, a fixing pin, and a moving pin. One end of the tube body has a connector assembly, and the other end has a stepped hole communicating with the tube bore of the tube body. The core tube is disposed within the tube body and includes a first section, a second section, a third section, and a fourth section. A hydraulic oil chamber is formed between the first section and the connector assembly, and the hydraulic oil chamber communicates with the triggering connector of the cylinder valve through the connector assembly. The fourth section extends out of the stepped hole. The elastic element is sleeved outside the third section, with both ends of the elastic element abutting against the stepped surfaces of the second section and the stepped hole, respectively. A plug is provided at one end of the core tube near the hydraulic oil chamber, and the other end is a closed end. The fixing pin passes radially perpendicularly through the tube bore of the tube body and the core tube, and the moving pin... The pin and the thermal pressure relief element are set inside the tube hole of the core tube. The thermal pressure relief element is located in the first tube section. The two ends of the movable pin abut against the fixed pin and the thermal pressure relief element, respectively. With this structure, in non-fire conditions, the thermal pressure relief element and the elastic element maintain pressure balance with the cooperation of the movable pin, the fixed pin and the core shaft. When the ambient temperature reaches the set temperature of the thermal pressure relief element, the thermal pressure relief element breaks and disintegrates, causing the elastic element to push the core tube toward one end of the connector assembly. This allows the hydraulic oil in the hydraulic oil chamber to be pressed into the bottle head valve through the connector assembly, causing the valve core in the bottle head valve to move to open the valve for fire extinguishing. The thermal pressure relief element has high sensitivity, high stability of the hydraulic trigger release process, and low failure rate, making this utility model more practical. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the mechanical hydraulic temperature-sensing triggering device in this utility model;

[0017] Figure 2 This is a perspective view of the mechanical hydraulic temperature-sensing triggering device of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the fixing pin and the core tube in this utility model.

[0019] In the picture:

[0020] 1-Pipe body; 2-Core tube; 3-Thermosensitive pressure relief element; 4-Elastic element; 5-Fixing pin; 6-Moving pin; 7-Stepped hole; 8-First pipe section; 9-Second pipe section; 10-Third pipe section; 11-Fourth pipe section; 12-Hydraulic oil chamber; 13-Plug; 14-Connector cover; 15-High-pressure oil pipe; 16-Center hole; 17-Sealing ring; 18-Top screw; 19-Side window; 20-U-shaped hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Example 1:

[0025] In this embodiment, a mechanical hydraulic temperature-sensing triggering device, such as... Figure 1 and Figure 2As shown, the device includes a tube body 1, a core tube 2, a thermosensitive pressure relief element 3, an elastic element 4, a fixing pin 5, and a moving pin 6. Specifically, one end of the tube body 1 is provided with a connector assembly, and the other end is provided with a stepped hole 7 communicating with the tube hole of the tube body 1. The core tube 2 is disposed inside the tube body 1 and includes a first tube segment 8, a second tube segment 9, a third tube segment 10, and a fourth tube segment 11. A hydraulic oil chamber 12 is formed between the end face of the first tube segment 8 and the connector assembly. The hydraulic oil chamber 12 is connected to the trigger connector of the bottle head valve through the connector assembly. Both the hydraulic oil chamber 12 and the connector assembly are filled with flame-retardant hydraulic oil and are connected to the flame-retardant hydraulic oil in the trigger connector of the bottle head valve. The fourth tube segment 11 extends out of the stepped hole 7. The elastic element 4 is sleeved outside the third pipe section 10. The two ends of the elastic element 4 abut against the stepped surfaces of the second pipe section 9 and the stepped hole 7, respectively. The core tube 2 is provided with a plug 13 at one end near the hydraulic oil chamber 12 and the other end is a closed end. The plug 13 is preferably a rubber plug 13 to ensure sealing and prevent oil leakage. The fixing pin 5 passes through the pipe hole of the pipe body 1 and the core tube 2 in a radial direction. The moving pin 6 and the thermal pressure relief element 3 are arranged in the pipe hole of the core tube 2. The thermal pressure relief element 3 is located in the first pipe section 8. The two ends of the moving pin 6 abut against the fixing pin 5 and the thermal pressure relief element 3, respectively. The thermal pressure relief element 3 is prior art and can be broken and disintegrated after the temperature reaches the set value.

