A positive and negative electrode connection fault diagnosis device for a sublance probe thermocouple loop

Abstract

The utility model discloses a kind of positive and negative electrode connection fault diagnosis devices of vice gun probe thermocouple loop, it is related to thermocouple technical field, including base, the base is provided with thread groove, the thread groove is connected with bolt, the base is provided with indicating component;The indicating component includes sliding slot, the sliding slot slidingly connected with indicating column, the indicating column is provided with accommodating groove, the first spring is fixedly connected in the accommodating groove, the first spring is fixedly connected with sliding slot, the circumferential surface of the indicating column is provided with positioning groove, the positioning groove slidingly connected with plug block;The utility model shows the connection state of positive and negative electrode by the telescopic state of indicating column in indicating component, when positive and negative electrode connection is normal, indicating column is extended, and operating personnel can judge the connection state of positive and negative electrode by the state of indicating column, without using instrument detection, simplify maintenance process, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of thermocouple technology, and in particular to a diagnostic device for the positive and negative connection faults of a secondary gun probe thermocouple circuit. Background Technology

[0002] The auxiliary lance probe thermocouple circuit is a circuit system that uses the thermocouple principle to convert temperature changes into a measurable voltage signal, mainly used for industrial temperature detection. In the converter steelmaking process, the auxiliary lance probe is used to insert into the molten pool for temperature measurement, sampling, or oxygen determination, and its front end integrates a fast-disposable thermocouple.

[0003] The positive and negative poles of the thermocouple are connected to the internal wires of the probe through elastic contacts, pins, or threaded connectors. The reliability of the positive and negative pole connection of the thermocouple circuit directly affects the temperature measurement accuracy and data validity.

[0004] However, the positive and negative connection status of the thermocouple circuit does not have a fault identification function. When there is an abnormality in the connection between the positive and negative terminals, the staff cannot get feedback, which ultimately affects the temperature measurement accuracy and the validity of the data. Utility Model Content

[0005] Given that the above-mentioned thermocouple circuit does not have a fault identification function for the positive and negative pole connection status, and that when there is an abnormality of poor contact in the connection between the positive and negative poles, the staff cannot receive feedback, which ultimately affects the temperature measurement accuracy and the validity of the data, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a fault diagnosis device for the positive and negative connection of the thermocouple circuit of the auxiliary gun probe. The connection status of the positive and negative poles is displayed by the extension and retraction state of the indicator column in the indicator component. When the positive and negative poles are connected normally, the indicator column extends, and the operator can judge the connection status of the positive and negative poles by observing the state of the indicator column. There is no need to use instruments for testing, which simplifies the maintenance process and improves work efficiency.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fault diagnosis device for the positive and negative pole connection of the thermocouple circuit of the auxiliary gun probe, including a base, the base having a threaded groove, the threaded groove being connected to a bolt, and the base being provided with an indicator component; The indicating component includes a sliding groove, an indicating post slidably connected to the sliding groove, an accommodating groove on the indicating post, a first spring fixedly connected inside the accommodating groove, the first spring being fixedly connected to the sliding groove, a positioning groove on the peripheral side of the indicating post, and an insert block slidably connected to the positioning groove.

[0008] As a preferred embodiment of the fault diagnosis device for the positive and negative terminals of the thermocouple circuit of the auxiliary gun probe described in this utility model, the indicating component further includes a storage slot, in which a second spring is fixedly installed, and the second spring is fixedly connected to the insert block.

[0009] As a preferred embodiment of the fault diagnosis device for the positive and negative pole connection of the thermocouple circuit of the auxiliary gun probe described in this utility model, the outlet position of the sliding groove is provided with a constriction, the indicator post is fixedly connected with a retaining ring, the indicator post is slidably connected to the constriction, and the retaining ring is slidably connected to the sliding groove.

[0010] As a preferred embodiment of the fault diagnosis device for the positive and negative terminals of the thermocouple circuit of the auxiliary gun probe described in this utility model, a matching part is fixedly connected to the shank of the bolt.

[0011] As a preferred embodiment of the fault diagnosis device for the positive and negative connection of the thermocouple circuit of the auxiliary gun probe described in this utility model, the base is provided with slots and auxiliary slots, a plurality of slots are connected to the auxiliary slots, and the threaded slots are connected to the slots.

