Negative pressure pull-out prevention conductivity sensor

Abstract

The utility model discloses an anti-negative pressure pull-out conductivity sensor, which comprises an electrode fixing piece and an electrode body, the electrode body is installed on the electrode fixing piece, the electrode fixing piece is sleeved with an outer tube in interference fit with the electrode fixing piece, the bottom end of the outer tube is fixedly connected with an anti-falling sleeve, the bottom end of the anti-falling sleeve is fixedly connected with a filling sleeve, and the filling sleeve is fixedly connected with a plug. The electrode body is positioned on the inner sides of the anti-falling sleeve and the filling sleeve, and a sealing layer is filled in the anti-falling sleeve and the filling sleeve. According to the utility model, the pressure-resistant performance of the sensor is effectively improved, the sensor can be applied to high-pressure and negative-pressure environments, stability and precision of measured values are kept for a long time, the application problem of high-pressure and negative-pressure conductivity industry requirements is further solved, and a feasible scheme is provided for expansion of part of industry technologies.

Description

Technical Field

[0001] This utility model relates to the field of conductivity sensor technology, and more specifically, to a conductivity sensor that is protected against negative pressure pull-out. Background Technology

[0002] Conductivity sensors are widely used, but in some application scenarios, there may be negative pressure conditions. Most sensors on the market use processes such as all-stainless steel sealing and O-rings to fix and seal the measuring electrode and the outer tube.

[0003] Due to factors such as high cost of stainless steel welding, skill level of operators, and material limitations, it is only suitable for specific industries and small-batch production. O-rings have limited pressure resistance; if the reverse pressure is too high, the impact on the sensor can cause it to loosen, affecting the accuracy of the measurement, lifespan, and even the safety of the equipment. Therefore, a conductivity sensor that can be pulled out under negative pressure is needed. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a conductivity sensor that is protected against negative pressure pull-out, so as to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution;

[0006] A conductivity sensor designed to prevent negative pressure pull-out includes an electrode fixing component and an electrode body. The electrode body is mounted on the electrode fixing component. An outer tube with an interference fit is fitted onto the electrode fixing component. An anti-disengagement sleeve is fixedly connected to the bottom end of the outer tube. A filler sleeve is fixedly connected to the bottom end of the anti-disengagement sleeve. The electrode body is located inside the anti-disengagement sleeve and the filler sleeve. A sealing layer is filled into the anti-disengagement sleeve and the filler sleeve.

[0007] As a further description of the above technical solution:

[0008] The anti-slip sleeve is bent towards the center in the middle, and the sealing layer is an epoxy resin layer.

[0009] As a further description of the above technical solution:

[0010] The inner wall of the filling sleeve is provided with anti-detachment grooves arranged at equal intervals. The anti-detachment grooves are arranged in a ring shape, and the sealing layer is located inside the anti-detachment grooves.

[0011] As a further description of the above technical solution:

[0012] The inner wall of the anti-detachment groove is fixedly connected with an annularly distributed anti-detachment rod, which is located inside the sealing layer.

[0013] As a further description of the above technical solution:

[0014] The electrode fixing component is fitted with two sealing rings that are fixedly connected to it, and the outer sides of the two sealing rings are in contact with the inner wall of the outer tube.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] This solution effectively improves the sensor's pressure resistance, enabling it to be applied in high-pressure and negative-pressure environments while maintaining long-term measurement stability and accuracy. This solves the application challenges of high-pressure and negative-pressure conductivity requirements in certain industries and provides a feasible solution for the expansion of technologies in some sectors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a perspective view of the filler sleeve before glue application in this utility model;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This utility model Figure 3 Enlarged view of part A in the middle.

[0021] Explanation of the labels in the diagram:

[0022] 1. Electrode fixing component; 2. Electrode body; 3. Outer tube; 4. Anti-detachment sleeve; 5. Filler sleeve; 6. Sealing layer; 7. Anti-detachment groove; 8. Anti-detachment rod; 9. Sealing ring. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] See also Figures 1-4 In this utility model: a conductivity sensor with anti-negative pressure pull-out includes an electrode fixing component 1 and an electrode body 2. The electrode body 2 is installed on the electrode fixing component 1. An outer tube 3 with an interference fit is sleeved on the electrode fixing component 1. An anti-detachment sleeve 4 is fixedly connected to the bottom end of the outer tube 3. A filling sleeve 5 is fixedly connected to the bottom end of the anti-detachment sleeve 4. The electrode body 2 is located inside the anti-detachment sleeve 4 and the filling sleeve 5. A sealing layer 6 is filled into the anti-detachment sleeve 4 and the filling sleeve 5.

