Small probe assembly

Abstract

The utility model relates to a small-sized probe assembly, which comprises a positioning sleeve and a sleeve base, the sleeve base is provided with two parallel compensating leads, the upper ends of the compensating leads are electrically connected with the leading-out ends of two thermocouple wires of a U-shaped temperature measurement sensor, and the compensating leads are sleeved with movable suites. Two sliding holes matched with the compensation wires are formed in the positions, corresponding to the two parallel compensation wires, of the movable sleeve piece, a protection cavity is formed in the movable sleeve piece in a hollow mode, the protection cavity is arranged corresponding to an opening in one end of the U-shaped temperature measuring sensor, and the protection cavity is filled with a cementing material. By adopting the above technical scheme, the binding material has strong protectiveness on the U-shaped temperature measurement sensor, the thermocouple wire is not easy to damage, the probe detection accuracy and precision are further improved, the connection stability is enhanced, the structure of the probe assembly is greatly simplified, the parts are simplified, the cost is reduced, the assembly is convenient, the miniaturization of the probe assembly is facilitated, and the cost is reduced. The size is reduced and the cost performance is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of molten steel detection accessories, in particular to a small probe assembly. Background Art

[0002] In the metallurgical process, molten iron or molten steel needs to be tested. Testing is required in molten iron / molten steel, converter, electric furnace, LF furnace, RH furnace, continuous casting ladle, and VD furnace in the iron-making plant. The traditional molten steel temperature, oxygen, and aluminum measurement probe includes a positioning tube partially installed in the through-hole inner cavity of a high-temperature resistant paper tube, a cold end protection box and a signal connection socket are installed in the positioning tube, a U-shaped temperature sensor and an oxygen sensor are installed on the cold end protection box located on the exposed end of the positioning steel tube, the exposed U-shaped temperature sensor and oxygen sensor are covered by a protective cap and are connected to an external measurement and control device via a signal harness assembled on the signal connection socket, and a circle of high-temperature resin protective sand is solidified on the outer wall of the exposed part of the positioning tube outside the high-temperature resistant paper tube.

[0003] Since the U-shaped temperature sensor uses precious metal platinum-rhodium wire, the outlet ends of the two thermocouple wires of the existing temperature sensor are electrically connected to the upper ends of the parallel compensation wires, and the positioning tube is filled with sand and sealed with glue. However, the sand will enter the U-shaped temperature sensor through the U-shaped tube, thereby affecting the accuracy of thermocouple wire detection. Utility Model Content

[0004] In summary, in order to overcome the deficiencies of the prior art, the utility model provides a small probe assembly.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small probe assembly, including a positioning sleeve and a sleeve base, two parallel compensating wires are arranged on the sleeve base, the upper ends of the compensating wires are electrically connected to the outlet ends of two thermocouple wires of the U-shaped temperature sensor, and an active kit is arranged on the outer sleeve of the compensating wire. The active kit has two sliding holes corresponding to the positions of the two parallel compensating wires and are compatible with the compensating wires. The active kit is hollow and has a protective cavity, which is arranged corresponding to an opening at one end of the U-shaped temperature sensor, and is filled with a gelling material.

[0006] By adopting the above technical scheme, after the outlet ends of the two thermocouple wires of the U-shaped temperature sensor are electrically connected to the upper ends of the parallel compensation wires, the movable kit is moved along the compensation wire to wrap the connection between the U-shaped temperature sensor and the compensation wire, and then the protective cavity is filled with gelling material, which is protected by the movable kit, and the entire internal structure is fixedly connected by the gelling material. At the same time, compared with sand and gravel, the gelling material has stronger protection for the U-shaped temperature sensor and is not easy to damage the thermocouple wire, further improving the accuracy and precision of the probe detection and enhancing the stability of the connection. Secondly, the structure of the probe assembly is greatly simplified, the components are simplified, the cost is reduced, and the assembly is convenient. At the same time, it is conducive to the miniaturization of the probe assembly, the size is reduced, and the cost performance is high.

[0007] The utility model is further configured that: the width of the protection cavity is adapted to the width of the U-shaped temperature measuring sensor.

