Miniaturized hydrazine gas electrochemical sensor

Abstract

The utility model discloses a miniaturized hydrazine gas electrochemical sensor, which comprises a body part, a gas sensor, a gas sensor, a gas sensor, a gas sensor, a gas sensor and a gas sensor, and is characterized in that the body part comprises a sensor shell and a top cover; the filtering part comprises an air inlet hole, a filtering cavity, a filtering disc, filtering holes, a rotating rod, a limiting disc and a movable rod; the filtering cavity is located in the sensor shell, the filtering disc is located in the filtering cavity, filtering holes are formed in the inner circumference of the filtering disc at equal intervals, a rotating rod is connected to the middle of the top end of the filtering disc, and movable rods are symmetrically connected to the outer surface of the rotating rod. The problems that when an existing miniaturized hydrazine gas electrochemical sensor is actually used, a single filtering structure is usually adopted for filtering particles entering the sensor, more particles are left and accumulated in the sensor along with continuous increase of filtering time, and when the sensor operates again, the size of the sensor is too large are solved. And the problem that the gas cannot be continuously transmitted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a small-sized hydrazine gas electrochemical sensor. Background Art

[0002] The sensor is the core part of the electrochemical sensor, usually made of precious metals such as platinum or gold, which can catalyze the reaction between hydrazine and the electrode. When hydrazine gas enters the sensor through the gas permeable membrane and contacts the sensing electrode, an electrochemical reaction occurs, generating an electrical signal proportional to the hydrazine concentration. The generated electrical signal is amplified and processed and converted into readable data for displaying and recording the concentration of hydrazine.

[0003] In actual use, existing miniaturized hydrazine gas electrochemical sensors usually use a single filtering structure to filter particles that enter the interior. As the filtering time continues to increase, more particles will remain and accumulate inside the sensor. If the particles are not cleaned in time, when the sensor operates again, the gas cannot continue to be transmitted. Utility Model Content

[0004] The purpose of the utility model is to provide a miniaturized hydrazine gas electrochemical sensor to solve the problem raised in the above-mentioned background technology that the existing miniaturized hydrazine gas electrochemical sensor usually adopts a single filtering structure to filter the particles entering the interior during actual use, and as the filtering time continues to increase, more particles will remain and accumulate inside the sensor. If the particles are not cleaned in time, when the sensor is operated again, the gas cannot be transmitted any further.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a miniaturized hydrazine gas electrochemical sensor, comprising:

[0007] A body component, the body component comprising a sensor housing and a top cover;

[0008] A filter component, the filter component comprising an air inlet, a filter cavity, a filter plate, a filter hole, a rotating rod, a limit plate and a movable rod;

[0009] The filter cavity is located inside the sensor housing, the filter disc is located inside the filter cavity, filter holes are evenly spaced on the inner circumference of the filter disc, the middle of the top of the filter disc is connected to the rotating rod, and the outer surface of the rotating rod is symmetrically connected to the movable rod.

[0010] Furthermore, the top of the top cover is symmetrically connected to the air inlet hole, and the top of the rotating rod is connected to the limiting plate.

[0011] Furthermore, it also includes a moving part, which includes an inner cavity, a damping rod, a limiting ring, a damping seat and a limiting block;

[0012] The inner wall of the filter cavity is symmetrically provided with an inner cavity, the middle of the inner cavity is connected to a damping rod, the damping seat is connected to the outside of the damping rod, the damping seat is symmetrically connected to the outer surface of the limiting ring, the filter disc is located inside the limiting ring, and the bottom of the damping rod is connected to a limiting block.

[0013] Furthermore, the main body component also includes a support seat and pins;

[0014] The top cover is connected to the top of the sensor housing, the support base is connected to the bottom of the sensor housing, and the pins are evenly connected to the bottom of the support base.

[0015] Furthermore, it also includes a sealing component, which includes a support ring, a sealing gasket, an inner groove, a pull rod, a spring and a clamp ring;

[0016] The support ring is connected to the top of the sensor housing, an inner groove is provided inside the support ring, a spring is evenly connected inside the inner groove, a clamp ring is connected outside the spring, one end of the clamp ring is symmetrically connected to a pull rod, and the pull rod passes through the tube support ring.

[0017] Furthermore, the sealing gasket is bonded to the inner surface and the outer surface of the top cover, and the clamping ring is clamped on the outer wall of the sealing gasket.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The utility model is provided with a filter cavity, and a filter disk is provided inside the filter cavity. When external gases enter the interior of the sensor housing, the gases first enter the interior of the filter cavity and are filtered by the filter disk. As the filtering time increases, the rotating rod rotates, and the external moving rod rotates at the same time, so that the particles remaining accumulated on the filter disk can be moved, thereby revealing the filter holes. Finally, the gases enter the interior of the sensor housing through the filter holes, thereby preventing more particles from remaining and accumulating inside the sensor. When the sensor operates again, the gas cannot be transmitted any more.

