Thermocouple replacement tooling

Abstract

The application provides a thermocouple replacement tool, which comprises a support frame, an extender and a sleeve. The support frame is used for being fixed to the riser pipe. One end of the extender is connected with the support frame. The sleeve is used for being clamped with the rod part on the lower side of the flange of the thermocouple. The sleeve is connected with the other end of the extender. When the extender is shortened, the sleeve is driven to pull out the thermocouple from the riser pipe. The application solves the problem that the existing replacement device is inconvenient for the cylinder and the flange connection of the thermocouple.

Description

Technical Field

[0001] This application relates to the technical field of metallurgical maintenance tooling, and in particular to a thermocouple replacement tooling. Background Technology

[0002] As the core equipment for coke production, temperature monitoring in the riser pipe area of ​​the hot coke oven is crucial. Due to the long-term effects of the high temperature of the coke oven (the outlet temperature of raw gas is typically 650-850℃) and the complex composition of the gas (containing carbon monoxide, tar, etc.), thermocouple materials are prone to aging and deterioration, such as brittle wires and decreased insulation performance, leading to reduced measurement accuracy. Temperature fluctuations and exceeding limits will accelerate this damage. Therefore, thermocouples need to be replaced regularly.

[0003] In existing thermocouple replacement devices, a cylinder is connected to the thermocouple, and then the cylinder, propelled by reverse-flowing air, pushes the thermocouple out. However, in temperature monitoring within the coke oven riser pipe area, the thermocouple is connected to the riser pipe short connector via a flange, making it inconvenient for the cylinder to connect directly to the thermocouple flange. Therefore, the existing replacement device suffers from the problem of inconvenient flange connection between the cylinder and the thermocouple. Utility Model Content

[0004] The purpose of this application is to provide a thermocouple replacement fixture to solve the problems of inconvenient cylinder and flange connection of thermocouple in existing replacement devices.

[0005] This application provides a thermocouple replacement fixture. The thermocouple is mounted on a riser pipe. The fixture includes a support frame, a telescopic joint, and a clamping sleeve. The support frame is used to fix the thermocouple to the riser pipe. One end of the telescopic joint is connected to the support frame. The clamping sleeve is used to engage with the rod portion under the flange of the thermocouple. The clamping sleeve is connected to the other end of the telescopic joint. When the telescopic joint retracts, it drives the clamping sleeve to pull the thermocouple out of the riser pipe.

[0006] Optionally, the support frame includes a first support member, a second support member, and a connecting member. The first support member is used to fix itself to the riser pipe. The second support member is used to fix itself to the riser pipe, and the second support member and the first support member are spaced apart. The connecting member is connected to the first support member and the second support member, and the connecting member is connected to one end of the telescopic device.

[0007] Optionally, the telescopic member is located between the first support member and the second support member.

[0008] Optionally, the ferrule includes a receiving groove for receiving the head of the thermocouple.

[0009] Optionally, the ferrule includes a groove that communicates with the receiving groove, and the groove is used to engage with the rod portion on the lower side of the flange of the thermocouple.

[0010] Optionally, the other end of the ferrule and the telescopic device are detachably connected.

[0011] Optionally, the telescopic device includes a fixed block and a pivot pin, the ferrule includes a lifting lug, and the pivot pin passes through the fixed block and the lifting lug.

[0012] Optionally, the fixing block includes a clearance groove, the lifting lug is embedded in the clearance groove, and the fixing block abuts against the sleeve.

[0013] Optionally, the ferrule includes a groove for engaging with the rod portion on the lower side of the thermocouple flange, wherein the axial direction of the lug and the opening of the groove are in the same direction.

[0014] Optionally, the ferrule includes a receiving groove for receiving the head of the thermocouple, the opening of the receiving groove having the same orientation as the opening of the ferrule.

