Fireproof pressure sensor
By designing fireproof components in the pressure sensor, the combination of hot melt column and plug is used to block fuel leakage, solving the problem of spontaneous combustion and fuel leakage of the sensor in the case of fire, and improving safety.
Patent Information
- Application Number
- CN202421572468.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The pressure sensor may spontaneously ignite or aid in the case of fire leakage caused by external fuel, and the fuel may leak through the pressure runner, aggravating the fire.
A fire-resistant pressure sensor is designed with a fire-resistant assembly, including a first housing, a hot melt column, an elastic member and a plug. The hot melt column fuses under high temperature environment, and the plug moves upward under the thrust of the elastic parts and the system pressure. The outer surface of the plug cooperates with the inner surface of the shell to form a sealing effect and block the pressure flow channel.
It effectively blocks fuel from flowing out of the sensor through the pressure runner, prevents the fire from aggravating, and improves the safety of the sensor in the case of fire.
Smart Images
Figure CN223050767U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sensors and relates to a fire-proof pressure sensor. Background Art
[0002] A pressure sensor is a device or apparatus that can sense a pressure signal and convert the pressure signal into an available output electrical signal according to a certain rule. A pressure sensor usually consists of a pressure-sensitive element and a signal processing unit. According to different types of measured pressures, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors.
[0003] A pressure sensor is one of the most commonly used sensors in industrial practice and is widely used in various industrial automatic control environments, involving many industries such as military, petrochemical, oil wells, and so on. However, during the use of a pressure sensor, in the case of a fire caused by external fuel leakage, the pressure sensor may self-ignite or assist combustion. In addition, the fuel in the pressure sensor may leak to the outside of the pressure sensor through the pressure flow channel, thus aggravating the fire.
[0004] Therefore, how to propose a fire-proof pressure sensor that prevents fuel leakage is a technical problem to be solved urgently. Summary of the Utility Model
[0005] In order to solve the technical problem that the fuel in the above-mentioned pressure sensor may leak to the outside of the pressure sensor through the pressure flow channel, the utility model provides a fire-proof pressure sensor.
[0006] A fire-proof pressure sensor provided by the utility model includes: a fire-proof component, and a pressure core and a pressure joint respectively connected to both ends of the fire-proof component;
[0007] The fire-proof component includes a first housing and a heat-melting column arranged in the first housing;
[0008] An elastic member is sleeved outside the heat-melting column, a plug is arranged at the top of the elastic member, and the outer surface of the plug is matched with the inner surface of the first housing.
[0009] Further, the fire-proof component further includes a mounting base, the mounting base is provided with uniformly arranged openings, a first cavity is formed between the heat-melting column and the elastic member, a second cavity is formed between the plug and the first housing, and air enters the first cavity and the second cavity from the openings to form a pressure flow channel.
[0010] Further, the pressure core is a differential pressure core or a gauge pressure core or an absolute pressure core.
[0011] Furthermore, the fire prevention component includes a first fire prevention component connected to the differential pressure core body and a second fire prevention component connected to the gauge pressure core body or the absolute pressure core body;
[0012] The differential pressure core body includes a first pressure sensing surface and a second pressure sensing surface which are oppositely arranged. The first fire prevention component includes a first fire prevention member and a second fire prevention member which are arranged in parallel. The first fire prevention member is connected to the first pressure sensing surface, and a pressure adapter is connected to the second pressure sensing surface.
[0013] Furthermore, the pressure adapter includes a first pressure transfer pipeline and a second pressure transfer pipeline which is perpendicular to the first pressure transfer pipeline. The first pressure transfer pipeline is connected to the second fire prevention member, and the second pressure transfer pipeline is connected to the second pressure sensing surface.
[0014] Furthermore, the gauge pressure core body or the absolute pressure core body includes a third pressure sensing surface, and the second fire prevention component includes a third fire prevention member, and the third pressure sensing surface is connected to the third fire prevention member.
[0015] Furthermore, the pressure joint includes a first pressure joint connected to the first fire prevention component and a second pressure joint connected to the second fire prevention component;
[0016] The first pressure joint includes a first pressure guiding head and a second pressure guiding head which are arranged in parallel. The first pressure guiding head is connected to the first fire prevention member, and the second pressure guiding head is connected to the second fire prevention member;
[0017] The second pressure joint includes a third pressure guiding head, and the third pressure guiding head is connected to the third fire prevention member.