[0026] With this structure, in non-fire situations, the thermal pressure relief element 3 and the elastic element 4 maintain pressure balance with the cooperation of the movable pin 6, the fixed pin 5, and the spindle. When the ambient temperature reaches the set temperature of the thermal pressure relief element 3, the thermal pressure relief element 3 breaks and disintegrates, thereby breaking the pressure balance between the thermal pressure relief element 3 and the elastic element 4. This causes the elastic element 4 to push the core tube 2 towards one end of the connector assembly, thereby pressing the flame-retardant hydraulic oil in the hydraulic oil chamber 12 into the bottle head valve through the connector assembly. This causes the valve core in the bottle head valve to move to open the valve for fire extinguishing. The thermal pressure relief element 3 has high sensitivity, high stability of the hydraulic trigger release process, and low failure rate, making this utility model more practical.

[0027] In this embodiment, as Figure 1As shown, the aforementioned connector assembly includes a connector cover 14 and a high-pressure oil pipe 15. The connector cover 14 is used to connect the high-pressure oil pipe 15 and the pipe body 1 in series. The connector cover 14 is screwed onto one end of the pipe body 1, and the screwed connection position needs to be sealed using a rubber ring or similar method. The two ends of the high-pressure oil pipe 15 are respectively connected to the connector cover 14 and the trigger connector of the cylinder head valve. The connector cover 14 has a central hole 16, which connects the hydraulic oil chamber 12 and the high-pressure oil pipe 15. Flame-retardant hydraulic oil can be filled into the high-pressure oil pipe 15 and the hydraulic oil chamber 12 through the one-way oil replenishment port of the cylinder head valve until the hydraulic oil monitoring pressure gauge on the cylinder head valve shows a change. When the change occurs, the oil injection stops. At this time, the heat-sensitive pressure relief element 3 and the elastic element 4 in the trigger device, which are in the initial assembly state, maintain pressure balance. The core tube 2 will not exert thrust on the flame-retardant hydraulic oil in the hydraulic oil chamber 12. The valve core in the bottle head valve is also in the initial position, and the valve passage is closed. When a fire occurs, the heat-sensitive pressure relief element 3 breaks and disintegrates. The core tube 2 pushes the flame-retardant hydraulic oil in the hydraulic oil chamber 12 to the high-pressure oil pipe 15, thereby pushing the flame-retardant hydraulic oil in the high-pressure oil pipe 15 into the bottle head valve, thereby pushing the valve core in the bottle head valve to move until the valve passage opens, so that the extinguishing agent in the fire extinguishing can is sprayed out to extinguish the fire.

[0028] In this embodiment, the outer wall of the first pipe section 8 and the inner wall of the pipe body 1 are in clearance fit, so that the core tube 2 can move inside the pipe body 1 under the action of the elastic member 4. The outer wall of the first pipe section 8 is provided with an annular groove, and a sealing ring 17 is provided in the annular groove. The sealing ring 17 plays the role of sealing the gap between the outer wall of the first pipe section 8 and the inner wall of the pipe body 1, preventing the flame-retardant hydraulic oil in the hydraulic oil chamber 12 from overflowing and depressurizing.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the pipe wall of the above-mentioned pipe body 1 is provided with a pressure relief port that communicates with the above-mentioned hydraulic oil chamber 12. The pressure relief port is provided with a set screw 18. When the hydraulic oil needs to be replaced or repaired, the set screw 18 is removed and the pressure relief port is opened to discharge the hydraulic oil. The end of the set screw 18 is provided with a cross opening for easy removal.

[0030] In order for the aforementioned thermal pressure-sensitive element to more accurately sense the ambient temperature, such as Figures 1 to 3 As shown, the pipe wall of the above-mentioned pipe body 1 is provided with a side window 19 that is radially aligned with the position of the above-mentioned fourth pipe section 11. The side window 19 exposes the above-mentioned fourth pipe section 11 to the environment. As an optimization, the above-mentioned fourth pipe section 11 is also provided with a window, so that the above-mentioned heat-sensitive pressure relief element 3 is exposed to the environment, thereby accurately sensing the ambient temperature and achieving the function of monitoring the fire.