[0015] The beneficial effects of this application are as follows: A support frame, an expansion joint, and a clamping sleeve are used. The support frame is used to fix the thermocouple to the riser pipe. One end of the expansion joint is connected to the support frame. The clamping sleeve is used to engage with the rod on the lower side of the thermocouple flange. The clamping sleeve is connected to the other end of the expansion joint. When the expansion joint shortens, it pulls the clamping sleeve out of the riser pipe. Because the expansion joint is connected to the rod on the lower side of the thermocouple flange by a clamping mechanism, the flange connection between the expansion joint and the thermocouple is more convenient.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the following describes the application in detail with reference to the preferred embodiments and accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the application of a thermocouple replacement fixture in one embodiment of this application;

[0018] Figure 2 This is a schematic diagram of a thermocouple applied to a riser tube in one embodiment of this application;

[0019] Figure 3 In one embodiment of this application, Figure 1 A magnified view from direction A;

[0020] Figure 4 This is a perspective view of the card sleeve in one embodiment of this application;

[0021] Figure 5This is a perspective view of the support frame in one embodiment of this application;

[0022] Figure 6 This is an exploded view of the pivot pin, sleeve, and fixing block in one embodiment of this application.

[0023] In the attached figures, the following labels are used:

[0024] 1. Ascending pipe

[0025] 10 Short connector

[0026] 2 Support frame

[0027] 20 First support component

[0028] 21 Second support component

[0029] 22 Connectors

[0030] 3. Expansion Joint

[0031] 30 body

[0032] 31 Fixed Block

[0033] 310 First perforation

[0034] 311 Clearance Groove

[0035] 32 shaft pins

[0036] 4 Card sleeves

[0037] 40 Top Plate

[0038] 41 Side panels

[0039] 42 base plate

[0040] 43. Hanging lugs

[0041] 430 Second perforation

[0042] 5. Thermocouples

[0043] 50 Thermocouple flange

[0044] C1 Receiving Tank

[0045] C2 slot Detailed Implementation

[0046] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0047] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the accompanying drawings and embodiments. To enable those skilled in the art to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0049] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] Please also refer to Figure 1 and Figure 2 This embodiment provides a thermocouple replacement fixture. Thermocouple 5 is disposed on riser pipe 1. The thermocouple replacement fixture includes a support frame 2, an expansion joint 3, and a clamping sleeve 4. The support frame 2 is used to fix it to riser pipe 1. One end of the expansion joint 3 is connected to the support frame 2. The clamping sleeve 4 is used to engage with the rod portion under the flange 50 of thermocouple 5. The clamping sleeve 4 is connected to the other end of the expansion joint 3. When the expansion joint 3 shortens, it drives the clamping sleeve 4 to pull the thermocouple 5 out of riser pipe 1. Because the expansion joint 3 is connected to the rod portion under the flange 50 of thermocouple 5 by a clamping method, the connection between the expansion joint 3 and the flange 50 of thermocouple 5 is more convenient.

[0051] like Figure 2As shown, the riser pipe 1 is a steel pipe. The rod of the thermocouple 5 is inserted into the short connector 10 of the riser pipe 1, and the flange 50 of the thermocouple 5 is exposed on the riser pipe 1 and is bolted to the flange of the short connector 10 on the riser pipe 1. Multiple thermocouples 5 are installed on the riser pipe 1. The support frame 2 is preferably made of steel. The bottom end of the support frame 2 is fixed to the outer surface of the riser pipe 1 by welding (e.g., spot welding). The support frame 2 is preferably a gantry frame. The support frame 2 is preferably arranged along an axis parallel to the thermocouples 5.

[0052] like Figure 1 As shown, riser pipe 1 is an auxiliary device installed on the top of the coke oven. It consists of a cylinder, a bridge pipe and a flap seat (water seal valve body). Its function is to discharge the raw coal gas and exhaust the crude coal gas (raw coal gas) in the carbonization chamber.

[0053] Please also refer to Figure 1 and Figure 3 Optionally, the expansion joint 3 can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder. The expansion joint 3 is preferably a double-acting hydraulic cylinder, connected to a hydraulic power unit via a pipe. The top end of the expansion joint 3 is connected to the support frame 2 by bolts or welding. The expansion joint 3 is preferably arranged axially parallel to the thermocouple 5.

