Resistance probe with replaceable test piece

Abstract

The utility model provides a resistance probe with a replaceable test piece, which comprises a shell frame, one side of the shell frame is connected with a navigation socket, the navigation socket is provided with a navigation pin, a sealing filler is arranged in the shell frame, the sealing filler is connected with two metal fixing columns, the outer side of the shell frame is provided with the replaceable test piece, and the replaceable test piece is connected with the navigation pin. The two ends of the replaceable test piece penetrate through the interior of the shell frame and are fixedly connected with the metal fixing columns. Compared with the prior art, the utility model has the following beneficial effects: the use and maintenance cost of a user is obviously reduced, only the test piece is required to be replaced instead of the whole probe product, the flexibility and adaptability of equipment are improved, the user can select probes of different specifications according to requirements, the overall reliability and durability of the probe are improved through optimization design, and the service life of the probe is prolonged. Sustainable utilization of resources is promoted, generation of waste is reduced, and the environment-friendly concept is met.

Description

Technical Field

[0001] The utility model relates to a resistance probe with a replaceable test piece, belonging to the field of resistance probes. Background Art

[0002] After long-term use, traditional probes often need to be replaced due to the continuous corrosion and consumption of the probe test piece, which exhausts the probe's lifespan. The probe itself is typically made of corrosion-resistant stainless steel or alloy, which is expensive. This not only increases the user's financial burden but also wastes resources. The entire probe has a long production cycle, and to ensure that experiments or monitoring can proceed, spare parts must be purchased simultaneously, which in turn increases costs. While some products on the market attempt to address this issue, they generally suffer from defects such as inconvenient replacement, poor sealing, and poor compatibility, failing to fundamentally address user needs. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a resistance probe with a replaceable test piece.

[0004] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0005] A resistance probe with a replaceable test piece includes a shell frame, one side of the shell frame is connected to an aviation socket, the aviation socket is provided with an aviation pin, a sealing filler is provided inside the shell frame, two metal fixing columns are connected to the sealing filler, a replaceable test piece is provided on the outside of the shell frame, both ends of the replaceable test piece pass through the interior of the shell frame and are connected and fixed to the metal fixing columns, and a sealing gasket is provided inside the shell frame to cooperate with the metal fixing columns and the connecting end of the replaceable test piece.

[0006] Furthermore, the shell frame includes a probe shell, an injection head shell and a fixing sleeve, one end of the probe shell is connected to the navigation socket, the other end of the probe shell is connected to one end of the injection head shell, and the other end of the injection head shell is connected to the fixing sleeve.

[0007] Furthermore, the sealing filler is fixed at an opening of the injection head housing close to the fixed sleeve. Two cylindrical mounting holes are provided on the sealing filler, and the metal fixing columns are installed in the cylindrical mounting holes.

[0008] Furthermore, a groove is formed on a side of the metal fixing column away from the sealing filler, a fastening screw is connected in the groove, and the fastening screw connects the end of the replaceable test piece to the metal fixing column.

[0009] Furthermore, the metal fixing column is a cylindrical structure.

[0010] Furthermore, a circular groove cooperating with the metal fixing column and a rectangular groove cooperating with the replaceable test piece are respectively formed on both sides of the sealing gasket, and the rectangular groove is communicated with the circular groove.

[0011] Furthermore, the sealing gasket includes two semi-cylinders, and the two semi-cylinders are assembled into a cylinder.

[0012] Furthermore, the circular groove includes two semicircular grooves, and the semicircular grooves are opened on opposite sides of the two semi-cylinders.

[0013] Furthermore, the rectangular groove includes two U-shaped grooves, and the U-shaped grooves are opened on opposite sides of the two semi-cylinders.

[0014] Furthermore, an outer surface of the end portion of the injection head housing is provided with an external thread, an opening of the fixing sleeve is provided with an internal thread, and the injection head housing and the fixing sleeve are threadably connected to the internal thread via the external thread.

[0015] Beneficial effects of the utility model:

[0016] This utility model significantly reduces the user's usage and maintenance costs. It only requires replacing the test piece instead of the entire probe product, which improves the flexibility and adaptability of the equipment. Users can choose probes of different specifications according to their needs. Through optimized design, the overall reliability and durability of the probe are improved, which promotes the sustainable use of resources, reduces waste generation, and complies with environmental protection concepts.

[0017] The replaceable test piece of the utility model is replaceable, ensuring that the test piece can be replaced stably, reliably, simply and quickly.

[0018] The metal fixing column of the utility model adopts a sealing design, and the exposed part of the metal fixing column is sealed, so that only the replaceable test piece is exposed in the test environment, thereby avoiding corrosion of the metal fixing column and extending the service life of the probe.

[0019] The utility model can customize the probe interface and define a set of universal or special probe interface standards so that the probe can be installed on a container or a pipeline.

[0020] The utility model adopts sealing filler to fix and fill between the probe and the metal fixing column, thereby avoiding leakage of the probe and realizing a sealing design of the probe.

[0021] The replaceable test piece of the utility model is fixed to the metal fixing column by screws or jackscrews, which makes replacement easy and has low requirements on the operator.

