Dual-mode talkback explosion-proof terminal for combustible gas monitoring

Abstract

The utility model discloses a combustible gas monitoring dual-mode talkback explosion-proof terminal comprising a terminal body and a talkback assembly, the terminal body comprises a housing, the housing is provided with a pickup hole, the housing is also provided with an installation part, and the installation part is arranged in a ring shape surrounding the pickup hole; the talkback assembly comprises a first connecting piece, a second connecting piece and a talkback pipeline, the first connecting piece and the second connecting piece are both arranged in an annular shape, the first connecting piece and the second connecting piece are both made of hard materials, the first connecting piece is installed at one end of the talkback pipeline, and the second connecting piece is installed at the other end of the talkback pipeline. And one of the first connecting piece and the second connecting piece can be selectively mounted on the mounting part. According to the technical scheme of the utility model, a user can be prevented from directly using the talkback function of the terminal in a combustible gas environment.

Description

Technical Field

[0001] The utility model relates to the technical field of intercoms, in particular to a dual-mode intercom explosion-proof terminal for monitoring combustible gas. Background Art

[0002] In industries such as petrochemicals, mining, and natural gas processing, the working environment is often filled with flammable and explosive combustible gases. These environments place extremely high demands on the safety of workers. Therefore, the monitoring of combustible gases and timely communication between personnel become particularly important. Effective combustible gas monitoring can prevent potential safety accidents, while a reliable communication system ensures rapid response in emergencies and effective coordination and rescue work. Therefore, equipment that can be used in these high-risk environments, especially explosion-proof terminals that integrate combustible gas monitoring and intercom functions, are crucial to ensuring the safety of workers.

[0003] However, the terminals that integrate combustible gas monitoring and intercom functions in the prior art have obvious disadvantages. When workers need to monitor combustible gas, they must be in an environment where combustible gas is present. At this time, if they need to use the intercom function for communication, they will not only face the risk of oral inhalation of more combustible gas, but also may cause a series of adverse phenomena. First, speaking may cause the combustible gas to mix with the air, change the concentration distribution of the combustible gas in the surrounding environment, and affect the accuracy of the combustible gas monitoring results. Secondly, the static electricity generated by human activities (including the movement of lips and teeth when speaking) may discharge under certain conditions and trigger an explosion. For this reason, improvements are needed. Utility Model Content

[0004] The main purpose of the utility model is to propose a dual-mode intercom explosion-proof terminal for combustible gas monitoring, aiming to solve the technical problem that the oral cavity of the user is directly exposed to the combustible gas environment when using the terminal integrating combustible gas monitoring and intercom functions.

[0005] To achieve the above-mentioned purpose, the utility model proposes a dual-mode intercom explosion-proof terminal for combustible gas monitoring, including a terminal body and an intercom component, the terminal body including a shell, the shell is provided with a sound pickup hole, the shell is also provided with a mounting portion, the mounting portion is arranged in a ring shape surrounding the sound pickup hole; the intercom component includes a first connecting piece, a second connecting piece and an intercom pipe, the first connecting piece and the second connecting piece are both arranged in a ring shape, and the material of the first connecting piece and the material of the second connecting piece are both hard materials, the first connecting piece is installed at one end of the intercom pipe, and the first connecting piece and the second connecting piece can be selectively installed on the mounting portion.

[0006] Optionally, the shell includes a peripheral wall portion and a top end wall and a bottom end wall respectively provided at opposite ends of the peripheral wall portion;

[0007] The sound pickup hole is formed on the bottom end wall, the mounting portion is an annular groove formed on the bottom end wall, and the first connecting member and the second connecting member can be inserted into the annular groove respectively.

[0008] Optionally, a microphone is provided in the housing;

[0009] The groove wall of the annular groove includes an outer annular wall and an inner annular wall relative to each other, the diameter of the outer annular wall is larger than the diameter of the inner annular wall, the inner annular wall extends in a direction close to the top wall, and a first clamping space is formed on the side of the inner annular wall facing away from the outer annular wall, and part of the structure of the microphone is clamped in the first clamping space.

[0010] Optionally, a control panel is embedded on the peripheral wall portion;

[0011] The groove wall of the annular groove includes an outer annular wall and an inner annular wall relative to each other, the diameter of the outer annular wall is larger than the diameter of the inner annular wall, the outer annular wall extends in a direction close to the top end wall, a second clamping space is formed between the outer annular wall and the peripheral wall portion, and the peripheral edge portion of the control panel is clamped in the second clamping space.

