Temperature-control rapid pressure relief device
By adopting a combined structure of temperature-controlled alloy and medium shutdown parts in the pressure relief device, rapid melting and emergency cut-off are achieved at the set temperature, solving the problem of slow response of existing pressure relief devices, improving the efficiency of emergency cut-off, and effectively preventing pipeline accidents.
Patent Information
- Application Number
- CN202421539678.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The existing pressure relief devices react slowly during the emergency cutoff process and cannot quickly cut off the medium, resulting in pipeline accidents that cannot be effectively prevented.
A temperature-controlled and rapid pressure relief device is designed, using a temperature-controlled alloy with over-temperature fuse characteristics, combined with the structure of a medium shutdown member and a pressure relief channel to achieve rapid melting and emergency cut-off at the set temperature.
When the ambient temperature exceeds the set safe temperature, the temperature-controlled alloy melts and the medium shutdown member moves rapidly, achieving emergency cut-off of the medium pipeline and rapid pressure relief, effectively preventing and reducing the occurrence of pipeline accidents.
Smart Images
Figure CN222669061U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve equipment, in particular to a temperature-controlled rapid pressure relief device. Background Art
[0002] In order to ensure the normal operation of the medium pipeline, an emergency cut-off system is usually installed for protection. When the pipeline environment is abnormal, the emergency cut-off system will urgently cut off the medium pipeline to prevent further pipeline accidents. Therefore, this system is widely used in medical equipment, industry, fire dampers, fire alarms, fire sprinkler devices (glass tube thermal sensing elements) and other fields.
[0003] The core executive component of the emergency cut-off system is the pressure relief device, which performs pressure relief and emergency cut-off operations. However, the pressure relief device in the prior art has a slow response to the emergency cut-off operation due to structural limitations. During the emergency cut-off process, part of the medium in the pipeline will still pass through, and the effect of rapid cut-off cannot be achieved. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a temperature-controlled rapid pressure relief device. The utility model has a temperature-controlled alloy, which has the functions of over-temperature melting and cutting off the medium, and can urgently cut off the medium pipeline and quickly relieve the pressure.
[0005] The technical solution adopted by the utility model is as follows: a temperature-controlled rapid pressure relief device, comprising a safety device body and a base connected to the safety device body, wherein an inlet channel and an outlet channel are arranged inside the safety device body, a medium shut-off piece and a shut-off seat matched with the medium shut-off piece are also arranged inside the safety device body, a pressure relief channel connected with the outlet channel is arranged inside the base, a temperature-controlled alloy that hinders the connection between the outlet channel and the pressure relief channel is arranged in the pressure relief channel, when the temperature-controlled alloy abuts against the medium shut-off piece, the medium shut-off piece is separated from the shut-off seat, and the inlet channel is connected with the outlet channel, when the temperature-controlled alloy melts, the medium shut-off piece is sealed and matched with the shut-off seat, and the inlet channel is blocked from the outlet channel.
[0006] It also includes an elastic element. A shut-off cavity is provided between the inlet channel and the outlet channel. The medium shut-off piece is slidably connected to the shut-off cavity. The elastic element is installed in the shut-off cavity and abuts against the upper end of the medium shut-off piece. The elastic element also applies an axial pre-tightening force to the medium shut-off piece.
[0007] The axis of the inlet channel is perpendicular to the axis of the shut-off chamber, and the axis of the inlet channel is colinear with the axis of the outlet channel.
[0008] It also includes an elastic element. A shut-off cavity is provided between the inlet channel and the outlet channel. The medium shut-off piece is slidably connected to the shut-off cavity. The elastic element is installed in the inlet channel and abuts against the upper end of the medium shut-off piece. The elastic element also applies an axial pre-tightening force to the medium shut-off piece.
[0009] The axis of the inlet channel is colinear with the axis of the shut-off chamber, and the axis of the inlet channel is perpendicular to the axis of the outlet channel.
[0010] The safety device body and the base are integrally formed.
[0011] The safety device body is connected to the base through threads.
[0012] The melting temperature of the temperature-control alloy is between 70°C and 80°C.
[0013] The pressure relief channel is provided with an opening facing the gravity direction, and the opening is in a flared shape with a larger outer side and a smaller inner side.
[0014] The beneficial effects of the utility model are as follows: the utility model has a temperature control alloy that melts according to the set temperature, so that when the ambient temperature exceeds the set safety temperature due to a fire accident, the temperature control alloy melts and quickly flows away from the pressure relief channel, and the medium shut-off piece moves toward the base to seal with the shut-off seat to urgently cut off the medium pipeline, and after cutting off, the medium in the outlet channel will flow out from the pressure relief channel, achieving the effect of rapid pressure relief, which can effectively prevent and reduce the occurrence of pipeline accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.