[0054] Please also refer to Figure 3 and Figure 4 The ferrule 4 is made of steel. The ferrule 4 is preferably semi-cylindrical, comprising a top plate 40, side plates 41, and a bottom plate 42. The top plate 40, side plates 41, and bottom plate 42 are connected sequentially from top to bottom. The top plate 40 of the ferrule 4 is connected to the other end (e.g., the bottom end) of the expansion joint 3. When the thermocouple 5 is pulled out, the top surface of the bottom plate 42 abuts against the bottom surface of the flange 50 of the thermocouple 5. The connection method between the ferrule 4 and the other end of the expansion joint 3 will be described later in the embodiments.

[0055] Please also refer to Figure 3 and Figure 5 Optionally, the support frame 2 includes a first support member 20, a second support member 21, and a connector 22. The first support member 20 is used to fix it to the riser pipe 1. The second support member 21 is used to fix it to the riser pipe 1, and the second support member 21 and the first support member 20 are spaced apart. The connector 22 is connected to the first support member 20 and the second support member 21, and the connector 22 is connected to one end of the expansion joint 3. With this configuration, the support frame 2 has at least two connection points on the riser pipe 1, which not only makes the connection of the support frame 2 more stable, but also distributes the pressure of the support frame 2 on the riser pipe 1, preventing damage to the riser pipe 1 when the thermocouple 5 is removed.

[0056] like Figure 5As shown, the first support member 20 is preferably a rod made of angle steel. The bottom end of the first support member 20 is fixed to the outer surface of the riser pipe 1 by spot welding. The second support member 21 is preferably a rod made of angle steel. The length of the second support member 21 is the same as the length of the first support member 20. The length direction of the second support member 21 is the same as the length direction of the first support member 20. The bottom end of the second support member 21 is fixed to the outer surface of the riser pipe 1 by spot welding.

[0057] like Figure 5 As shown, the connector 22 is preferably a steel plate. Both ends of the connector 22 are connected to the top ends of the first support member 20 and the second support member 21, respectively. The connector 22 is preferably connected to the first support member 20 and the second support member 21 by welding. The top end of the expansion joint 3 is preferably fixed to the middle position of the connector 22 by welding or bolting.

[0058] like Figure 1 As shown, optionally, the expansion joint 3 is located between the first support member 20 and the second support member 21. This arrangement can distribute the force applied by the expansion joint 3 to the first support member 20 and the second support member 21, preventing the force applied by the support frame 2 to the riser pipe 1 from being too concentrated.

[0059] like Figure 3 As shown, optionally, the ferrule 4 includes a receiving groove C1 for accommodating the head of the thermocouple 5. This arrangement allows the central axis of the thermocouple 5 to be as close as possible to the central axis of the expansion joint 3 (ideally, they are coaxial), enabling the thermocouple 5 to be pulled vertically upwards and preventing it from bending during pull-out. The receiving groove C1 is preferably semi-cylindrical and forms the space enclosed by the top plate 40, side plate 41, and bottom plate 42. The head of the thermocouple 5 is the portion above the bottom surface of the upper flange 50 of the thermocouple 5.

[0060] like Figure 3 As shown, optionally, the ferrule 4 includes a groove C2, which is connected to a receiving groove C1. The groove C2 is used to engage with the rod portion under the flange 50 of the thermocouple 5. This arrangement allows the head of the thermocouple 5 to be inserted into the receiving groove C1 without obstruction. The groove C2 is cuboid in shape and is located on the base plate 42. The groove C2 penetrates the front side of the base plate 42. The width of the groove C2 is greater than or equal to the diameter of the rod portion under the flange 50 of the thermocouple 5. The width of the groove C2 is less than the diameter of the flange 50 of the thermocouple 5.

