Combustible gas detector probe and detector

Abstract

The utility model relates to the technical field of measuring equipment, in particular to a combustible gas detector detection head and a detector, and the combustible gas detector detection head comprises a gas detection assembly, a transparent plate, a detection head shell, an end cover and a soft rubber protective sleeve; a cavity is formed in the detection head shell, and the gas detection assembly is fixed in the inner cavity of the detection head shell; an open hole is formed in the end cover, the end cover is connected to the first end face of the detection head shell, a transparent plate fixing groove is formed between the end cover and the first end face of the detection head shell, the transparent plate is fixed in the transparent plate fixing groove, and the transparent plate corresponds to the open hole in position; a first via hole is formed in the middle of the transparent plate, the gas detection assembly penetrates through the first via hole, and the first end face of the gas detection assembly is flush with the first surface plane of the transparent plate; and the soft rubber protective sleeve is coated on the surfaces of the detection head shell and the end cover. According to the detection head, the durability of a detector can be ensured, and effective circulation and timely discharge of a gas sample in the detection head are not hindered.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a detection head of a combustible gas detector and a detector. Background Art

[0002] In the fields of industrial safety, environmental protection and daily life, the detection of combustible gas leaks is extremely important, because the improper accumulation of combustible gas can easily cause fires or even explosions, posing a serious threat to personnel safety and property. Therefore, as a key safety monitoring equipment, combustible gas detectors are widely used in many scenarios such as petrochemicals, gas supply, mining, indoor air quality monitoring, etc.

[0003] In the design of traditional combustible gas detectors, in order to ensure that the built-in high-sensitivity sensors and complex electronic circuits are not damaged by physical impact, the detection head is usually filled with buffer materials such as foam for protection. Although this design has alleviated the problem of instrument damage caused by accidental collisions to a certain extent, it has introduced new technical challenges. In particular, due to the compact space structure inside the detection head, the use of foam materials not only occupies valuable space, but may also hinder the effective circulation and timely discharge of gas samples. The residual gas sample will not only affect the accuracy of subsequent detection, but may also cause the sensor to respond slowly or cause false alarms, reducing the overall performance and reliability of the detector.

[0004] Therefore, there is an urgent need for a detection head that can ensure the durability of the detector while not hindering the effective circulation and timely discharge of the gas sample inside the detection head. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a combustible gas detector detection head and a detector.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] In a first aspect, an embodiment of the utility model provides a combustible gas detector detection head, comprising:

[0010] Gas detection components, transparent plates, detection head housings, end caps, and soft rubber protective covers;

[0011] Wherein, a cavity is arranged inside the shell of the detection head, and the gas detection component is fixed in the inner cavity of the shell of the detection head;

[0012] An opening is formed on the end cover, the end cover is connected to the first end surface of the detection head housing, a transparent plate fixing groove is formed between the end cover and the first end surface of the detection head housing, the transparent plate is fixed in the transparent plate fixing groove, and the transparent plate corresponds to the position of the opening on the end cover;

[0013] A first through hole is provided in the middle of the transparent plate, the gas detection component passes through the first through hole, and the first end surface of the gas detection component is flush with the first surface of the transparent plate;

[0014] The soft rubber protective cover is coated on the side surfaces of the detection head housing and the end cover.

[0015] Optionally, the soft rubber protective cover is a nitrile rubber protective cover.

[0016] Optionally, the gas detection assembly includes a gas sensor, a first circuit board, and a second circuit board;

[0017] Wherein, the gas sensor passes through the first via hole, and the first end surface of the gas sensor is flush with the first surface plane of the transparent plate;

[0018] The first circuit board is connected to the second end surface of the gas sensor, and the first end surface of the gas sensor is opposite to the second end surface;

[0019] A second via hole is arranged in the middle of the second circuit board, and the gas sensor passes through the second via hole. The second circuit board is located between the first circuit board and the transparent plate.

[0020] Optionally, the first circuit board and the second circuit board are electrically connected to each other via pins.

[0021] Optionally, it further comprises a first fixing ring and a second fixing ring mounted on the inner wall of the detection head housing.

[0022] The second circuit board is sandwiched between the first fixing ring and the second fixing ring;

[0023] An LED lamp is arranged on the second circuit board.

[0024] Optionally, a fixing ring placement step is provided on the inner wall of the detection head housing.

[0025] Optionally, the end cap is threadably connected or snap-fitted to the detection head housing.

[0026] Optionally, a through hole is provided on the outer shell of the detection head, and an opening corresponding to the through hole on the outer shell of the detection head is provided on the soft rubber protective cover.

[0027] In a second aspect, an embodiment of the utility model provides a detector, comprising the combustible gas detector detection head described in the first aspect above.

[0028] (III) Beneficial effects

[0029] The utility model is a combustible gas detector detection head and detector, which adopts the design of setting a soft rubber protective cover on the outside of the detection head instead of the traditional internal foam filling method, effectively solving the problems of poor gas circulation and residual in the original design. This design not only significantly increases the cavity space inside the detection head, improves the gas circulation efficiency, ensures the rapid dissipation of gas, and reduces detection errors, but also the use of the soft rubber protective cover greatly enhances the impact resistance of the equipment and prolongs its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a cross-sectional view of the detection head of the combustible gas detector in the first embodiment of the utility model;

[0031] Figure 2 This is a three-dimensional view of the detection head of the combustible gas detector in the first embodiment of the utility model;

[0032] Figure 3 This is an explosion diagram of the detection head of the combustible gas detector in Example 1 of the present utility model.