[0016] Figure 1 This is a schematic diagram of the structure of the temperature-controlled rapid pressure relief device of the utility model;
[0017] Figure 2 It is a structural schematic diagram of another embodiment of the utility model;
[0018] Figure 3 A schematic diagram of the medium pipeline installed for the utility model;
[0019] In the figure, 1-safety device body, 2-base, 3-inlet channel, 4-outlet channel, 5-medium shut-off member, 6-shut-off seat, 7-pressure relief channel, 8-temperature control alloy, 9-elastic element, 10-shut-off chamber, 11-opening, 12-driving medium source, 13-remote control solenoid valve, 14-actuator, 15-actuator control object. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.
[0021] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.
[0022] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.
[0023] like Figures 1 to 3 As shown, an embodiment of the utility model is a temperature-controlled rapid pressure relief device, comprising a safety device body 1 and a base 2 connected to the safety device body 1, wherein an inlet channel 3 and an outlet channel 4 are arranged inside the safety device body 1, a medium shut-off piece 5 and a shut-off seat 6 matched with the medium shut-off piece 5 are also arranged inside the safety device body 1, a pressure relief channel 7 connected with the outlet channel 4 is arranged inside the base 2, a temperature-controlled alloy 8 is arranged in the pressure relief channel 7 to prevent the outlet channel 4 from being connected with the pressure relief channel 7, when the temperature-controlled alloy 8 abuts against the medium shut-off piece 5, the medium shut-off piece 5 is separated from the shut-off seat 6, and the inlet channel 3 is connected with the outlet channel 4, when the temperature-controlled alloy 8 melts, the medium shut-off piece 5 is sealed and matched with the shut-off seat 6, and the inlet channel 3 is blocked from the outlet channel 4.
[0024] The beneficial effects of such a setting are as follows. The utility model has a temperature control alloy that melts according to the set temperature. When the ambient temperature exceeds the set safety temperature during a fire accident or other circumstances, the temperature control alloy melts and quickly flows away from the pressure relief channel. The medium shut-off piece moves toward the base to seal with the shut-off seat, thereby urgently cutting off the medium pipeline. After cutting off, the medium in the outlet channel will flow out of the pressure relief channel, thereby achieving the effect of rapid pressure relief, which can effectively prevent and reduce the occurrence of pipeline accidents.
[0025] The temperature controlled object includes liquid, gas or other types of media.
[0026] In order to prevent the temperature control alloy from falling off due to pressure, the inner wall of the pressure relief channel is often made into a threaded, stepped or conical shape.
[0027] Further configuration includes an elastic element 9, a shut-off cavity 10 is provided between the inlet channel 3 and the outlet channel 4, the medium shut-off piece 5 is slidably connected to the shut-off cavity 10, the elastic element 9 is installed in the shut-off cavity 10 and abuts against the upper end of the medium shut-off piece 5, and the elastic element 9 also applies an axial preload to the medium shut-off piece 5.
[0028] The beneficial effects of such a setting are as follows: after the temperature control alloy melts, the elastic element, under the action of the medium, quickly drives the medium shut-off piece to move toward the shut-off seat until the channel is completely closed. It also prevents the medium from flowing back and pushing open the medium shut-off piece, and has a check effect. The elastic element is a spring in this embodiment.
[0029] It is further provided that the axis of the inlet channel 3 is perpendicular to the axis of the shut-off chamber 10 , and the axis of the inlet channel 3 is colinear with the axis of the outlet channel 4 .
[0030] The beneficial effects of such an arrangement are as follows: the overall structure is a straight-through type, which is suitable for conventional straight-through medium pipelines.
[0031] Further configuration includes an elastic element 9, a shut-off cavity 10 is provided between the inlet channel 3 and the outlet channel 4, the medium shut-off piece 5 is slidably connected to the shut-off cavity 10, the elastic element 9 is installed in the inlet channel 3 and abuts against the upper end of the medium shut-off piece 5, and the elastic element 9 also applies an axial preload to the medium shut-off piece 5.
[0032] It is further provided that the axis of the inlet channel 3 is colinear with the axis of the shut-off chamber 10 , and the axis of the inlet channel 3 is perpendicular to the axis of the outlet channel 4 .
[0033] The beneficial effects of such an arrangement are as follows: the above is another embodiment, and the overall structure is an angle type, which is suitable for medium pipelines with more structures such as folded angles.
[0034] It is further provided that the safety device body 1 and the base 2 are integrally formed.
[0035] It is further provided that the safety device body 1 is connected to the base 2 via threads.
[0036] The beneficial effects of such an arrangement are as follows: the safety device body can be integrated with the base, or can be an independent, quickly replaceable split type; the split type connection structure can be quickly restored and reused, meeting the requirements of remanufacturing.
[0037] It is further provided that the melting temperature of the temperature control alloy 8 is between 70°C and 80°C.
[0038] The beneficial effects of this arrangement are as follows: the melting temperature of the temperature control alloy is between 50°C and 300°C, with the optimum being 70°C to 80°C. The temperature control alloy with the corresponding melting temperature is configured according to the needs of the medium pipeline to meet the requirements of different temperature control safety cut-off environments, and the temperature control alloy can be quickly restored and reused.
[0039] It is further provided that the pressure relief channel 7 is provided with an opening 11 facing the gravity direction, and the opening 11 is in a flared shape with a larger outer side and a smaller inner side.
