Explosion-proof combustible gas detector

Abstract

The utility model discloses an explosion-proof combustible gas detector, which comprises an explosion-proof detector body, a fixed seat, an alarm and a gas inlet pipe, the fixed seat is arranged at the bottom of the explosion-proof detector body, the alarm is arranged on one side of the explosion-proof detector body, and the gas inlet pipe is arranged on one side of the fixed seat. The explosion-proof detector comprises an explosion-proof detector body, two arc-shaped plates are arranged outside the explosion-proof detector body, two limiting rods are arranged at the top ends of the two arc-shaped plates, contact pads are arranged at one ends of the four limiting rods, and through arrangement of the limiting rods, the contact pads, a contact plate, a rotating rod, an extension block, a heat-resistant pipe and a clamping ring, the four contact pads are distributed on the two sides of the bottom of the contact plate respectively; the bottom face of the contact pad is made of sponge and is soft, the heat-resisting pipe is composed of foldable corrugated pieces and can be compressed to deform and extend after being stressed, and therefore the length between the air inlet pipe and the heat-resisting pipe can be adjusted, the combustible gas suction range is enlarged, and the practicability of the anti-explosion detector body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detectors, in particular to an explosion-proof combustible gas detector. Background Technique

[0002] A gas detector is an instrument for detecting gas concentration. This instrument is applicable to dangerous places where combustible or toxic gases exist. It can continuously detect the content of the measured gas in the air within the lower explosion limit for a long time. It can be widely used in various industries where combustible or toxic gases exist, such as gas, petrochemical, metallurgy, steel, coking, and electric power. High-performance catalytic combustion type and electro-chemical gas sensors are used as detection elements. The product has high sensitivity, rapid response time, and high explosion-proof grade.

[0003] The outer shell of the gas detector is set as an explosion-proof shell. It can receive and give an alarm prompt for the detected combustible gas signal through an alarm, which can achieve the explosion-proof effect. However, the gas detector often directly contacts the wall surface and is installed using bolts. After the bolts become loose, the part of the gas detector in contact with the wall surface will be worn. At the same time, the length of the pipeline for inhaling combustible gas cannot be adjusted. Therefore, the range of inhaling combustible gas is reduced. For this reason, it is particularly important to design an explosion-proof combustible gas detector. Content of the Utility Model

[0004] The purpose of the utility model is to provide an explosion-proof combustible gas detector to solve the problems proposed in the above background technique that after the bolts become loose, the part of the gas detector in contact with the wall surface will be worn, and at the same time, the length of the pipeline for inhaling combustible gas cannot be adjusted.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An explosion-proof combustible gas detector, including an explosion-proof detector body, a fixed seat, an alarm, and an air inlet pipe. The fixed seat is arranged at the bottom of the explosion-proof detector body. The alarm is arranged on one side of the explosion-proof detector body. The air inlet pipe is arranged on one side of the fixed seat. Two arc-shaped plates are arranged outside the explosion-proof detector body. Two limiting rods are arranged at the top ends of the two arc-shaped plates. Contact pads are arranged at one ends of the four limiting rods. A contact plate is arranged at the bottom of the fixed seat. An auxiliary groove is formed on the surface of one of the arc-shaped plates. A rotating rod is arranged inside the auxiliary groove. An extension block is sleeved at one end of the rotating rod. A pushing plate is arranged at the bottom end of the extension block. A heat-resistant pipe is inserted and connected to one side of the fixed seat.

[0006] As a preferred technical solution of the utility model, a clamping ring is fixedly installed at the bottom end of the pushing plate. One end of the heat-resistant pipe is in through connection with one sides of the explosion-proof detector body and the fixed seat. One end of the air inlet pipe is fixedly inserted and connected to one end of the heat-resistant pipe.

[0007] As a preferred technical solution of the present utility model, the clamping ring is fixedly sleeved on one end of the heat-resistant tube.

[0008] As a preferred technical solution of the present utility model, the extension block is threadedly sleeved on one end of the rotating rod, and a twisting block is rotatably installed on the front surface of one of the arc-shaped plates.

[0009] As a preferred technical solution of the present utility model, one end of the twisting block is fixedly connected to one end of the rotating rod.

[0010] As a preferred technical solution of the present utility model, the four limiting rods are respectively inserted through the surfaces of the fixed seat and the contact plate, and a plurality of positioning blocks are arranged on the outer wall of the fixed seat.