[0012] Optionally, a microphone is provided in the housing, and a control panel is embedded on the peripheral wall;

[0013] The groove wall of the annular groove comprises an outer annular wall and an inner annular wall opposite to each other, the diameter of the outer annular wall is larger than the diameter of the inner annular wall, the inner annular wall and the outer annular wall both extend in a direction close to the top end wall, a first clamping space is formed on a side of the inner annular wall facing away from the outer annular wall, a part of the structure of the microphone is clamped in the first clamping space, a second clamping space is formed between the outer annular wall and the peripheral wall portion, and the peripheral edge portion of the control panel is clamped in the second clamping space;

[0014] A sealing ring is further provided in the annular groove, a plurality of first via holes are penetrated through the inner annular wall, a plurality of first flexible blocks corresponding to the plurality of first via holes are provided on the sealing ring, and the first flexible blocks extend into the first clamping space through the corresponding first via holes to abut against the microphone;

[0015] The outer annular wall is penetrated by a plurality of second through holes, the sealing ring is provided with a plurality of second flexible blocks corresponding one to one with the plurality of second through holes, and the second flexible blocks extend into the second clamping space through the corresponding second through holes to press against the control panel.

[0016] Optionally, when the first connecting member is fixed in the annular groove, the end of the first connecting member is disposed against the sealing ring;

[0017] When the second connecting member is fixed in the annular groove, the end of the second connecting member is disposed against the sealing ring.

[0018] Under the limitations of existing technologies, when workers must be in a flammable gas environment, they will directly face the risk of inhaling flammable gases when using intercom terminals for communication. At the same time, speaking activities may cause flammable gases to mix with air, affecting the accuracy of monitoring results and even triggering explosions caused by static electricity. In this solution, the design of the first connector and the second connector provides an effective solution to this challenge. The optional assembly of these two connectors allows users to flexibly select a suitable intercom mode based on the specific conditions and needs of the site. When the concentration of flammable gases in the environment is high and the flammable gases need to be isolated to ensure communication safety, users can choose to install the first connector and communicate through the intercom pipe.

[0019] Specifically, after the first connecting piece is installed on the shell, the user speaks to the pickup hole through the opening at the end of the intercom pipe away from the first connecting piece. This design cleverly utilizes the length and structure of the intercom pipe to effectively isolate the user from the flammable gases in the external environment. This not only reduces the risk of inhaling flammable gases during communication, but also reduces the mixing of flammable gases and air that may be caused by speaking activities, thereby maintaining the stability of the flammable gas concentration in the environment, ensuring the accuracy of the monitoring results, and reducing the potential risk of explosion due to electrostatic discharge.

[0020] In addition, the hard material construction of the first connecting piece and the second connecting piece and their close fit with the shell further enhance the overall explosion-proof capability of the explosion-proof terminal and ensure safe use under extreme conditions. This design not only improves the practicality and reliability of the intercom terminal, but also meets the high standards for equipment safety performance in flammable and explosive working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an embodiment of a dual-mode intercom explosion-proof terminal for combustible gas monitoring of the utility model;

[0023] Figure 2This is a structural schematic diagram of another embodiment of the dual-mode intercom explosion-proof terminal for combustible gas monitoring of the utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure after omitting the second connecting member;

[0025] Figure 4 for Figure 3 Schematic cross-sectional view of ;

[0026] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0027] Description of Figure Numbers:

[0028] 1. Terminal body; 11. Shell; 111. Peripheral wall; 112. Top wall; 113. Bottom wall; 12. Sound pickup hole; 13. Mounting portion; 131. Annular groove; 131a. Inner annular wall; 131b. Outer annular wall; 14. Control panel; 15. Sealing ring; 151. First flexible block; 152. Second flexible block; 16. Microphone; 2. Intercom assembly; 21. First connecting piece; 22. Second connecting piece; 23. Intercom pipe.

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, which must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] The utility model provides a dual-mode intercom explosion-proof terminal for monitoring combustible gas.

[0034] In the embodiment of the present utility model, Figures 1 to 5 As shown, the dual-mode intercom explosion-proof terminal for combustible gas monitoring includes a terminal body 1 and an intercom component 2, the terminal body 1 includes a shell 11, the shell 11 is provided with a sound pickup hole 12, the shell 11 is also provided with a mounting portion 13, the mounting portion 13 is arranged in a ring shape surrounding the sound pickup hole 12; the intercom component 2 includes a first connecting member 21, a second connecting member 22 and an intercom pipe 23, the first connecting member 21 and the second connecting member 22 are both arranged in a ring shape, and the material of the first connecting member 21 and the material of the second connecting member 22 are both hard materials, the first connecting member 21 is installed at one end of the intercom pipe 23, and the first connecting member 21 and the second connecting member 22 can be selectively installed on the mounting portion 13.

