Heat accumulating catalytic oxidation device heat couple protection sleeve

Abstract

The utility model belongs to the technical field of thermocouple protection sleeve for regenerative catalytic oxidation device, especially relates to a thermocouple protection sleeve for regenerative catalytic oxidation device. Including the sleeve body, the tip of sleeve body is provided with thermocouple, the tail end of sleeve body is provided with wire connector, and wire connector and thermocouple are electrically connected through wire, the sleeve body is sleeved with threaded ring, and the threaded ring is sleeved with connecting sleeve, the tail end of threaded ring is hinged with several locking blocks, the tail end of connecting sleeve is provided with lock groove, the sleeve body is sleeved with nut, the sleeve body is provided with external thread that is screwed with nut, and the nut is fixed with push ring that pushes locking block to embed in lock groove. The utility model pushes the ring through nut, and all locking blocks are locked in lock groove by push ring, and the relative rotation between threaded ring and connecting sleeve is locked, so as to prevent the threaded ring and connecting sleeve from loosening, thereby improving the reliability and sealing property of sleeve body.

Description

Technical Field

[0001] This utility model belongs to the technical field of thermocouple protection sleeves for regenerative catalytic oxidation devices, and in particular relates to a thermocouple protection sleeve for regenerative catalytic oxidation devices. Background Technology

[0002] In regenerative catalytic oxidation (RCO) units, the high-temperature operating conditions inside the reaction chamber require real-time and precise monitoring via thermocouples. Thermocouples are typically installed on the side wall of the reaction chamber via protective sheaths, with threaded connections being a common installation method due to their simple structure and low cost.

[0003] However, during operation, the RCO device inevitably experiences continuous mechanical vibration. This vibrational environment can easily lead to microscopic relative slippage between the threaded parts, causing the preload to gradually decrease and resulting in loosening. Once the threaded connection loosens, its sealing performance will significantly decrease, which may not only lead to the leakage of harmful gases from inside the reaction chamber, posing safety and environmental risks, but also affect the accuracy of temperature measurement and interfere with the internal chemical reaction balance due to the infiltration of external cold air. Utility Model Content

[0004] The purpose of this invention is to provide a thermocouple protection sleeve for a regenerative catalytic oxidation device, which overcomes the influence of vibration environment and improves the reliability and sealing of the protection sleeve to a certain extent.

[0005] The thermocouple protection sleeve for the regenerative catalytic oxidation device includes a sleeve body, a thermocouple at the tip of the sleeve body, and a wire connector at the tail end of the sleeve body. The wire connector and the thermocouple are electrically connected by a wire. A threaded ring is fitted on the sleeve body, and a connecting sleeve with a threaded engagement is fitted on the threaded ring. The connecting sleeve is installed on the side wall of the reaction chamber of the regenerative catalytic oxidation device. Several locking blocks are hinged to the tail end of the threaded ring. A locking groove is opened at the tail end of the connecting sleeve corresponding to the locking blocks. A nut is fitted on the sleeve body, and an external thread with a threaded engagement is opened on the sleeve body corresponding to the nut. A push ring is fixed on the nut to push the locking blocks into the locking groove.

[0006] The nut drives the push ring to push all the locking blocks, so that they are all embedded in the locking groove, completing the locking between the threaded ring and the connecting sleeve. This prevents long-term vibration from causing a slight relative rotation between the two, which could loosen the seal and reduce its sealing performance.

[0007] Furthermore, the locking blocks consist of four blocks that are evenly spaced on the circumference of the threaded ring.

[0008] The four locking blocks not only save costs but also reliably lock the threaded ring and the connecting sleeve together.

[0009] Furthermore, the tail end of the threaded ring is provided with a mounting groove for hinged locking blocks.

[0010] The threaded ring is hinged in the mounting groove to prevent the hinged end of the threaded ring from protruding from the outer wall of the threaded ring, thus avoiding interference between the threaded ring and the connecting sleeve when the threaded ring enters the connecting sleeve.

[0011] Furthermore, a sealing ring is provided between the threaded ring and the connecting sleeve.

[0012] The sealing ring enhances the seal between the connecting sleeve and the threaded ring. The sealing ring is made of a high-temperature resistant and corrosion-resistant material.

[0013] Furthermore, a junction box is fixed to the tail end of the sleeve body, and a through hole communicating with the inside of the sleeve body is opened at the bottom of the junction box, and the wire connector is installed in the junction box.

[0014] The junction box provides some protection for the wire connectors, and the sealed connection between the wire connectors and the inner wall of the junction box can significantly improve the sealing performance.

[0015] Furthermore, the sleeve body is fitted with an inner liner to protect the wires, and the inner liner is made of ceramic material.

[0016] Ceramic inner liner provides better protection for the inner liner.