[0012] As a preferred embodiment of the fault diagnosis device for the positive and negative connection of the thermocouple circuit of the auxiliary gun probe described in this utility model, the slot is provided with a groove, a third spring is fixedly installed in the groove, a wedge is fixedly connected to the third spring, and the wedge is slidably connected to the groove.

[0013] The beneficial effects of this utility model are: 1. This utility model displays the connection status of positive and negative terminals by extending or retracting the indicator post in the indicator component. When the positive and negative terminals are connected normally, the indicator post extends, and the operator can judge the connection status of the positive and negative terminals by observing the state of the indicator post. This eliminates the need for instrument testing, simplifies the maintenance process, and improves work efficiency.

[0014] 2. This utility model uses a third spring to push the wedge out of the groove, so that the wedge can limit the head of the bolt and prevent the bolt from loosening due to vibration. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a fault diagnosis device for the positive and negative terminals of a thermocouple circuit of a secondary gun probe according to this utility model.

[0016] Figure 2 This is a cross-sectional view of a fault diagnosis device for the positive and negative terminals of a thermocouple circuit of a secondary gun probe according to this utility model.

[0017] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0018] Figure 4 This is a schematic diagram of the bolts, indicator components, third spring, and wedge block of a fault diagnosis device for the positive and negative terminals of a secondary gun probe thermocouple circuit according to this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Base; 2. Threaded groove; 3. Bolt; 4. Indicator assembly; 401. Sliding groove; 402. Indicator post; 403. Receiving groove; 404. First spring; 405. Positioning groove; 406. Insert block; 407. Storage groove; 408. Second spring; 5. Closure; 6. Retaining ring; 7. Matching part; 8. Slot; 9. Auxiliary groove; 10. Groove; 11. Third spring; 12. Wedge block. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Example 1 Reference Figures 1-4 This is the first embodiment of the present invention, which provides a fault diagnosis device for the positive and negative connection of the thermocouple circuit of the auxiliary gun probe, including a base 1, a threaded groove 2 on the base 1, a bolt 3 connected to the threaded groove 2, and an indicator component 4 on the base 1. The indicator component 4 includes a sliding groove 401, an indicator post 402 slidably connected to the sliding groove 401, an accommodating groove 403 is provided on the indicator post 402, a first spring 404 is fixedly connected in the accommodating groove 403, the first spring 404 is fixedly connected to the sliding groove 401, a positioning groove 405 is provided on the peripheral side of the indicator post 402, and an insert block 406 is slidably connected to the positioning groove 405.

[0022] The indicator component 4 also includes a storage slot 407, in which a second spring 408 is fixedly installed, and the second spring 408 is fixedly connected to the insert block 406.

[0023] The outlet of the sliding groove 401 is provided with a constriction 5, and the indicator post 402 is fixedly connected with a retaining ring 6. The indicator post 402 is slidably connected to the constriction 5, and the retaining ring 6 is slidably connected to the sliding groove 401.

[0024] Example 2 Reference Figures 1-4This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the shank of the bolt 3 is fixedly connected to a matching part 7. The positive and negative poles are connected by means of contact plates, and the contact plates of the positive and negative poles are U-shaped and concave, respectively. The corresponding matching parts 7 are circular and hollow cuboid, respectively.

[0025] The base 1 has slots 8 and auxiliary slots 9, with several slots 8 connected to the auxiliary slots 9, and threaded slots 2 connected to the slots 8.

[0026] The slot 8 has a groove 10, and a third spring 11 is fixedly installed in the groove 10. The third spring 11 is fixedly connected to a wedge 12, and the wedge 12 is slidably connected to the groove 10.

[0027] In use, screw the bolt 3 into the threaded groove 2, but do not tighten it. Then place the contact piece parallel to the auxiliary groove 9 and slide it into the slot 8 until the contact piece abuts against the matching part 7 on the bolt 3. Based on the special shape of the contact piece and the matching part 7, the U-shaped contact piece abuts against the annular matching part 7, and the concave contact piece abuts against the hollow cuboid matching part 7. If the insertion is incorrect, a gap will appear when abutting, which will limit the insertion depth. The difference in shape forces the distinction between positive and negative poles, which has the effect of preventing mistakes.