[0011] As a preferred technical solution of the present utility model, one sides of the plurality of positioning blocks are respectively fixedly connected to the outer wall of the fixed seat, and the positions where the plurality of positioning blocks are arranged are equally spaced.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For an explosion-proof combustible gas detector of the present utility model, by providing the limiting rods, contact pads, contact plate, rotating rod, extension block, heat-resistant tube and clamping ring, the four contact pads are respectively distributed on both sides of the bottom of the contact plate, and the bottom surface of the contact pad is made of sponge, which is relatively soft. The sponge part directly contacts the wall, avoiding the wear caused by the direct contact of one side of the fixed seat with the wall surface. The extension block can move back and forth at one end of the rotating rod, thereby driving the clamping ring to apply pressure to the outer surface of the heat-resistant tube. The heat-resistant tube is composed of foldable corrugated sheets, which will be compressed and deformed and extended when stressed, so as to adjust the length between the air inlet pipe and the heat-resistant tube, increasing the range of combustible gas inhalation and improving the practicability of the explosion-proof detector body.

[0014] 2. For an explosion-proof combustible gas detector of the present utility model, by providing the air inlet pipe, arc-shaped plate, push plate, twisting block and positioning block, the positioning block is fixed to the wall through bolts, so that the explosion-proof detector body can be installed on the wall. After the twisting block is rotated clockwise, the rotating rod can be driven to rotate synchronously. Since the outer surface of the extension block is tightly attached to the inner wall of the auxiliary groove, during the rotation of the rotating rod, the push plate will be driven to move back and forth, and thus the position of the clamping ring can be stably adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view structural schematic diagram of the present utility model;

[0016] Figure 2 is a side view structural schematic diagram of the present utility model;

[0017] Figure 3 is a partial front view structural schematic diagram of the present utility model;

[0018] Figure 4 is a partial side view sectional structural schematic diagram of the present utility model.

[0019] In the figure: 1, explosion-proof detector body; 2, fixing seat; 3, alarm; 4, contact plate; 5, arc plate; 6, limiting rod; 7, contact pad; 8, rotating rod; 9, extension block; 10, pushing plate; 11, clamping ring; 12, heat-resistant pipe; 13, intake pipe; 14, twisting block; 15, positioning block; 16, auxiliary groove. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution for an explosion-proof combustible gas detector:

[0022] Embodiment 1:

[0023] As Figures 1-3 shown, an explosion-proof combustible gas detector includes an explosion-proof detector body 1, a fixing seat 2, an alarm 3 and an intake pipe 13. The fixing seat 2 is arranged at the bottom of the explosion-proof detector body 1, the alarm 3 is arranged on one side of the explosion-proof detector body 1, the intake pipe 13 is arranged on one side of the fixing seat 2. Two arc plates 5 are arranged outside the explosion-proof detector body 1. Two limiting rods 6 are arranged at the top ends of the two arc plates 5. Contact pads 7 are arranged at one ends of the four limiting rods 6. A contact plate 4 is arranged at the bottom of the fixing seat 2. An auxiliary groove 16 is formed on the surface of one of the arc plates 5. A rotating rod 8 is arranged inside the auxiliary groove 16. An extension block 9 is sleeved at one end of the rotating rod 8. A pushing plate 10 is arranged at the bottom end of the extension block 9. A heat-resistant pipe 12 is inserted and connected to one side of the fixing seat 2. The extension block 9 can move back and forth at one end of the rotating rod 8, thereby driving the clamping ring 11 to apply pressure to the outer surface of the heat-resistant pipe 12. The heat-resistant pipe 12 is composed of foldable corrugated sheets and will be compressed and deformed and extended when stressed, so as to adjust the length between the intake pipe 13 and the heat-resistant pipe 12.

[0024] Embodiment 2:

[0025] On the basis of Embodiment 1, as Figure 1 andFigure 4 As shown, the extension block 9 is threadedly sleeved on one end of the rotating rod 8. A twisting block 14 is rotatably installed on the front surface of one of the arc-shaped plates 5. Four limiting rods 6 are respectively inserted through the surfaces of the fixed seat 2 and the contact plate 4. A plurality of positioning blocks 15 are arranged on the outer wall of the fixed seat 2. For an explosion-proof combustible gas detector of the present utility model, by providing an air inlet pipe 13, arc-shaped plates 5, a pushing plate 10, a twisting block 14 and positioning blocks 15, the positioning blocks 15 are fixed to the wall surface by bolts, so that the explosion-proof detector body 1 can be installed on the wall surface. After the twisting block 14 is rotated clockwise, the rotating rod 8 can be driven to rotate synchronously.