[0035] It is not difficult to understand that, within the limitations of existing technologies, when workers must be in a flammable gas environment, they will directly face the risk of inhaling flammable gases when using intercom terminals for communication. At the same time, speaking activities may cause flammable gases to mix with air, affecting the accuracy of monitoring results, and even triggering explosions caused by static electricity. In this solution, the design of the first connector 21 and the second connector 22 provides an effective solution to this challenge. The optional assembly of these two connectors allows the user to flexibly select a suitable intercom mode according to the specific conditions and needs of the site. When the concentration of flammable gases in the environment is high and the flammable gases need to be isolated to ensure communication safety, the user can choose to install the first connector 21 and communicate through the intercom pipe 23.

[0036] Specifically, after the first connecting piece 21 is installed on the shell 11, the user speaks to the pickup hole 12 through the opening of the end of the intercom pipe 23 away from the first connecting piece 21. This design cleverly utilizes the length and structure of the intercom pipe 23 to effectively isolate the user from the combustible gas in the external environment. This not only reduces the risk of inhaling combustible gas during communication, but also reduces the mixing of combustible gas and air that may be caused by speaking activities, thereby maintaining the stability of the combustible gas concentration in the environment, ensuring the accuracy of the monitoring results, and reducing the potential risk of explosion due to electrostatic discharge.

[0037] In addition, the hard material construction of the first connecting member 21 and the second connecting member 22 and the close fit with the housing 11 further enhance the overall explosion-proof capability of the explosion-proof terminal and ensure safe use under extreme conditions. This design not only improves the practicality and reliability of the intercom terminal, but also meets the high standards for equipment safety performance in flammable and explosive working environments.

[0038] In specific implementation, the material of the first connecting member 21 and the material of the second connecting member 22 can be metal (such as stainless steel, aluminum alloy), ceramic, hard plastic (such as polycarbonate PC), and high-performance composite materials such as silicon carbide and tungsten carbide.

[0039] Optionally, the housing 11 includes a peripheral wall portion 111 and a top end wall 112 and a bottom end wall 113 respectively disposed at opposite ends of the peripheral wall portion 111;

[0040] The sound pickup hole 12 is formed on the bottom wall 113 , and the mounting portion 13 is an annular groove 131 formed on the bottom wall 113 . The first connecting member 21 and the second connecting member 22 can be inserted into the annular groove 131 , respectively.

[0041] The annular groove 131, as a structure recessed into the bottom end wall 113 of the terminal body 1, provides a physical space for accommodating and fixing the connector. Compared with traditional point contact or line contact, the design of the annular groove 131 allows the connector to contact the terminal body 1 over a larger surface area. The advantage of this contact method is that it can more evenly disperse the pressure generated by external forces (such as insertion, extraction, collision, etc.), avoiding local damage or deformation caused by excessive pressure concentration.

[0042] The increased contact area not only improves the stability of the physical connection and reduces the possibility of loose connection due to vibration or impact, but also improves the strength and rigidity of the overall structure through a tighter joint. This structural reinforcement effect is crucial for explosion-proof terminals because it enhances the overall durability and explosion-proof capability of the equipment, ensuring that sensitive components inside the terminal can be better protected when facing possible explosive gas environments, reducing safety risks.

[0043] Optionally, a microphone 16 is provided in the housing 11;

[0044] The groove wall of the annular groove 131 includes an outer annular wall 131b and an inner annular wall 131a relative to each other, the diameter of the outer annular wall 131b is larger than the diameter of the inner annular wall 131a, the inner annular wall 131a extends in a direction close to the top wall 112, and a first clamping space is formed on the side of the inner annular wall 131a facing away from the outer annular wall 131b, and part of the structure of the microphone 16 is clamped in the first clamping space.

[0045] The design of the inner annular wall 131a not only serves as the groove wall of part of the annular groove 131, but also provides a snap-on and fixation function for the microphone 16 inside the shell 11. This dual-function structural innovation realizes two key functions in the same component, greatly improving the structural compactness and functional integration of the device, cleverly utilizing space, and reducing the need for additional fixing brackets or buckles, thereby reducing the overall weight and manufacturing cost of the device.