[0031] In this embodiment, as Figures 1 to 3As shown, the tube wall of the tube body 1 is provided with two through holes for installing the fixing pin 5. The two through holes are arranged symmetrically in the radial direction. The core tube 2 is provided with a U-shaped hole 20 corresponding to the position of the through hole. The U-shaped hole 20 communicates with the tube hole of the core tube 2. The fixing pin 5 and the through hole are interference fit, and the fixing pin 5 and the U-shaped hole 20 are clearance fit. The through hole fixes the fixing pin 5 to the tube body 1. The fixing pin 5 passes through the U-shaped hole 20, so that the core tube 2 can move laterally along the stroke length of the U-shaped hole 20.

[0032] In this embodiment, the elastic element 4 is a spring or multiple disc springs, which provides the core tube 2 with the force of the squeezed hydraulic oil.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A mechanical hydraulic temperature-sensing triggering device, characterized in that: The device includes a tube body (1), a core tube (2), a thermosensitive pressure relief element (3), an elastic element (4), a fixing pin (5), and a moving pin (6). One end of the tube body (1) is provided with a connector assembly, and the other end is provided with a stepped hole (7) communicating with the tube hole of the tube body (1). The core tube (2) is disposed inside the tube body (1). The core tube (2) includes a first tube section (8), a second tube section (9), a third tube section (10), and a fourth tube section (11). The first tube section (8) and the connector assembly form a hydraulic oil chamber (12). The hydraulic oil chamber (12) is connected to the trigger connector of the bottle head valve through the connector assembly. The fourth tube section (11) extends out of the stepped pin assembly. The step hole (7) is fitted over the third pipe section (10). The two ends of the elastic element (4) abut against the step surface of the second pipe section (9) and the step hole (7), respectively. The core tube (2) has a plug (13) at one end near the hydraulic oil chamber (12) and the other end is a closed end. The fixing pin (5) passes through the pipe hole of the pipe body (1) and the core tube (2) radially and vertically. The moving pin (6) and the thermosensitive pressure relief element (3) are arranged in the pipe hole of the core tube (2). The thermosensitive pressure relief element (3) is located in the first pipe section (8). The two ends of the moving pin (6) abut against the fixing pin (5) and the thermosensitive pressure relief element (3), respectively.

2. The mechanical hydraulic temperature-sensing triggering device according to claim 1, characterized in that: The connector assembly includes a connector cover (14) and a high-pressure oil pipe (15). The connector cover (14) is screwed to one end of the pipe body (1). The two ends of the high-pressure oil pipe (15) are respectively connected to the connector cover (14) and the trigger connector of the bottle head valve. The connector cover (14) is provided with a central hole (16), which connects the hydraulic oil chamber (12) and the high-pressure oil pipe (15).

3. The mechanical hydraulic temperature-sensing triggering device according to claim 1, characterized in that: The outer wall of the first pipe section (8) and the inner wall of the pipe body (1) are in clearance fit. The outer wall of the first pipe section (8) is provided with an annular groove, and a sealing ring (17) is provided in the annular groove.

4. The mechanical hydraulic temperature-sensing triggering device according to claim 1, characterized in that: The pipe wall of the pipe body (1) is provided with a pressure relief port that communicates with the hydraulic oil chamber (12), and a set screw (18) is provided in the pressure relief port.

5. The mechanical hydraulic temperature-sensing triggering device according to claim 1, characterized in that: The pipe wall of the pipe body (1) is provided with a side window (19) that is radially aligned with the position of the fourth pipe section (11).

6. The mechanical hydraulic temperature-sensing triggering device according to claim 1, characterized in that: The tube body (1) has a through hole for installing the fixing pin (5) on its wall. The core tube (2) has a U-shaped hole (20) corresponding to the position of the through hole. The fixing pin (5) and the through hole are interference fit, and the fixing pin (5) and the U-shaped hole (20) are clearance fit.

7. The mechanical hydraulic temperature-sensing triggering device according to claim 1, characterized in that: The elastic element (4) is a spring or multiple disc springs.

8. The mechanical hydraulic temperature-sensing triggering device according to claim 1, characterized in that: The plug (13) is a rubber plug.

Images