[0020] Based on the above beneficial effects, a support ring is provided, a spring is provided inside the support ring, and a clamp ring is provided outside the spring. The operator can pull the rod to pull it, and the clamp ring moves toward the inside of the inner groove through the expansion and contraction of the spring. When the top cover is sealed on the top of the sensor housing, the pull rod is loosened, and the clamp ring is fixed to the outside of the sealing gasket by the rebound clamp of the spring, so that the sealing gasket can be completely fitted on the outside of the top cover, avoiding leakage due to loose sealing gasket and improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the sensor housing of the utility model;

[0023] Figure 2 This is a schematic diagram of the bottom of the top cover of the utility model;

[0024] Figure 3 It is a schematic diagram of the filter disc of the utility model;

[0025] Figure 4 This is a schematic diagram of the interior of the sensor of the present utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 11. Sensor housing; 12. Top cover; 13. Support seat; 14. Pins;

[0028] 21. air inlet; 22. filter chamber; 23. filter plate; 24. filter hole; 25. rotating rod; 26. limit plate; 27. movable rod;

[0029] 31. Inner cavity; 32. Damping rod; 33. Limiting ring; 34. Damping seat; 35. Limiting block;

[0030] 41. Support ring; 42. Sealing gasket; 43. Inner groove; 44. Pull rod; 45. Spring; 46. Clamp ring. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] See also Figure 1-3As shown, this embodiment is a miniaturized hydrazine gas electrochemical sensor, comprising:

[0035] A body component, the body component comprising a sensor housing 11 and a top cover 12;

[0036] A filter component, the filter component includes an air inlet 21, a filter cavity 22, a filter plate 23, a filter hole 24, a rotating rod 25, a limit plate 26 and a movable rod 27;

[0037] The filter cavity 22 is located inside the sensor housing 11, the filter disc 23 is located inside the filter cavity 22, the filter holes 24 are evenly spaced on the inner circumference of the filter disc 23, the middle of the top of the filter disc 23 is connected to the rotating rod 25, and the outer surface of the rotating rod 25 is symmetrically connected to the movable rod 27;

[0038] The rotating rod 25 rotates, and the external moving rod rotates simultaneously, so that the particles remaining on the filter disc 23 can be moved, thereby revealing the filter holes 24, and finally the gas enters the interior of the sensor housing 11 through the filter holes 24.

[0039] The top of the top cover 12 is symmetrically connected to the air inlet 21, and the top of the rotating rod 25 is connected to the limiting plate 26;

[0040] Gas in the external environment enters into the interior of the sensor housing 11 through the air inlet hole 21 .

[0041] It also includes a moving part, which includes an inner cavity 31, a damping rod 32, a limiting ring 33, a damping seat 34 and a limiting block 35;

[0042] The inner wall of the filter cavity 22 is symmetrically provided with an inner cavity 31, the middle of the inner cavity 31 is connected to a damping rod 32, a damping seat 34 is connected to the outside of the damping rod 32, the damping seat 34 is symmetrically connected to the outer surface of a limiting ring 33, the filter disc 23 is located inside the limiting ring 33, and the bottom of the damping rod 32 is connected to a limiting block 35;

[0043] The damping seat 34 can be adjusted outside the damping rod 32 to pull the support ring 41 downward to expose the limiting ring 33, separate the filter disc 23 from the limiting ring 33, and facilitate the removal of the filter disc 23.

[0044] The main body component also includes a support seat 13 and a pin 14;

[0045] The top cover 12 is connected to the top of the sensor housing 11, the support base 13 is connected to the bottom of the sensor housing 11, and the pins 14 are evenly connected to the bottom of the support base 13;

[0046] The support base 13 at the bottom can support the sensor housing 11 .

[0047] Working principle: first, the gas enters the filter chamber 22 through the air inlet 21, and is filtered by the filter disc 23. The filtered particles will remain on the top of the filter disc 23, and the gas enters the sensor housing 11 through the filter hole 24;

[0048] As the filtering time increases, the rotating rod 25 rotates, and the external moving rod rotates at the same time, so that the particles remaining on the filter plate 23 can be moved, thereby revealing the filter holes 24. Finally, the gas enters the interior of the sensor housing 11 through the filter holes 24, avoiding the problem that more particles will remain and accumulate inside the sensor, which will cause the gas to be unable to continue to be transmitted when the sensor is operated again.

[0049] Finally, the damping seat 34 can be adjusted outside the damping rod 32 to pull the support ring 41 downward, thereby exposing the limiting ring 33 and separating the filter disc 23 from the limiting ring 33, making it easier to remove the filter disc 23.