[0046] Optionally, a control panel 14 is embedded on the peripheral wall portion 111;

[0047] The groove wall of the annular groove 131 includes an outer annular wall 131b and an inner annular wall 131a relative to each other, the diameter of the outer annular wall 131b is larger than the diameter of the inner annular wall 131a, the outer annular wall 131b extends in a direction close to the top end wall 112, and a second clamping space is formed between the outer annular wall 131b and the peripheral wall portion 111, and the peripheral portion of the control panel 14 is clamped in the second clamping space.

[0048] The second snap-in space formed by the cooperation between the outer annular wall 131b and the peripheral wall portion 111 allows the peripheral portion of the control panel 14 to be stably snap-in therein. Such a structural arrangement ensures that the control panel 14 is firmly fixed, prevents shaking or falling off during use, and improves the durability of the device.

[0049] Optionally, a microphone 16 is disposed in the housing 11 , and a control panel 14 is embedded on the peripheral wall portion 111 ;

[0050] The groove wall of the annular groove 131 includes an outer annular wall 131b and an inner annular wall 131a opposite to each other, the diameter of the outer annular wall 131b is larger than the diameter of the inner annular wall 131a, the inner annular wall 131a and the outer annular wall 131b both extend in a direction close to the top end wall 112, a first clamping space is formed on the side of the inner annular wall 131a facing away from the outer annular wall 131b, a part of the structure of the microphone 16 is clamped in the first clamping space, a second clamping space is formed between the outer annular wall 131b and the peripheral wall portion 111, and the peripheral edge of the control panel 14 is clamped in the second clamping space;

[0051] A sealing ring 15 is further provided in the annular groove 131, and a plurality of first through holes are penetrated through the inner annular wall 131a. A plurality of first flexible blocks 151 corresponding to the plurality of first through holes are provided on the sealing ring 15. The first flexible blocks 151 extend into the first clamping space through the corresponding first through holes to abut against the microphone 16.

[0052] The outer annular wall 131b is penetrated by a plurality of second through holes, and the sealing ring 15 is provided with a plurality of second flexible blocks 152 corresponding to the plurality of second through holes one by one. The second flexible blocks 152 extend into the second clamping space through the corresponding second through holes to press against the control panel 14 .

[0053] It is not difficult to understand that, in the absence of a sealing ring 15, the microphone 16 will directly contact the hard inner annular wall 131a, and similarly, the control panel 14 will also directly contact the hard outer annular wall 131b. This hard-to-hard contact is likely to cause surface wear of the microphone 16 and the control panel 14 during long-term use, especially in working environments where the equipment is often subjected to vibration or impact, and may even damage the fine structure of these components, affecting the normal function and service life of the equipment. In addition, hard contact points are prone to produce tiny gaps under the action of mechanical stress, which will not only affect the sealing performance of the equipment, but may also become a potential risk point for the penetration and accumulation of combustible gases, increasing the risk of equipment use.

[0054] These problems can be effectively avoided by arranging a sealing ring 15 made of a flexible material (such as rubber or silicone) in the annular groove 131. The sealing ring 15 not only acts as a buffer layer between the microphone 16 and the control panel 14 and the hard wall surface, reducing the wear caused by direct hard contact and protecting the integrity of key components of the device, but also the softness and elasticity of the sealing ring 15 can absorb and disperse external impact forces and reduce damage to internal components. At the same time, the flexible sealing ring 15 also provides a better sealing effect, preventing harmful substances such as dust, moisture and combustible gas from penetrating into the interior of the device, ensuring the long-term stable operation and safe use of the device.

[0055] Optionally, when the first connecting member 21 is fixed in the annular groove 131, the end of the first connecting member 21 is disposed against the sealing ring 15;

[0056] When the second connecting member 22 is fixed in the annular groove 131 , the end of the second connecting member 22 is disposed against the sealing ring 15 .

[0057] When the first or second connecting member 22 is installed into the annular groove 131 and contacts the sealing ring 15 , the flexible material (such as rubber or silicone) of the sealing ring 15 acts as a buffer, which can absorb the impact force that may be generated during the installation process and reduce mechanical damage to the connecting member and the inner wall of the annular groove 131 .

[0058] At the same time, the sealing ring 15 forms a tight contact state with the end of the connector after installation, further enhancing the sealing performance of the device. This seal not only effectively prevents the entry of potentially harmful substances such as external flammable gas, moisture and dust, and reduces the environmental impact on internal electronic components, but also reduces the potential safety risks caused by the exchange between the internal and external environments of the device, such as the explosion hazard caused by the penetration of flammable gas.