[0061] like Figure 1As shown, optionally, the other end of the ferrule 4 and the expansion joint 3 are detachably connected. The bottom end of the ferrule 4 and the expansion joint 3 are detachably connected. When removing the ferrule 4 from the thermocouple 5, the connection between the ferrule 4 and the expansion joint 3 can be disconnected first. When installing the ferrule 4 onto the thermocouple 5, the ferrule 4 and the expansion joint 3 can be left unconnected initially. Since the ferrule 4 and the expansion joint 3 are detachably connected, the ferrule 4 can be independently installed and removed from the thermocouple 5, facilitating the installation and removal of the ferrule 4.

[0062] like Figure 6 As shown, optionally, the expansion joint 3 includes a fixing block 31 and a shaft pin 32, and the retaining sleeve 4 includes a lifting lug 43. The shaft pin 32 passes through the fixing block 31 and the lifting lug 43. This arrangement allows for easy replacement of the shaft pin 32 if it is damaged. The expansion joint 3 also includes a body 30. The fixing block 31 is fixed to the bottom end of the body 30. The fixing block 31 consists of two semi-cylindrical blocks spaced apart. The fixing block 31 has a first through hole 310. The first through hole 310 penetrates the left and right sides of the fixing block 31.

[0063] Optional, such as Figure 6 As shown, the fixing block 31 is preferably made of steel. The axle pin 32 is cylindrical. The axle pin 32 passes through the first through hole 310. The diameter of the axle pin 32 is approximately the same as the diameter of the first through hole 310. The lifting lug 43 is a cuboid block with a semi-cylindrical surface, in which a second through hole 430 is provided. The lifting lug 43 is connected to the upper surface of the top plate 40. The axle pin 32 passes through the second through hole 430. The diameter of the axle pin 32 is approximately the same as the diameter of the second through hole 430.

[0064] Please also refer to Figure 1 and Figure 6 Optionally, the fixing block 31 includes a relief groove 311, with the lifting lug 43 embedded in the relief groove 311, and the fixing block 31 abutting against the ferrule 4. With this configuration, when pulling out the thermocouple 5, the fixing block 31 can stabilize the ferrule 4, avoiding lateral forces on the ferrule 4, thereby preventing the ferrule 4 from shaking and damaging the short connector 10 of the riser pipe 1 or causing the thermocouple 5 to bend.

[0065] Please also refer to Figure 1 and Figure 6 The clearance groove 311 is rectangular in shape and is enclosed by the bottom surface of the main body 30 and two semi-cylindrical blocks. The depth of the clearance groove 311 is equal to the height of the lifting lug 43. The length direction of the clearance groove 311 is perpendicular to the axial direction of the first through hole 310. After the shaft pin 32 passes through the first through hole 310 and the second through hole 430, the bottom surface of the fixing block 31 abuts against the top surface of the top plate 40.

[0066] like Figure 6As shown, optionally, the ferrule 4 includes a groove C2, which is used to engage with the rod portion under the flange 50 of the thermocouple 5. The axial direction of the lug 43 and the opening of the groove C2 are in the same direction. This arrangement ensures that the direction in which the pin 32 inserts into the lug 43 and the fixing block 31 is the same as the direction in which the thermocouple 5 engages with the groove C2, allowing the ferrule 4 to connect with the thermocouple 5 and the expansion joint 3 without reversing its orientation, thus improving the efficiency of ferrule 4 assembly and disassembly. The axial direction of the lug 43 is the same as the axial direction of the second through hole 430. The axial direction of the lug 43 and the opening of the groove C2 both face left.

[0067] like Figure 6 As shown, optionally, the ferrule 4 includes a receiving groove C1 for accommodating the head of the thermocouple 5. The opening of the receiving groove C1 faces the same direction as the opening of the ferrule C2. This arrangement allows the thermocouple 5 to be simultaneously installed and removed into both the ferrule C2 and the receiving groove C1, improving the efficiency of thermocouple 5 installation and removal. The opening of both the receiving groove C1 and the ferrule C2 faces left.