[0028] After the contact piece and the matching part 7 are correctly connected, the insertion depth of the contact piece can push the insert block 406. The insert block 406 separates from the positioning groove 405 of the indicator post 402 and enters the storage groove 407 to compress the second spring 408. Since the insert block 406 is separated from the positioning groove 405, the indicator post 402 is no longer limited. The first spring 404 releases energy and resets from the compressed state, thereby driving a part of the indicator post 402 to extend out of the sliding groove 401. Finally, the bolt 3 is tightened completely to prevent the contact piece from loosening.

[0029] If the contact piece and the mating part 7 are misconnected, resulting in limited insertion depth, the indicator post 402 will not extend out of the sliding groove 401. The operator can determine the connection status of the positive and negative terminals by observing the state of the indicator post 402, without the need for instrument testing, which simplifies the maintenance process and improves work efficiency.

[0030] During the process of fully tightening bolt 3, the head of bolt 3 pushes wedge 12 into groove 10. At this time, the third spring 11 is compressed, and wedge 12 is not obstructed by the installation of bolt 3. After bolt 3 is fully tightened, the head of bolt 3 and wedge 12 are misaligned. At this time, the third spring 11 pushes wedge 12 out of groove 10, so that wedge 12 plays a limiting role on the head of bolt 3, which can prevent bolt 3 from loosening due to vibration.

[0031] When disassembly is required, push the wedge 12 into the groove 10 with one hand, and unscrew the bolt 3 with the other hand using a tool. Pull the positive and negative contacts out of the slot 8. The second spring 408 drives the insert 406 to extend part of the storage slot 407. At this time, the insert 406 abuts against the peripheral side of the indicator post 402. Then, press the indicator post 402 into the sliding groove 401. When the positioning groove 405 of the indicator post 402 is aligned with the insert 406, the second spring 408 causes the insert 406 to insert into the positioning groove 405, thereby locking the indicator post 402.

[0032] The remaining structure is the same as that in Example 1.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fault diagnosis device for the positive and negative terminal connection of a secondary gun probe thermocouple circuit, characterized in that: Includes a base (1), the base (1) having a threaded groove (2), the threaded groove (2) being connected to a bolt (3), and the base (1) being provided with an indicator component (4); The indicator component (4) includes a sliding groove (401), an indicator post (402) is slidably connected to the sliding groove (401), the indicator post (402) has a receiving groove (403), a first spring (404) is fixedly connected in the receiving groove (403), the first spring (404) is fixedly connected to the sliding groove (401), a positioning groove (405) is provided on the peripheral side of the indicator post (402), and an insert (406) is slidably connected to the positioning groove (405).

2. The fault diagnosis device for the positive and negative terminal connection of the thermocouple circuit of the auxiliary gun probe according to claim 1, characterized in that: The indicator component (4) also includes a storage slot (407), in which a second spring (408) is fixedly installed, and the second spring (408) is fixedly connected to the insert block (406).

3. The fault diagnosis device for the positive and negative terminal connection of the thermocouple circuit of the auxiliary gun probe according to claim 2, characterized in that: The outlet of the sliding groove (401) is provided with a constriction (5), the indicator post (402) is fixedly connected with a retaining ring (6), the indicator post (402) is slidably connected to the constriction (5), and the retaining ring (6) is slidably connected to the sliding groove (401).

4. The fault diagnosis device for the positive and negative terminal connection of the thermocouple circuit of the auxiliary gun probe according to claim 1, characterized in that: The shank of the bolt (3) is fixedly connected to a matching part (7).

5. The fault diagnosis device for the positive and negative terminal connection of the thermocouple circuit of the auxiliary gun probe according to claim 1, characterized in that: The base (1) has slots (8) and auxiliary slots (9), and several of the slots (8) are connected to the auxiliary slots (9). The threaded groove (2) is connected to the slots (8).

6. The fault diagnosis device for the positive and negative terminal connection of the thermocouple circuit of the auxiliary gun probe according to claim 5, characterized in that: The slot (8) has a groove (10), a third spring (11) is fixedly installed in the groove (10), and a wedge (12) is fixedly connected to the third spring (11). The wedge (12) is slidably connected to the groove (10).

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