[0022] The utility model adopts a sealing gasket customized by Teflon to seal the exposed part of the metal fixing column, thereby preventing the metal fixing column from being corroded, improving the reliability of monitoring data, and extending the service life of the probe.

[0023] The utility model designs a thread connection mode, wherein an external thread is arranged on the outer surface of the probe, and an internal thread connection is arranged on a container or a pipe mounting seat.

[0024] The probe of the utility model and the metal fixing column have a variety of sealing fillers according to different working conditions, such as epoxy resin, engineering plastics, glass, etc., to meet different experimental needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the explosion structure of a resistance probe with a replaceable test piece according to the present invention;

[0027] Figure 2 This is a schematic cross-sectional view of a resistance probe with a replaceable test piece according to the present invention;

[0028] Figure 3 The utility model is a schematic diagram of a fixed sleeve structure of a resistance probe with a replaceable test piece.

[0029] In the figure, 1. Aviation pin; 2. Aviation socket; 3. Probe housing; 4. Injection head housing; 5. Sealing filler; 6. Fixing sleeve; 7. Metal fixing column; 8. Fastening screw; 9. Sealing gasket; 10. Replaceable test piece. DETAILED DESCRIPTION

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

[0031] See also Figure 1-Figure 3The present invention provides a technical solution for a resistance probe with a replaceable test piece, including a shell frame, one side of the shell frame is connected to an aviation socket 2, the aviation socket 2 is provided with an aviation pin 1, a sealing filler 5 is provided inside the shell frame, and two metal fixing columns 7 are connected to the sealing filler 5, and a replaceable test piece 10 is provided on the outside of the shell frame. The material of the replaceable test piece 10 can be replaced within a certain range, which is convenient for measuring and monitoring the corrosion of pipelines of different materials, without the need to purchase multiple probes. Both ends of the replaceable test piece 10 pass through the interior of the shell frame and are connected and fixed to the metal fixing column 7. The interior of the shell frame is provided with a sealant 5 connected to the metal fixing column 7. The sealing gasket 9 that matches the connecting end of the metal fixing column 7 and the replaceable test piece 10 ensures the sealing of the metal fixing column 7 through the fixing sleeve 6 and the sealing gasket 9, so that the metal fixing column 7 does not come into contact with the corrosive medium in the test environment, prevents the metal fixing column 7 from corrosion, and extends the service life. A conical structure fixing frame can also be provided on the outside of the sealing gasket 9 to help the sealing gasket 9 to assist in sealing, so that the fixing sleeve 6 can better compress the sealing gasket 9, thereby making the sealing gasket 9 and the metal fixing column 7 more tightly combined to achieve a better sealing effect, and sealing grease, glass glue and other auxiliary seals can be filled between the fixing sleeve 6, the metal fixing column 7 and the sealing gasket 9.

[0032] See Figure 1-Figure 2 The shell frame includes a probe shell 3, an injection head shell 4 and a fixed sleeve 6. One end of the probe shell 3 is connected to the navigation socket 2, and the other end of the probe shell 3 is connected to one end of the injection head shell 4. The other end of the injection head shell 4 is connected to the fixed sleeve 6. The outer surface of the probe shell 3 is provided with an external thread, and the container or pipe mounting seat is provided with an internal thread connection to facilitate the connection between the container or pipe and the probe shell 3.

[0033] See Figure 1-Figure 2 The sealing filler 5 is fixed at the opening of the injection head housing 4 close to the fixed sleeve 6. Two cylindrical mounting holes are provided on the sealing filler 5, and the metal fixing column 7 is installed in the cylindrical mounting holes. The cylindrical mounting holes are provided to facilitate the connection between the sealing filler 5 and the metal fixing column 7.

[0034] See Figure 1-Figure 2 A groove is formed on the side of the metal fixing column 7 away from the sealing filler 5, and a fastening screw 8 is connected in the groove. The fastening screw 8 connects the end of the replaceable test piece 10 to the metal fixing column 7. The metal fixing column 7 is a cylindrical structure. The replaceable test piece 10 is fixed by two metal fixing columns 7 and the fastening screw 8 to achieve the replaceable test piece 10. At the same time, the metal fixing column 7 acts as a wire.

[0035] See Figure 1-Figure 2, a circular groove cooperating with the metal fixing column 7 and a rectangular groove cooperating with the replaceable test piece 10 are respectively opened on both sides of the sealing gasket 9, and the rectangular groove is connected to the circular groove. The sealing gasket 9 includes two semi-cylinders, and the two semi-cylinders are assembled into a cylinder. The circular groove includes two semi-circular grooves, and the semi-circular grooves are opened on the opposite side of the two semi-cylinders. The rectangular groove includes two U-shaped grooves, and the U-shaped grooves are opened on the opposite side of the two semi-cylinders; through the arrangement of the circular groove and the rectangular groove, the metal fixing column 7 and the replaceable test piece 10 are conveniently adapted to the sealing gasket 9.

[0036] See Figure 1-Figure 2 The outer surface of the end of the injection head shell 4 is provided with an external thread, and the opening of the fixed sleeve 6 is provided with an internal thread. The injection head shell 4 and the fixed sleeve 6 are threadedly connected through the external thread and the internal thread; through the setting of the external thread and the internal thread, the connection between the injection head shell 4 and the fixed sleeve 6 is facilitated.