[0026] Working principle: The explosion-proof detector body 1 is an instrument for detecting gas concentration. This instrument is applicable to dangerous places where combustible and toxic gases exist, and can continuously detect the content of the measured gas in the air within the lower explosion limit for a long time. The explosion-proof detector body 1 is wrapped by an explosion-proof housing with a high explosion-proof grade. When the explosion-proof detector body 1 needs to be installed on the wall surface where combustible gas needs to be detected, first, one side of the contact plate 4 is in contact with the wall surface, and a plurality of positioning blocks 15 are in contact with the wall surface. The positioning blocks 15 are fixed to the wall surface by bolts, so that the explosion-proof detector body 1 can be installed on the wall surface. Four contact pads 7 are respectively distributed on both sides of the bottom of the contact plate 4, and the bottom surface of the contact pad 7 is made of sponge, which is relatively soft. The sponge part is directly in contact with the wall, avoiding the direct contact between one side of the fixed seat 2 and the wall surface and being worn, extending the service life of the fixed seat 2 and the explosion-proof detector body 1, and also reducing the number of times of maintenance of the fixed seat 2 and the explosion-proof detector body 1 by the staff. The extension block 9 can move back and forth at one end of the rotating rod 8, so as to drive the clamping ring 11 to apply pressure to the outer surface of the heat-resistant tube 12. The heat-resistant tube 12 is composed of foldable corrugated sheets, which will be compressed and deformed and extended when stressed, so that the length between the air inlet pipe 13 and the heat-resistant tube 12 can be adjusted, increasing the range of inhalation of combustible gas and improving the practicability of the explosion-proof detector body 1. One end of the heat-resistant tube 12 is mutually communicated with the fixed seat 2 and one side of the explosion-proof detector body 1, that is, the inhaled combustible gas will be transmitted to the inside of the explosion-proof detector body 1 through the air inlet pipe 13 and the heat-resistant tube 12. The explosion-proof detector body 1 is electrically connected to the alarm 3. After the combustible gas is detected by the explosion-proof detector body 1, a signal is transmitted to the alarm 3, so as to drive the alarm 3 to work and achieve the alarm effect. After the twisting block 14 is rotated clockwise manually, the rotating rod 8 can be driven to rotate synchronously. Since the outer surface of the extension block 9 is tightly attached to the inner wall of the auxiliary groove 16, during the rotation of the rotating rod 8, the pushing plate 10 will be driven to move back and forth, and the position of the clamping ring 11 can be stably adjusted.

[0027] In the description of the present utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0028] In the present utility model, unless otherwise clearly specified and defined, for example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof combustible gas detector, comprising an explosion-proof detector body (1), a fixing seat (2), an alarm (3) and an air inlet pipe (13). The fixing seat (2) is arranged at the bottom of the explosion-proof detector body (1), the alarm (3) is arranged on one side of the explosion-proof detector body (1), and the air inlet pipe (13) is arranged on one side of the fixing seat (2), and is characterized in that: Two arc-shaped plates (5) are arranged outside the explosion-proof detector body (1). Two limit rods (6) are arranged at the top ends of the two arc-shaped plates (5). Contact pads (7) are arranged at one ends of the four limit rods (6). A contact plate (4) is arranged at the bottom of the fixed seat (2). An auxiliary groove (16) is formed on the surface of one of the arc-shaped plates (5). A rotating rod (8) is arranged inside the auxiliary groove (16). An extension block (9) is sleeved at one end of the rotating rod (8). A push plate (10) is arranged at the bottom end of the extension block (9). A heat-resistant pipe (12) is inserted and connected to one side of the fixed seat (2).

2. An explosion-proof combustible gas detector according to claim 1, characterized in that: A clamping ring (11) is fixedly installed at the bottom end of the push plate (10). One end of the heat-resistant pipe (12) communicates with one side of the explosion-proof detector body (1) and the fixed seat (2). One end of the air inlet pipe (13) is fixedly inserted and connected to one end of the heat-resistant pipe (12).

3. An explosion-proof combustible gas detector according to claim 2, characterized in that: The clamping ring (11) is fixedly sleeved at one end of the heat-resistant pipe (12).

4. An explosion-proof combustible gas detector according to claim 1, characterized in that: The extension block (9) is threadedly sleeved at one end of the rotating rod (8). A twisting block (14) is rotatably installed on the front surface of one of the arc-shaped plates (5).

5. An explosion-proof combustible gas detector according to claim 4, characterized in that: One end of the twisting block (14) is fixedly connected to one end of the rotating rod (8).

6. An explosion-proof combustible gas detector according to claim 1, characterized in that: The four limit rods (6) are respectively inserted and connected to the surfaces of the fixed seat (2) and the contact plate (4). A number of positioning blocks (15) are arranged on the outer wall of the fixed seat (2).

7. An explosion-proof combustible gas detector according to claim 6, characterized in that: One sides of the number of positioning blocks (15) are respectively fixedly connected to the outer wall of the fixed seat (2). The positions where the number of positioning blocks (15) are arranged are equally spaced.

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