[0018] Furthermore, an external thread is provided on the mounting base, and an internal thread is provided on the first housing, and the external thread and the internal thread cooperate with each other.
[0019] Furthermore, a first sealing groove is provided in the pressure core body, and a second sealing groove is provided in the pressure adapter, and O-ring seals are respectively provided in the first sealing groove and the second sealing groove.
[0020] Furthermore, the O-ring seal is made of rubber.
[0021] Compared with the prior art, the fire prevention type pressure sensor provided by the present utility model effectively blocks the fuel from flowing out of the pressure sensor through the pressure flow channel by providing a fire prevention component, and the outer surface of the plug in the fire prevention component cooperates with the inner surface of the first housing. Description of the Drawings
[0022] Figure 1A cross-sectional view of a first fireproof pressure sensor provided by an embodiment of the present utility model;
[0023] Figure 2 A cross-sectional view of a fireproof component provided by an embodiment of the present utility model;
[0024] Figure 3 A cross-sectional view of a second fireproof pressure sensor provided by an embodiment of the present utility model;
[0025] Among them, 10 is a fireproof component, 11 is a first housing, 12 is a hot melt column, 13 is an elastic member, 14 is a plug, 15 is a mounting base, 16 is a pressure flow channel, 17 is a first fireproof component, 171 is a first fireproof member, 172 is a second fireproof member, 18 is a second fireproof component, 181 is a third fireproof member, 20 is a pressure core, 21 is a differential pressure core, 211 is a first pressure sensing surface, 212 is a second pressure sensing surface, 22 is a gauge pressure core, 221 is a third pressure sensing surface, 23 is an absolute pressure core, 24 is a first sealing groove, 30 is a pressure joint, 31 is a first pressure joint, 311 is a first pressure guiding head, 312 is a second pressure guiding head, 32 is a second pressure joint, 321 is a third pressure guiding head, 40 is a pressure adapter, 41 is a first pressure transfer pipeline, 42 is a second pressure transfer pipeline, 43 is a second sealing groove, 50 is an O-ring, and 60 is a circuit component. Detailed implementation manners
[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0027] In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description of the implementation manners and specific embodiments of the present utility model; however, this is not the only form for implementing or applying the specific embodiments of the present utility model. The implementation manners cover the features of multiple specific embodiments and the method steps and their sequences for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.
[0028] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here.
[0029] In the description of the embodiments of the present utility model, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; "and / or" in the text is only a relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two, and other quantifiers are similar. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. And without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0030] In order to solve the technical problem that the fuel in the above-mentioned pressure sensor may leak to the outside of the pressure sensor through the pressure flow channel, the present utility model provides a pressure sensor. Please refer to Figure 1-2 , Figure 1 is a cross-sectional view of a first fire-proof pressure sensor provided by an embodiment of the present utility model. Figure 2 is a cross-sectional view of a fire-proof component provided by an embodiment of the present utility model. The fire-proof pressure sensor includes: a fire-proof component 10, and a pressure core 20 and a pressure joint 30 respectively connected to both ends of the fire-proof component 10; the fire-proof component 10 includes a first housing 11 and a heat-melting column 12 arranged in the first housing; an elastic member 13 is sleeved outside the heat-melting column 12, a plug 14 is arranged at the top of the elastic member 13, and the outer surface of the plug 14 cooperates with the inner surface of the first housing 11. Specifically, in the embodiment of the present utility model, by arranging the fire-proof component 10, when a fire occurs outside, the heat-melting column 12 in the fire-proof component melts in a high-temperature environment, and then the plug moves upward under the thrust of the elastic member and the system pressure. The outer surface of the plug 14 in the fire-proof component cooperates with the inner surface of the first housing 11; at the same time, the molten heat-melting column material accumulates near the plug 14, further improving the sealing effect and realizing the function of blocking the pressure flow channel.
[0031] It should be noted that the elastic member 13 can be a spring or other elastic members, which is specifically set according to actual needs, and the embodiments of the present utility model do not make further limitations.