[0068] Please also refer to Figures 1 to 6 Instructions for using the thermocouple replacement tool:

[0069] Step 1: Remove the connecting bolts between the flange 50 of thermocouple 5 and the flange of the short connector 10 of riser pipe 1. Then, insert a pry bar into the gap between the two flanges and gradually pry them apart to create a suitable distance. Insert the base plate 42 of the ferrule 4 into the gap between the two flanges to tightly secure the flange 50 of thermocouple 5, forming a stable point of force.

[0070] Step 2: Install the expansion joint 3. Connect the lug 43 on the sleeve 4 to the fixing block 31 of the expansion joint 3 via the shaft pin 32, and check whether the shaft pin 32 is installed in place to ensure that the tension transmission structure is stable.

[0071] Step 3: Align the bottom of support frame 2 with riser pipe 1 and fix it to riser pipe 1 by welding. Then, connect the top of expansion joint 3 to support frame 2 to form a complete tension transmission system. For example, if expansion joint 3 has a range of 400mm and a rated load of 2 tons, check that all components are securely connected without loosening.

[0072] Step 4: Activate the expansion joint 3, causing it to retract. The pulling force of the expansion joint 3 acts directionally on the flange 50 of the thermocouple 5 through the shaft pin 32, lifting lug 43, and clamp 4. Under stable tension, the thermocouple 5 can overcome resistance such as tar adhesion and be smoothly pulled out from the riser pipe 1. After the current thermocouple 5 is pulled out, remove the support frame 2 and repeat the above steps to remove the next thermocouple 5.

[0073] The thermocouple replacement fixture provided in the embodiments of this application has been described in detail above. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application. All equivalent modifications or changes made in accordance with the spirit and technical concept of this application should still be covered by the claims of this application.

Claims

1. A thermocouple replacement fixture, wherein the thermocouple is disposed on a riser pipe, characterized in that, include: A support frame for fixing the riser pipe; An expansion joint, one end of which is connected to the support frame; as well as A ferrule is used to engage with the rod portion on the lower side of the flange of the thermocouple. The ferrule is connected to the other end of the telescopic device. When the telescopic device is shortened, it drives the ferrule to pull the thermocouple out of the riser tube.

2. The thermocouple replacement fixture according to claim 1, characterized in that, The support frame includes: A first support member is used to fix the riser pipe; A second support member, used for fixing to the riser pipe, is spaced apart from the first support member; and A connector is connected to the first support and the second support, and the connector is connected to one end of the telescopic device.

3. The thermocouple replacement fixture according to claim 2, characterized in that, The telescopic member is located between the first support member and the second support member.

4. The thermocouple replacement fixture according to claim 1, characterized in that, The ferrule includes a receiving groove for receiving the head of the thermocouple.

5. The thermocouple replacement fixture according to claim 4, characterized in that, The ferrule includes a groove that communicates with the receiving groove. The groove is used to engage with the rod portion on the lower side of the flange of the thermocouple.

6. The thermocouple replacement fixture according to claim 1, characterized in that, The other end of the ferrule and the telescopic device are detachably connected.

7. The thermocouple replacement fixture according to claim 6, characterized in that, The telescopic device includes a fixed block and a pivot pin, the ferrule includes a lifting lug, and the pivot pin passes through the fixed block and the lifting lug.

8. The thermocouple replacement fixture according to claim 7, characterized in that, The fixing block includes a clearance groove, the lifting lug is embedded in the clearance groove, and the fixing block abuts against the sleeve.

9. The thermocouple replacement fixture according to claim 7, characterized in that, The ferrule includes a groove for engaging with the rod portion on the lower side of the thermocouple flange, and the axial direction of the lug is the same as the opening direction of the groove.

10. The thermocouple replacement fixture according to claim 9, characterized in that, The ferrule includes a receiving groove for receiving the head of the thermocouple, and the opening of the receiving groove faces the same direction as the opening of the ferrule.

Images