[0033] [Description of Reference Numerals]

[0034] 1: Gas detection component;

[0035] 11: gas sensor, 12: first circuit board, 13: second circuit board, 14: pin, 15: LED light;

[0036] 2: Transparent plate;

[0037] 3: Detection head housing;

[0038] 4: End cap;

[0039] 5: Soft rubber protective cover;

[0040] 6: first fixing ring;

[0041] 7: second fixing ring;

[0042] 8: The fixing ring is placed on the step. DETAILED DESCRIPTION

[0043] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0044] Embodiment 1

[0045] like Figure 1-Figure 3 As shown, this embodiment provides a combustible gas detector detection head, including a gas detection component 1, a transparent plate 2, a detection head housing 3, an end cover 4, and a soft rubber protective cover 5.

[0046] The transparent plate 2 is fixed in a fixing groove between the detection head housing 3 and the end cover 4, and the first through hole opened on the transparent plate is aligned with the opening of the end cover, so as to facilitate direct contact of the gas sample.

[0047] The soft rubber protective cover 5 is made of soft rubber material (such as nitrile rubber), and tightly wraps the side edges of the detection head housing 3 and the end cover 4, effectively preventing collision without hindering gas circulation.

[0048] The gas detection assembly 1 includes a gas sensor 11, a first circuit board 12 and a second circuit board 13. The lower end of the gas sensor 11 is connected to the first circuit board 12, and the upper end passes through the first via hole set in the center of the transparent plate 2. Its upper end surface is flush with the upper surface of the transparent plate 2, ensuring the smooth flow of the airflow channel. The first circuit board 12 and the second circuit board 13 are electrically connected through the pin 14 to ensure the stable transmission of the signal. A second via hole is set in the middle of the second circuit board 13, and the gas sensor 11 also passes through this via hole. In addition, one or more LED lights 15 are installed on the second circuit board 13 to indicate the working status or alarm.

[0049] The inner wall of the detection head housing 3 is provided with a fixing ring placement step 8, and the first fixing ring 6 and the second fixing ring 7 are respectively fixed to the upper and lower edges of the second circuit board 13, and the position is stabilized by the fixing ring placement step 8. The end cover 4 is threadedly connected to the detection head housing 3 to ensure sealing and stability. In addition, a through hole is provided on one side of the detection head housing 3, which cooperates with the corresponding opening on the soft rubber protective cover 5 to facilitate airflow in and out.

[0050] Embodiment 2

[0051] This embodiment provides a detector, which includes the detection head described in the first embodiment. The detection head is connected to the central processing unit through a data cable. The detection head is used to obtain external gas concentration data and transmit it to the central processing unit.

[0052] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A combustible gas detector detection head, characterized in that: include: Gas detection component (1), transparent plate (2), detection head housing (3), end cover (4), soft rubber protective cover (5); The detection head housing (3) is provided with a cavity inside, and the gas detection component (1) is fixed in the inner cavity of the detection head housing (3); An opening is formed on the end cover (4), the end cover (4) is connected to the first end surface of the detection head housing (3), a transparent plate fixing groove is formed between the end cover (4) and the first end surface of the detection head housing (3), the transparent plate (2) is fixed in the transparent plate fixing groove, and the transparent plate (2) corresponds to the position of the opening on the end cover (4); A first through hole is provided in the middle of the transparent plate (2), the gas detection component (1) passes through the first through hole, and the first end surface of the gas detection component (1) is flush with the first surface of the transparent plate (2); The soft rubber protective cover (5) is coated on the surface of the detection head housing (3) and the end cover (4).

2. The combustible gas detector probe according to claim 1, characterized in that: The soft rubber protective cover (5) is a nitrile rubber protective cover.

3. The combustible gas detector probe according to claim 1, characterized in that: The gas detection component (1) comprises a gas sensor (11), a first circuit board (12) and a second circuit board (13); The gas sensor (11) passes through the first through hole, and the first end surface of the gas sensor (11) is flush with the first surface of the transparent plate (2); The first circuit board (12) is connected to the second end surface of the gas sensor (11), and the first end surface of the gas sensor (11) is opposite to the second end surface; A second via hole is provided in the middle of the second circuit board (13), and the gas sensor (11) passes through the second via hole. The second circuit board (13) is located between the first circuit board (12) and the transparent plate (2).

4. The combustible gas detector probe according to claim 3 is characterized in that: The first circuit board (12) and the second circuit board (13) are electrically connected to each other via the plug pins (14).

5. The combustible gas detector probe according to claim 3 is characterized in that: It also includes a first fixing ring (6) and a second fixing ring (7) mounted on the inner wall of the detection head housing (3), The second circuit board (13) is sandwiched between the first fixing ring (6) and the second fixing ring (7); An LED lamp (15) is arranged on the second circuit board (13).

6. The combustible gas detector probe according to claim 5, characterized in that: A fixing ring placement step (8) is provided on the inner wall of the detection head housing (3), and the first fixing ring (6) and the second fixing ring (7) are placed on the fixing ring placement step (8).

7. The combustible gas detector probe according to claim 1, characterized in that: The end cover (4) is threadedly connected or snap-fittedly connected to the detection head housing (3).

8. The combustible gas detector probe according to claim 1, characterized in that: A through hole is provided on the detection head shell (3), and an opening corresponding to the through hole on the detection head shell (3) is provided on the soft rubber protective cover (5).

9. A detector, characterized in that: It includes the combustible gas detector detection head as described in any one of claims 1-8.

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