[0008] By adopting the above technical solution, after completing the connection between the U-shaped temperature sensor and the compensation wire at the work station, the movable kit is moved along the compensation wire so that the movable kit wraps the connection between the U-shaped temperature sensor and the compensation wire. Since the width of the protective cavity is adapted to the width of the U-shaped temperature sensor, the protective cavity and the U-shaped temperature sensor are snapped together, which plays a certain positioning role for the U-shaped temperature sensor and facilitates the filling of the next work station.

[0009] The utility model is further configured that: the width of the upper end of the compensation wire is greater than the diameter of the sliding hole.

[0010] By adopting the above technical solution, when the movable kit moves, the upper end of the compensation wire plays a limiting role to prevent the movable kit from being separated from the compensation wire.

[0011] The utility model is further provided that: a connecting ring for connecting the oxygen sensor is provided between the sleeve base and the movable kit, and the connecting ring is sleeved on one of the compensation wires.

[0012] By adopting the above technical solution, the connecting part of the oxygen sensor is inserted into the connecting ring, and the oxygen sensor is connected to the compensation wire through the connecting ring by processing the connecting ring (processing methods such as extrusion deformation or pressing deformation or welding, etc.).

[0013] The utility model is further configured as follows: a clamping portion is provided at one end of the positioning sleeve corresponding to the sleeve base, the clamping portion is symmetrically provided with a bayonet, the sleeve base includes a base, one end of the base is provided with a clamping portion clamped with the clamping portion, M-shaped grooves are symmetrically provided on both sides of the base, and an elastic card for abutting against the inner wall of the positioning sleeve is provided in the middle of the M-shaped groove.

[0014] By adopting the above technical solution, compared with the traditional card point connection, this technical solution adopts sheet-type docking and elastic card connection, multiple card connections, to enhance the stability of the connection. At the same time, the gap setting on both sides of the elastic card (M-shaped groove) makes the sleeve base have a strong deformation ability and the card connection effect is better.

[0015] The utility model is further configured that: the diameter of the clamping portion is greater than the diameter of the base body.

[0016] By adopting the above technical solution, installation is convenient, and at the same time, the base of the sleeve base and the inner wall of the positioning sleeve are interference-connected, so the stability of the connection is better.

[0017] The utility model is further configured as follows: one or more annular cards are arranged at the other end of the base body relative to the card portion, and the annular cards are in the shape of an oblong ring, both ends of which are semicircular rings, and the middle section is in the shape of a rectangular ring.

[0018] By adopting the above technical solution, the two ends of the annular card are semicircular rings that are compatible with the inner wall of the sleeve, and the middle section is a rectangular ring, so that the annular card has space for deformation, making the two ends and the inner wall of the positioning sleeve more tightly connected, further improving the stability of the connection.

[0019] The utility model is further configured that: the annular card is composed of two pieces, which are spaced apart in an upper and lower manner.

[0020] By adopting the above technical solution, the stability is further improved by multi-piece clamping.

[0021] The specific implementation of the utility model is described below in conjunction with the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0023] Figure 2 It is a partial structural stereogram of an embodiment of the utility model;

[0024] Figure numerals: 1. Positioning sleeve, 11. Clamping part, 12. Bayonet, 2. Sleeve base, 21. Base, 22. Clamping part, 23. M-shaped groove, 24. Elastic card, 25. Ring card, 3. Compensation wire, 4. Connecting ring, 5. U-shaped temperature sensor, 6. Movable kit, 61. Protective cavity, 7. Oxygen sensor. DETAILED DESCRIPTION

[0025] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0026] See attached Figure 1-2 A small probe assembly disclosed in this embodiment includes a positioning sleeve 1 and a sleeve base 2, two parallel compensation wires 3 are arranged on the sleeve base 2, the upper end of the compensation wire 3 is electrically connected to the outlet ends of two thermocouple wires of the U-shaped temperature sensor 5, and an active kit 6 is arranged on the outer sleeve of the compensation wire 3. The active kit 6 has two sliding holes corresponding to the positions of the two parallel compensation wires 3 and adapted to the compensation wires 3. The active kit 6 is hollow and has a protective cavity 61. The protective cavity 61 is arranged corresponding to an opening at one end of the U-shaped temperature sensor 5, and the protective cavity 61 is filled with a gelling material.

[0027] In the technical solution of the utility model, the cementitious material can be cement or glue, etc., but is not limited to these two cementitious materials.