[0032] As a further improvement of the present utility model, the fire prevention component 10 further includes an installation base 15, which is provided with uniformly arranged openings. A first cavity is formed between the hot melt column 12 and the elastic member 13, and a second cavity is formed between the plug 14 and the first housing 11. Air enters the first cavity and the second cavity from the openings to form a pressure flow channel 16. Specifically, in the embodiment of the present utility model, the material of the hot melt column can be selected accordingly according to the corresponding temperature. For example, PTFE material can be selected when the melting point is 330 °C, and 6061 aluminum alloy material can be selected when the melting point is 600 °C.
[0033] As a further improvement of the present utility model, please refer to Figure 3 , Figure 3 which is a cross-sectional view of a second fireproof pressure sensor provided by an embodiment of the present utility model. The pressure core 20 is a differential pressure core 21 or a gauge pressure core or an absolute pressure core. Specifically, in the embodiment of the present utility model, the pressure core 20 of the differential pressure sensor is a differential pressure core 21, the pressure core 20 of the gauge pressure sensor is a gauge pressure core 22, and the pressure core 20 of the absolute pressure sensor is an absolute pressure core 23. Among them, Figure 1 the pressure core of the first fireproof pressure sensor in Figure 3 is a differential pressure core 21, and the pressure core of the second fireproof pressure sensor in
[0034] As a further improvement of the present utility model, the fire prevention component 10 includes a first fire prevention component 17 connected to the differential pressure core 21 and a second fire prevention component 18 connected to the gauge pressure core 22 or the absolute pressure core 23. The differential pressure core 21 includes a first pressure sensing surface 211 and a second pressure sensing surface 212 arranged oppositely. The first fire prevention component 17 includes a first fire prevention member 171 and a second fire prevention member 172 arranged in parallel, and the first fire prevention member 171 is connected to the first pressure sensing surface 211, and a pressure adapter 40 is connected to the second pressure sensing surface 212. Specifically, in the embodiment of the present utility model, the differential pressure core 21 is a pressure sensitive device, which can convert a pressure signal into an electrical signal with a certain law. The first pressure sensing surface 211 and the second pressure sensing surface 212 can respectively sense the pressures of two different pipelines of the system.
[0035] As a further improvement of the present utility model, the pressure adapter 40 includes a first pressure transfer pipeline 41 and a second pressure transfer pipeline 42 that is perpendicularly arranged to the first pressure transfer pipeline 41. The first pressure transfer pipeline 41 is connected to the second fire prevention member 172, and the second pressure transfer pipeline 42 is connected to the second pressure sensing surface 212. Specifically, in the embodiment of the present utility model, when the pressure core 20 is a differential pressure core 21, the differential pressure core 21 is connected to a pressure adapter 40, and a set of pressures of the object to be measured can be introduced to the second pressure sensing surface 212 of the differential pressure core.
[0036] As a further improvement of the present utility model, the gauge pressure core 22 or the absolute pressure core 23 includes a third pressure sensing surface 221, the second fire prevention assembly 18 includes a third fire prevention member 181, and the third pressure sensing surface 221 is connected to the third fire prevention member 181. It should be noted that the gauge pressure core 22 and the absolute pressure core 23 usually do not have a pressure adapter 40, and the third pressure sensing surface 221 is directly connected to the third fire prevention member 181.
[0037] As a further improvement of the present utility model, the pressure joint 30 includes a first pressure joint 31 connected to the first fire prevention assembly 17 and a second pressure joint 32 connected to the second fire prevention assembly 18; the first pressure joint 31 includes a first pressure guiding head 311 and a second pressure guiding head 312 arranged in parallel, the first pressure guiding head 311 is connected to the first fire prevention member 171, and the second pressure guiding head 312 is connected to the second fire prevention member 172; the second pressure joint 32 includes a third pressure guiding head 321, and the third pressure guiding head 321 is connected to the third fire prevention member 181. In the embodiment of the present utility model, the pressure joint 30 is used to introduce a pressure medium to achieve mechanical connection with the object to be measured, and at the same time provide an installation basis for components such as the pressure core 20 and the fire prevention assembly 10.
[0038] As a further improvement of the present utility model, an external thread (not shown in the figure) is provided on the mounting base 15, and an internal thread (not shown in the figure) is provided on the first housing 11, and the external thread and the internal thread cooperate with each other. Specifically, in the embodiment of the present utility model, the mounting base 15 and the first housing 11 can be connected by the cooperation of the external thread and the internal thread, or can be connected by laser welding.