[0037] During use, traditional probes are made as a whole, with the test element and the shell being cast or welded into a whole. The life of the test piece is usually 1-2 years, and even 1 month in a highly corrosive environment. Once the test piece is consumed, the probe is scrapped. The probe shell is usually made of corrosion-resistant alloy or stainless steel, which is expensive. Disposable probes greatly increase the cost of corrosion monitoring. The replaceable probe protected by the present invention perfectly solves the above problem. The body can be reused, and only the replaceable test piece 10 needs to be replaced, which greatly reduces the monitoring cost of corrosion monitoring in scenarios such as oilfield chemical industry and laboratories. Issues that need to be considered in replacing traditional disposable probes include high pressure / high temperature environments:

[0038] Under normal temperature and pressure (≤3MPa, 80℃): the probe body can be made of stainless steel or even engineering plastics, such as 304L, 316L, ABS plastic, etc. 5- Sealing filler can be made of ordinary fillers such as epoxy resin to meet the use requirements. In addition, under this condition, the probe shell 3 can be processed as one with the injection head shell 4; Under high temperature and normal pressure (≥160℃): the probe body can be made of stainless steel or high temperature resistant plastics, such as 304L, 316L, modified PA66, PTFE and other materials, and the sealing filler 5 is filled with heat-resistant epoxy resin for packaging; Under high temperature and high pressure (20MPa, 160℃): the probe body can be made of duplex stainless steel, stainless steel, corrosion-resistant alloy, such as S2205, S31803 and other materials, and the sealing filler is filled with glass for packaging - glass sintering process, and suitable glass powder is selected according to the different materials of the probe shell 3 to ensure the sealing effect; Under high flow rate environment, the fixed sleeve 6 can be processed into Figure 3The probe housing 3 can be processed into different forms to adapt to different systems. The drawings in the specification only show the reactor-applicable type. It can also be processed into a standard 2" interface system form to adapt to the interfaces of most corrosion monitoring systems in existing oil and gas fields. The sealing filler 5 can be built-in with a thermocouple to monitor the temperature data of the corrosive medium in real time.

[0039] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A resistance probe with a replaceable test piece, characterized in that: The invention comprises a shell frame, one side of which is connected to an aviation socket (2), the aviation socket (2) is provided with an aviation pin (1), a sealing filler (5) is provided inside the shell frame, two metal fixing columns (7) are connected to the sealing filler (5), a replaceable test piece (10) is provided on the outside of the shell frame, both ends of the replaceable test piece (10) are passed through the inside of the shell frame and are connected and fixed to the metal fixing columns (7), and a sealing gasket (9) is provided inside the shell frame to match the connection end of the metal fixing columns (7) and the replaceable test piece (10).

2. The resistance probe with a replaceable test piece according to claim 1, characterized in that: The housing frame comprises a probe housing (3), an injection head housing (4) and a fixing sleeve (6); one end of the probe housing (3) is connected to the navigation socket (2); the other end of the probe housing (3) is connected to one end of the injection head housing (4); and the other end of the injection head housing (4) is connected to the fixing sleeve (6).

3. The resistance probe with a replaceable test piece according to claim 2, characterized in that: The sealing filler (5) is fixed to an opening of the injection head housing (4) close to the fixed sleeve (6). Two cylindrical mounting holes are provided on the sealing filler (5), and the metal fixing column (7) is installed in the cylindrical mounting holes.

4. The resistance probe with a replaceable test piece according to claim 1, characterized in that: The metal fixing column (7) is provided with a groove on a side away from the sealing filler (5), a fastening screw (8) is connected in the groove, and the fastening screw (8) connects the end of the replaceable test piece (10) to the metal fixing column (7).

5. The resistance probe with a replaceable test piece according to claim 4, characterized in that: The metal fixing column (7) is a cylindrical structure.

6. The resistance probe with a replaceable test piece according to claim 1, characterized in that: A circular groove cooperating with the metal fixing column (7) and a rectangular groove cooperating with the replaceable test piece (10) are respectively provided on both sides of the sealing gasket (9), and the rectangular groove is communicated with the circular groove.

7. The resistance probe with a replaceable test piece according to claim 6, characterized in that: The sealing gasket (9) comprises two semi-cylinders, which are assembled into a cylinder.

8. The resistance probe with a replaceable test piece according to claim 7, characterized in that: The circular groove includes two semicircular grooves, and the semicircular grooves are opened on opposite sides of the two semi-cylinders.

9. The resistance probe with a replaceable test piece according to claim 7, characterized in that: The rectangular groove includes two U-shaped grooves, and the U-shaped grooves are opened on opposite sides of the two semi-cylinders.

10. The resistance probe with a replaceable test piece according to claim 2, characterized in that: The outer surface of the end of the injection head housing (4) is provided with an external thread, and the opening of the fixing sleeve (6) is provided with an internal thread. The injection head housing (4) and the fixing sleeve (6) are threadedly connected to the internal thread via the external thread.

Images