[0017] Furthermore, a fixing block is fixed on the outer wall of the sleeve body, the distance between the fixing block and the end of the external thread is greater than the thickness of the nut, and a groove for the fixing block to be inserted is provided on the nut.

[0018] The nut disengages from the external thread and slides towards the end of the sleeve body, allowing the fixing block to enter the slot. At this time, rotating the nut can drive the entire sleeve body to rotate. By using a wrench, the threaded ring can be screwed into the connecting sleeve with less effort. When the nut disengages from the fixing block and is threadedly engaged with the external thread, rotating the nut pushes the push ring closer to the end of the threaded ring until it pushes the locking block into the locking groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a nut to push a push ring, which in turn pushes all locking blocks into the locking groove, locking the relative rotation between the threaded ring and the connecting sleeve and preventing the threaded ring from coming loose from the connecting sleeve, thereby improving the reliability and sealing of the sleeve body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle; The components in the diagram are named as follows: 1. Sleeve body; 2. Thermocouple; 3. Wire; 4. Threaded ring; 5. Wire connector; 6. Junction box; 7. Fixing block; 8. Inner bushing; 9. Nut; 10. Push ring; 11. Connecting sleeve; 12. Sealing ring; 13. Locking block. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0022] Example The thermocouple protection sleeve for a regenerative catalytic oxidation device described in this embodiment, such as... Figures 1 to 3 As shown, the device includes a sleeve body 1, with a thermocouple 2 installed at its tip inside the sleeve body 1, and a wire connector 5 installed at its tail end. The wire connector 5 is electrically connected to the thermocouple 2 via a wire 3. The sleeve body 1 serves as the core support component, with the thermocouple 2 installed at its top to sense the temperature within the reaction chamber. The thermocouple 2 is electrically connected to the wire connector 5 located at the tail end of the sleeve via the wire 3.

[0023] In order to protect the conductor 3 in high-temperature environments, the sleeve body 1 is fitted with an inner liner 8 to protect the conductor 3. The inner liner 8 is made of ceramic material.

[0024] A junction box 6 is fixed to the tail end of the sleeve body 1. The bottom of the junction box 6 has a through hole communicating with the interior of the sleeve body 1. The wire connector 5 is installed inside the junction box 6. The through hole and the wire 3 should be sealed to improve overall airtightness. Sealant is filled between the inner wall of the junction box 6 and the wire connector 5 to further enhance airtightness. The wire connector 5 can be a waterproof cable connector from an existing product.

[0025] A threaded ring 4 is fitted onto the casing body 1, and a connecting sleeve 11, which is threadedly fitted onto the threaded ring 4, is fitted onto the threaded ring 4. The connecting sleeve 11 is installed on the side wall of the reaction chamber of the regenerative catalytic oxidation device, and is pre-fixed to the mounting hole of the reaction chamber by welding or other means. The outer side wall of the threaded ring 4 has an external thread, and the inner side wall of the connecting sleeve 11 has an internal thread that is threadedly fitted to the external thread.

[0026] By rotating the sleeve body 1, the threaded ring 4 is screwed into the connecting sleeve 11, thus completing the initial installation and fixation.

[0027] A sealing ring 12 is provided between the threaded ring 4 and the connecting sleeve 11. In order to further ensure the sealing performance during the initial installation, a sealing ring 12 is provided at the joint between the threaded ring 4 and the connecting sleeve 11. The sealing ring 12 is made of high temperature and corrosion resistant materials such as graphite or stainless steel.

[0028] Four locking blocks 13 are hinged to the tail end of the threaded ring 4, and the four locking blocks 13 are evenly distributed on the circumference of the threaded ring 4. The tail end of the threaded ring 4 has a mounting groove for hinged locking blocks 13. The hinged end of the locking block 13 is mounted in the mounting groove via a hinge shaft and can swing within a certain range. The locking blocks 13 can be housed in the mounting groove, preventing interference between the threaded ring 4 and the connecting sleeve 11 when the threaded ring 4 is inserted into the connecting sleeve 11.

[0029] A locking groove is provided at the tail end of the connecting sleeve 11 corresponding to the locking block 13. A nut 9 is fitted onto the sleeve body 1. The nut 9 has an external thread on the sleeve body 1 that engages with it. The nut 9 engages with the external thread on the sleeve body 1 through its internal thread. The external thread is only provided for one section and is located on the right side of the tail end of the threaded ring 4. A push ring 10 is fixed on the nut 9 to push the locking block 13 into the locking groove. The push ring 10 is fixedly installed on the side of the nut 9 near the threaded ring 4. The center line of the push ring 10 is on the same straight line as the center line of the nut 9. The outer wall of the push ring 10 is beveled to engage with the locking block 13, pushing it to swing towards the locking groove and finally embed it into the locking groove.