[0028] This embodiment further provides that: the width of the protection cavity 61 is adapted to the width of the U-shaped temperature sensor 5 .

[0029] This embodiment further provides that: the width of the upper end of the compensation wire 3 is greater than the diameter of the sliding hole.

[0030] This embodiment further provides that: a connecting ring 4 for connecting the oxygen sensor 7 is provided between the sleeve base 2 and the movable kit 6 , and the connecting ring 4 is sleeved on one of the compensation wires 3 .

[0031] This embodiment is further configured as follows: a clamping portion 11 is provided at one end of the positioning sleeve 1 corresponding to the sleeve base 2, and the clamping portion 11 is symmetrically provided with a bayonet 12, and the sleeve base 2 includes a base 21, and a clamping portion 22 clamped with the clamping portion 11 is provided at one end of the base 21, and M-shaped grooves 23 are symmetrically provided on both sides of the base 21, and an elastic card 24 for abutting against the inner wall of the positioning sleeve 1 is provided in the middle of the M-shaped groove 23.

[0032] This embodiment further provides that: the diameter of the clamping portion 11 is greater than the diameter of the base 21 .

[0033] The present embodiment is further provided with: one or more annular clips 25 are provided at the other end of the base 21 opposite to the clip portion 22, and the annular clips 25 are in the shape of an oblong ring, both ends of which are semicircular rings, and the middle section is in the shape of a rectangular ring.

[0034] The present embodiment further provides that: the annular card 25 is composed of two pieces, which are arranged in an upper and lower space.

[0035] The above-mentioned “between” does not only refer to directions and positions, but also includes the meaning of the interaction between different parts. The above-mentioned “upper and lower” are only relative descriptions for the convenience of description and understanding, and other possibilities are not excluded.

[0036] Although the terminology such as positioning sleeve 1, clamping part 11, bayonet 12, sleeve base 2, base 21, clamping part 22, M-shaped groove 23, elastic card 24, annular card 25, compensation wire 3, connecting ring 4, U-shaped temperature sensor 5, movable kit 6, protective cavity 61, oxygen sensor 7 is used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional limitation is contrary to the spirit of the utility model.

Claims

1. A small probe assembly, characterized in that: It includes a positioning sleeve and a sleeve base, two parallel compensating wires are arranged on the sleeve base, the upper ends of the compensating wires are electrically connected to the outlet ends of two thermocouple wires of the U-shaped temperature sensor, an active kit is arranged on the outer sleeve of the compensating wire, and two sliding holes adapted to the compensating wires are arranged at the positions of the two parallel compensating wires. A protective cavity is arranged in the hollow of the active kit, and the protective cavity is arranged corresponding to an opening at one end of the U-shaped temperature sensor, and the protective cavity is filled with a gelling material.

2. A small probe assembly according to claim 1, characterized in that: The width of the protection cavity is adapted to the width of the U-shaped temperature measuring sensor.

3. A small probe assembly according to claim 1, characterized in that: The width of the upper end of the compensation wire is greater than the diameter of the sliding hole.

4. A small probe assembly according to claim 1, characterized in that: A connecting ring for connecting the oxygen sensor is arranged between the sleeve base and the movable kit, and the connecting ring is sleeved on one of the compensation wires.

5. The small probe assembly according to claim 1, characterized in that: A clamping portion is provided at one end of the positioning sleeve corresponding to the sleeve base, and the clamping portion is symmetrically provided with a bayonet. The sleeve base includes a base, and a clamping portion clamped with the clamping portion is provided at one end of the base. M-shaped grooves are symmetrically provided on both sides of the base, and an elastic card for abutting against the inner wall of the positioning sleeve is provided in the middle of the M-shaped groove.

6. A small probe assembly according to claim 5, characterized in that: The diameter of the clamping portion is greater than the diameter of the base.

7. A small probe assembly according to claim 5, characterized in that: The other end of the base body relative to the clamping part is provided with more than one annular card, and the annular card is in the shape of an elongated circular ring, both ends of which are semicircular rings, and the middle section is in the shape of a rectangular ring.

8. A small probe assembly according to claim 7, characterized in that: The annular card consists of two pieces, which are arranged at an interval up and down.

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