[0025] In this invention, the electrode fixing component 1 is interference-fitted with the inner cavity of the outer tube 3, the electrode body 2 is fixed with the inner cavity of the anti-detachment sleeve 4 and the filling sleeve 5 by potting glue, and the sealing layer 6 is made of potting glue. This protective structure blocks the impact of water pressure on the sensor and the water seepage during contact, and can also fill the inner cavity to reduce the influence of reverse pressure on the electrode body 2, thereby extending the sensor life.

[0026] See also Figures 1-4 The anti-detachment sleeve 4 is bent towards the center, and the sealing layer 6 is an epoxy resin layer.

[0027] In this invention, the anti-detachment sleeve 4 is bent towards the center, which can limit the bottom of the electrode fixing member 1, thereby reducing the occurrence of the electrode fixing member 1 moving in the outer tube 3 and improving the practicality of the device.

[0028] See also Figures 2-4 The inner wall of the filling sleeve 5 is provided with anti-detachment grooves 7 arranged at equal intervals. The anti-detachment grooves 7 are arranged in a ring shape, and the sealing layer 6 is located inside the anti-detachment grooves 7.

[0029] In this invention, the anti-detachment groove 7 allows epoxy resin to be injected into the anti-detachment sleeve 4 and the filling sleeve 5, and the epoxy resin will fill the anti-detachment groove 7, so that the outer side of the sealing layer 6 has a stepped structure, which effectively prevents the sealing layer 6 from falling off, thereby improving the stability of the device.

[0030] See also Figures 2-4 Among them, the inner wall of the anti-detachment groove 7 is fixedly connected with annularly distributed anti-detachment rods 8, which are located inside the sealing layer 6.

[0031] In this invention, the anti-detachment rod 8 can be inserted into the epoxy resin, further enhancing the firmness of the sealing layer 6.

[0032] See also Figure 3 Among them, the electrode fixing component 1 is fitted with two sealing rings 9 that are fixedly connected to it, and the outer sides of the two sealing rings 9 are in contact with the inner wall of the outer tube 3.

[0033] In this invention, the sealing ring 9 can further reduce leakage between the electrode fixing member 1 and the outer tube 3, thereby improving the practicality of the device.

[0034] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A conductivity sensor with anti-negative pressure pull-out capability, comprising an electrode fixing member (1) and an electrode body (2), wherein the electrode body (2) is mounted on the electrode fixing member (1), characterized in that: The electrode fixing component (1) is fitted with an outer tube (3) that is interference-fitted with it. The bottom end of the outer tube (3) is fixedly connected to an anti-detachment sleeve (4). The bottom end of the anti-detachment sleeve (4) is fixedly connected to a filler sleeve (5). The electrode body (2) is located inside the anti-detachment sleeve (4) and the filler sleeve (5). A sealing layer (6) is filled into the anti-detachment sleeve (4) and the filler sleeve (5).

2. The conductivity sensor for preventing negative pressure pull-out according to claim 1, characterized in that: The anti-detachment sleeve (4) is bent towards the center, and the sealing layer (6) is an epoxy resin layer.

3. The conductivity sensor for preventing negative pressure pull-out according to claim 1, characterized in that: The inner wall of the filling sleeve (5) is provided with anti-detachment grooves (7) arranged at equal intervals. The anti-detachment grooves (7) are arranged in a ring shape, and the sealing layer (6) is located inside the anti-detachment grooves (7).

4. The anti-negative-pressure pull-out conductivity sensor according to claim 3, characterized in that: The inner wall of the anti-detachment groove (7) is fixedly connected with annularly distributed anti-detachment rods (8), which are located inside the sealing layer (6).

5. The conductivity sensor for preventing negative pressure pull-out according to claim 1, characterized in that: The electrode fixing component (1) is fitted with two sealing rings (9) that are fixedly connected to it, and the outer sides of the two sealing rings (9) are in contact with the inner wall of the outer tube (3).

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