[0050] See also Figure 1 , Figure 4 As shown, this embodiment is based on the above embodiment 1 and further includes a sealing component, wherein the sealing component includes a support ring 41, a sealing gasket 42, an inner groove 43, a pull rod 44, a spring 45 and a clamp ring 46;

[0051] The support ring 41 is connected to the top of the sensor housing 11. An inner groove 43 is provided inside the support ring 41. A spring 45 is evenly connected inside the inner groove 43. The outside of the spring 45 is connected to a clamp ring 46. One end of the clamp ring 46 is symmetrically connected to a pull rod 44. The pull rod 44 passes through the support ring 41.

[0052] The clamp ring 46 moves toward the inside of the inner groove 43 through the expansion and contraction of the spring 45. When the top cover 12 is sealed on the top of the sensor housing 11, the pull rod 44 is loosened and the clamp ring 46 is fixed to the outside of the sealing gasket 42 by the rebound clamping of the spring 45, so that the sealing gasket 42 can be completely fitted on the outside of the top cover 12.

[0053] The sealing gasket 42 is bonded to the inner surface and the outer surface of the top cover 12, and the clamping ring 46 is clamped on the outer wall of the sealing gasket 42;

[0054] The clamping ring 46 clamps the sealing gasket 42 to improve the tightness of the sealing gasket 42 during use.

[0055] Working principle: when installing the top cover 12, the operator can pull the pull rod 44, and the spring 45 will be retracted and extended to move the clamp ring 46 toward the inside of the inner groove 43. When the top cover 12 is sealed on the top of the sensor housing 11, the pull rod 44 is loosened, and the clamp ring 46 is fixed to the outside of the sealing gasket 42 by the rebound clamp of the spring 45, so that the sealing gasket 42 can be completely fitted on the outside of the top cover 12, avoiding leakage due to loosening of the sealing gasket 42 and improving the sealing performance.

[0056] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A miniaturized hydrazine gas electrochemical sensor, characterized in that: include: A body component, the body component comprising a sensor housing (11) and a top cover (12); A filter component, the filter component comprising an air inlet (21), a filter cavity (22), a filter plate (23), a filter hole (24), a rotating rod (25), a limiting plate (26) and a movable rod (27); The filter cavity (22) is located inside the sensor housing (11), the filter disc (23) is located inside the filter cavity (22), the filter holes (24) are equidistantly arranged on the inner circumference of the filter disc (23), the middle of the top of the filter disc (23) is connected to the rotating rod (25), and the outer surface of the rotating rod (25) is symmetrically connected to the movable rod (27).

2. A miniaturized hydrazine gas electrochemical sensor according to claim 1, characterized in that: The top of the top cover (12) is symmetrically connected to the air inlet hole (21), and the top of the rotating rod (25) is connected to the limiting plate (26).

3. A miniaturized hydrazine gas electrochemical sensor according to claim 1, characterized in that: It also includes a moving component, which includes an inner cavity (31), a damping rod (32), a limiting ring (33), a damping seat (34) and a limiting block (35); The inner wall of the filter cavity (22) is symmetrically provided with an inner cavity (31), the middle of the inner cavity (31) is connected to the damping rod (32), the damping seat (34) is connected to the outside of the damping rod (32), the damping seat (34) is symmetrically connected to the outer surface of the limiting ring (33), the filter disc (23) is located inside the limiting ring (33), and the bottom of the damping rod (32) is connected to the limiting block (35).

4. A miniaturized hydrazine gas electrochemical sensor according to claim 1, characterized in that: The main body component also includes a support seat (13) and a pin (14); The top cover (12) is connected to the top of the sensor housing (11), the support base (13) is connected to the bottom of the sensor housing (11), and the pins (14) are evenly connected to the bottom of the support base (13).

5. A miniaturized hydrazine gas electrochemical sensor according to claim 1, characterized in that: It also includes a sealing component, which includes a support ring (41), a sealing gasket (42), an inner groove (43), a pull rod (44), a spring (45) and a clamping ring (46); The support ring (41) is connected to the top of the sensor housing (11), an inner groove (43) is provided inside the support ring (41), the inner part of the inner groove (43) is evenly connected to a spring (45), the outer part of the spring (45) is connected to a clamping ring (46), one end of the clamping ring (46) is symmetrically connected to a pull rod (44), and the pull rod (44) passes through the tube support ring (41).

6. A miniaturized hydrazine gas electrochemical sensor according to claim 5, characterized in that: The sealing gasket (42) is bonded to the inner surface and the outer surface of the top cover (12), and the clamping ring (46) is clamped on the outer wall of the sealing gasket (42).

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