[0040] The beneficial effects of such a setting are as follows: the opening faces the direction of gravity and the opening conforms to the Bernoulli motion effect, ensuring that the temperature control alloy flows away quickly after melting and the medium is discharged quickly.
[0041] The medium pipeline on which the temperature-controlled quick pressure relief device is installed is also connected to a driving medium source 12, a remote control solenoid valve 13, an actuator (pressure relief reset type) 14 and an actuator control object (emergency shut-off valve) 15. The temperature-controlled quick pressure relief device is installed between the remote control solenoid valve and the actuator (pressure relief reset type), and the temperature-controlled quick pressure relief device is connected to the medium pipeline by threads, flanges or welding. The temperature-controlled quick pressure relief device performs emergency shut-off and quick pressure relief on the medium pipeline, and can realize the quick reset action of the emergency shut-off valve and other controlled objects that need to be reset.
[0042] The working principle of the utility model is that, under normal working state, the medium enters the safety device body from the inlet channel, flows out from the outlet channel, and enters the actuator of the controlled object.
[0043] Under fire conditions, the temperature-controlled quick pressure relief device is exposed to or radiated by heat sources of ambient temperature, and the overall temperature rises. When the rising temperature reaches the set temperature value of the temperature-controlled alloy, the temperature-controlled alloy melts and flows away quickly from the opening of the base. Under the joint action of the elastic element and the medium, the medium shut-off member in the safety device body quickly moves toward the opening direction of the base until the medium channel of the safety device body is completely closed. At this time, the driving medium of the actuator of the controlled object is also depressurized from the opening of the base at the same time, and the actuator reset spring continues to depressurize until the actuator moves to the set cut-off position of the controlled object.
[0044] Due to the sealing effect of the medium shut-off member, the driving medium cannot continue to flow to the actuator, so that the controlled object of the actuator continues to remain in the cut-off state.
[0045] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. Temperature-controlled rapid pressure relief device, characterized in that: The invention comprises a safety device body (1) and a base (2) connected to the safety device body (1); an inlet channel (3) and an outlet channel (4) are arranged inside the safety device body (1); a medium shutoff piece (5) and a shutoff seat (6) matched with the medium shutoff piece (5) are also arranged inside the safety device body (1); a pressure relief channel (7) connected with the outlet channel (4) is arranged inside the base (2); a temperature control alloy (8) is arranged inside the pressure relief channel (7) to prevent the outlet channel (4) from being connected with the pressure relief channel (7); when the temperature control alloy (8) and the medium shutoff piece (5) are in contact with each other, the medium shutoff piece (5) and the shutoff seat (6) are separated, and the inlet channel (3) and the outlet channel (4) are connected; when the temperature control alloy (8) is melted, the medium shutoff piece (5) and the shutoff seat (6) are sealed and matched, and the inlet channel (3) and the outlet channel (4) are blocked.
2. The temperature-controlled rapid pressure relief device according to claim 1, characterized in that: The invention also comprises an elastic element (9); a shut-off cavity (10) is provided between the inlet channel (3) and the outlet channel (4); the medium shut-off member (5) is slidably connected to the shut-off cavity (10); the elastic element (9) is installed in the shut-off cavity (10) and abuts against the upper end of the medium shut-off member (5); and the elastic element (9) also applies an axial pre-tightening force to the medium shut-off member (5).
3. The temperature-controlled rapid pressure relief device according to claim 2, characterized in that: The axis of the inlet channel (3) is perpendicular to the axis of the shut-off chamber (10), and the axis of the inlet channel (3) is colinear with the axis of the outlet channel (4).
4. The temperature-controlled rapid pressure relief device according to claim 1, characterized in that: The invention also comprises an elastic element (9), a shut-off cavity (10) is provided between the inlet channel (3) and the outlet channel (4), the medium shut-off member (5) is slidably connected to the shut-off cavity (10), the elastic element (9) is installed in the inlet channel (3) and abuts against the upper end of the medium shut-off member (5), and the elastic element (9) also applies an axial pre-tightening force to the medium shut-off member (5).
5. The temperature-controlled rapid pressure relief device according to claim 4, characterized in that: The axis of the inlet channel (3) is colinear with the axis of the shut-off chamber (10), and the axis of the inlet channel (3) is perpendicular to the axis of the outlet channel (4).
6. The temperature-controlled rapid pressure relief device according to claim 1, characterized in that: The safety device body (1) and the base (2) are integrally formed.
7. The temperature-controlled rapid pressure relief device according to claim 1, characterized in that: The safety device body (1) is connected to the base (2) via threads.
8. The temperature-controlled rapid pressure relief device according to claim 1, characterized in that: The melting temperature of the temperature control alloy (8) is between 70°C and 80°C.
9. The temperature-controlled rapid pressure relief device according to claim 1, characterized in that: The pressure relief channel (7) is provided with an opening (11) facing the direction of gravity, and the opening (11) is in a flared shape with a larger outer portion and a smaller inner portion.