[0039] It should be noted that the fireproof pressure sensor further includes a circuit assembly 60, and the circuit assembly 60 is electrically connected to the pressure core 20; the circuit assembly can compensate, amplify, filter, etc. the electrical signal of the pressure core 20 and output a specified electrical signal.
[0040] As a further improvement of the present utility model, a first sealing groove 24 is provided in the pressure core body 20, and a second sealing groove 43 is provided in the pressure adapter 40. O-ring seals 50 are respectively provided in the first sealing groove 24 and the second sealing groove 43. Specifically, in the embodiment of the present utility model, O-ring seals 50 are respectively provided in the sealing grooves of the pressure core body 20 and the pressure adapter 40 to achieve the sealing of the pressure core body 20 and the pressure adapter 40 under normal working conditions to prevent fuel leakage.
[0041] As a further improvement of the present utility model, the O-ring seal 50 is made of rubber. Specifically, in the embodiment of the present utility model, the O-ring seal 50 is made of rubber. Rubber has good sealing performance, excellent elasticity and plasticity, and can effectively fill the gaps of the seal to ensure that fuel does not leak.
[0042] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0043] The above embodiments only represent the preferred embodiments of the present utility model, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.
Claims
1. A fireproof pressure sensor, characterized in that: include: A fireproof component, and a pressure core and a pressure joint respectively connected to two ends of the fireproof component; The fireproof assembly includes a first shell and a hot melt column arranged in the first shell; An elastic piece is sleeved on the outer side of the hot melt column, a plug is arranged on the top of the elastic piece, and the outer surface of the plug cooperates with the inner surface of the first shell.
2. The fireproof pressure sensor according to claim 1, characterized in that: The fireproof assembly also includes a mounting base, which is provided with evenly arranged openings, a first cavity is formed between the hot melt column and the elastic member, a second cavity is formed between the plug and the first shell, and air enters the first cavity and the second cavity from the opening to form a pressure flow channel.
3. The fireproof pressure sensor according to claim 2, characterized in that: The pressure core is a differential pressure core, a gauge pressure core, or an absolute pressure core.
4. The fireproof pressure sensor according to claim 3, characterized in that: The fireproof assembly comprises a first fireproof assembly connected to the pressure difference core, and a second fireproof assembly connected to the gauge pressure core or the absolute pressure core; The pressure differential core includes a first pressure-sensitive surface and a second pressure-sensitive surface that are arranged opposite to each other, the first fire-proof component includes a first fire-proof component and a second fire-proof component that are arranged in parallel, and the first pressure-sensitive surface is connected to the first fire-proof component, and the second pressure-sensitive surface is connected to a pressure adapter.
5. The fireproof pressure sensor according to claim 4, characterized in that: The pressure adapter includes a first pressure adapter pipe and a second pressure adapter pipe vertically arranged to the first pressure adapter pipe, and the first pressure adapter pipe is connected to the second fireproof component, and the second pressure adapter pipe is connected to the second pressure sensing surface.
6. The fireproof pressure sensor according to claim 5, characterized in that: The gauge pressure core or the absolute pressure core includes a third pressure-sensitive surface, the second fire-proof assembly includes a third fire-proof component, and the third pressure-sensitive surface is connected to the third fire-proof component.
7. The fireproof pressure sensor according to claim 6, characterized in that: The pressure joint comprises a first pressure joint connected to the first fireproof component, and a second pressure joint connected to the second fireproof component; The first pressure joint comprises a first pressure lead and a second pressure lead arranged in parallel, the first pressure lead is connected to the first fireproof component, and the second pressure lead is connected to the second fireproof component; The second pressure joint includes a third pressure inlet head, and the third pressure inlet head is connected to the third fireproof component.
8. The fireproof pressure sensor according to claim 7, characterized in that: The mounting base is provided with an external thread, and the first shell is provided with an internal thread, and the external thread and the internal thread cooperate with each other.
9. The fireproof pressure sensor according to claim 8, characterized in that: The pressure core is provided with a first sealing groove, the pressure adapter is provided with a second sealing groove, and the first sealing groove and the second sealing groove are respectively provided with O-rings.
10. The fireproof pressure sensor according to claim 9, characterized in that: The O-ring is made of rubber.