[0059] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dual-mode intercom explosion-proof terminal for combustible gas monitoring, characterized in that: include: The terminal body (1) comprises a shell (11), the shell (11) is provided with a sound pickup hole (12), the shell (11) is also provided with a mounting portion (13), and the mounting portion (13) is arranged in a ring shape surrounding the sound pickup hole (12); The intercom assembly (2) comprises a first connecting piece (21), a second connecting piece (22) and an intercom pipe (23); the first connecting piece (21) and the second connecting piece (22) are both arranged in a ring shape, and the material of the first connecting piece (21) and the material of the second connecting piece (22) are both hard materials; the first connecting piece (21) is installed at one end of the intercom pipe (23); the first connecting piece (21) and the second connecting piece (22) can be selectively installed on the installation portion (13).

2. The dual-mode intercom explosion-proof terminal for combustible gas monitoring according to claim 1, characterized in that: The housing (11) comprises a peripheral wall portion (111) and a top end wall (112) and a bottom end wall (113) respectively arranged at opposite ends of the peripheral wall portion (111); The sound pickup hole (12) is formed on the bottom end wall (113); the mounting portion (13) is an annular groove (131) formed on the bottom end wall (113); the first connecting member (21) and the second connecting member (22) can be respectively inserted into the annular groove (131).

3. The dual-mode intercom explosion-proof terminal for combustible gas monitoring as claimed in claim 2, characterized in that: A microphone (16) is provided in the housing (11); The groove wall of the annular groove (131) includes an outer annular wall (131b) and an inner annular wall (131a) relative to each other, the diameter of the outer annular wall (131b) is larger than the diameter of the inner annular wall (131a), the inner annular wall (131a) extends in a direction close to the top wall (112), and a first clamping space is formed on the side of the inner annular wall (131a) facing away from the outer annular wall (131b), and a part of the structure of the microphone (16) is clamped in the first clamping space.

4. The dual-mode intercom explosion-proof terminal for combustible gas monitoring according to claim 2, characterized in that: A control panel (14) is embedded on the peripheral wall portion (111); The groove wall of the annular groove (131) comprises an outer annular wall (131b) and an inner annular wall (131a) opposite to each other, the diameter of the outer annular wall (131b) being larger than the diameter of the inner annular wall (131a), the outer annular wall (131b) extending in a direction close to the top end wall (112), a second clamping space being formed between the outer annular wall (131b) and the peripheral wall portion (111), and the peripheral edge portion of the control panel (14) being clamped in the second clamping space.

5. The dual-mode intercom explosion-proof terminal for combustible gas monitoring according to claim 2, characterized in that: A microphone (16) is provided in the housing (11), and a control panel (14) is embedded on the peripheral wall portion (111); The groove wall of the annular groove (131) comprises an outer annular wall (131b) and an inner annular wall (131a) opposite to each other, the diameter of the outer annular wall (131b) is larger than the diameter of the inner annular wall (131a), the inner annular wall (131a) and the outer annular wall (131b) both extend in a direction close to the top end wall (112), a first clamping space is formed on a side of the inner annular wall (131a) facing away from the outer annular wall (131b), a part of the structure of the microphone (16) is clamped in the first clamping space, a second clamping space is formed between the outer annular wall (131b) and the peripheral wall portion (111), and the peripheral edge portion of the control panel (14) is clamped in the second clamping space; A sealing ring (15) is also provided in the annular groove (131); a plurality of first through holes are penetrated through the inner annular wall (131a); a plurality of first flexible blocks (151) corresponding to the plurality of first through holes are provided on the sealing ring (15); the first flexible blocks (151) extend into the first clamping space through the corresponding first through holes to abut against the microphone (16); The outer annular wall (131b) is penetrated by a plurality of second through holes, and the sealing ring (15) is provided with a plurality of second flexible blocks (152) corresponding one-to-one to the plurality of second through holes, and the second flexible blocks (152) extend into the second clamping space through the corresponding second through holes to abut against the control panel (14).

6. The dual-mode intercom explosion-proof terminal for combustible gas monitoring as claimed in claim 5, characterized in that: When the first connecting member (21) is fixed in the annular groove (131), the end of the first connecting member (21) is disposed against the sealing ring (15); When the second connecting member (22) is fixed in the annular groove (131), the end of the second connecting member (22) is disposed against the sealing ring (15).

Images