[0030] like Figure 3 As shown, after the threaded ring 4 is fully screwed into and tightened into the connecting sleeve 11, rotating the nut 9 clockwise causes it to move along the external thread on the sleeve body 1 towards the threaded ring 4, thus driving the push ring 10 forward as well. The end face of the push ring 10 then simultaneously presses against all the locking blocks 13, causing them to rotate around the hinge point towards the locking groove, until its free end is firmly embedded in the locking groove at the tail end of the connecting sleeve 11. This mechanical interference eliminates the possibility of relative rotation between the threaded ring 4 and the connecting sleeve 11, thereby achieving an anti-loosening effect.

[0031] A fixing block 7 is fixed to the outer wall of the sleeve body 1. The distance between the fixing block 7 and the end of the external thread is greater than the thickness of the nut 9. The nut 9 has a groove for the fixing block 7 to be engaged. For ease of installation, a fixing block 7 is also fixed to the sleeve body 1. The distance between the fixing block 7 and the end of the external thread on the sleeve body 1 is slightly greater than the thickness of the nut 9. At the same time, the nut 9 has a groove that matches the shape of the fixing block 7. During initial installation, the nut 9 can be completely unscrewed from the external thread section and slid along the sleeve body 1 towards the end, so that the fixing block 7 is engaged in the groove of the nut 9. At this time, clamping and rotating the nut 9 with a wrench will cause the entire sleeve body 1 and the threaded ring 4 to rotate together through the fixing block 7, thus making it easier to screw the threaded ring 4 into the connecting sleeve 11. After installation and tightening, the nut 9 is slid back to the external thread section and tightened, so that the push ring 10 pushes the locking block 13 into the locking groove, thus achieving the purpose of one screw serving two purposes.

[0032] In practical use: First, the connecting sleeve 11 is fixed to the reaction chamber wall. Then, using the cooperation of the nut 9 and the fixing block 7, the threaded ring 4 is screwed into the connecting sleeve 11 and tightened. Subsequently, the nut 9 is rotated to advance on the external thread of the sleeve body 1, and the push ring 10 forces the locking block 13 into the locking groove of the connecting sleeve 11, completing the mechanical locking. This structure can effectively resist the continuous vibration generated during the operation of the RCO device, prevent the threaded connection from loosening, and thus improve the reliability and sealing of traditional threaded fixing.

Claims

1. A thermocouple protection sleeve for a regenerative catalytic oxidation device, comprising a sleeve body (1), a thermocouple (2) disposed at the tip of the sleeve body (1), and a wire connector (5) disposed at the tail end of the sleeve body (1), wherein the wire connector (5) and the thermocouple (2) are electrically connected by a wire (3), characterized in that: The sleeve body (1) is fitted with a threaded ring (4), and a connecting sleeve (11) is fitted on the threaded ring (4) in a threaded fit with it. The connecting sleeve (11) is installed on the side wall of the reaction chamber of the regenerative catalytic oxidation device. Several locking blocks (13) are hinged to the tail end of the threaded ring (4). A locking groove is opened at the tail end of the connecting sleeve (11) corresponding to the locking block (13). A nut (9) is fitted on the sleeve body (1). An external thread is opened on the sleeve body (1) corresponding to the nut (9) in a threaded fit with the nut (9). A push ring (10) is fixed on the nut (9) to push the locking block (13) into the locking groove.

2. The thermocouple protection sleeve for the regenerative catalytic oxidation device according to claim 1, characterized in that: The locking blocks (13) consist of four blocks that are evenly spaced on the circumference of the threaded ring (4).

3. The thermocouple protection sleeve for the regenerative catalytic oxidation device according to claim 1, characterized in that: The threaded ring (4) has a mounting groove at its tail end for hinged locking block (13).

4. The thermocouple protection sleeve for the regenerative catalytic oxidation device according to claim 1, characterized in that: A sealing ring (12) is provided between the threaded ring (4) and the connecting sleeve (11).

5. The thermocouple protection sleeve for the regenerative catalytic oxidation device according to claim 1, characterized in that: The tail end of the sleeve body (1) is fixed with a wire box (6). The bottom of the wire box (6) has a through hole that communicates with the inside of the sleeve body (1). The wire connector (5) is installed inside the wire box (6).

6. The thermocouple protection sleeve for the regenerative catalytic oxidation device according to claim 1, characterized in that: The sleeve body (1) is fitted with an inner liner (8) to protect the conductor (3), and the inner liner (8) is made of ceramic material.

7. The thermocouple protection sleeve for the regenerative catalytic oxidation device according to claim 1, characterized in that: A fixing block (7) is fixed on the outer wall of the sleeve body (1). The distance between the fixing block (7) and the end of the external thread is greater than the thickness of the nut (9). The nut (9) has a slot for the fixing block (7) to be inserted.

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