Flange thermal tightening control equipment with temperature feedback

Abstract

This utility model provides a flange hot-tightening control device with temperature feedback, relating to the technical field of flange connection equipment. It includes a clamp head with a groove on its front surface, a connecting block welded to its rear surface, and an annular track groove on its outer circumference. In this utility model, a temperature sensor on the surface of the front pressure plate collects the flange's temperature data in real time and transmits the data to a controller on the rear baffle. The controller processes the temperature signal using a built-in algorithm and displays the current temperature value on a screen in real time, providing data for the hot-tightening operation. This solves the problems of existing flange hot-tightening control devices, which struggle to accurately control the degree of hot tightening and lack a real-time temperature feedback mechanism. These devices cannot accurately understand the actual temperature changes of the flange in real time, making it difficult to ensure the flange remains in the optimal connection state throughout the temperature change process and achieving precise hot-tightening control.

Description

Technical Field

[0001] This utility model relates to the technical field of flange connection equipment, and in particular to flange thermal tightening control equipment with temperature feedback. Background Technology

[0002] In many industrial sectors, such as petrochemicals, power, heat transmission, and aerospace, flange connections are a very common and critical connection method, widely used for connecting pipes to pipes, pipes to equipment, and equipment to equipment. In actual working conditions, many flange connections need to operate in environments with high temperature, high pressure, or large temperature variations. Flanges and their connecting bolts will experience thermal expansion due to temperature changes. If the bolts are tightened according to the standard at room temperature, the thermal expansion of the flange will reduce the original preload of the bolts as the temperature rises.

[0003] Therefore, it is necessary to control the hot tightening of flanges, but existing flange hot tightening equipment still has the following two shortcomings in use: Firstly, it is difficult to accurately control the degree of hot tightening. Different flange materials, specifications, and specific working conditions will affect the optimal torque value required for hot tightening. It is difficult for operators to accurately adapt to various complex situations based solely on experience, which often leads to problems of insufficient or excessive hot tightening.

[0004] Secondly, the lack of a real-time temperature feedback mechanism means that traditional methods cannot accurately understand the actual temperature changes of the flange during the hot tightening process. Consequently, they cannot adjust the hot tightening torque in a timely manner based on the dynamic temperature changes, making it difficult to ensure that the flange remains in the optimal connection state throughout the entire temperature change process and thus failing to achieve precise hot tightening control. Utility Model Content

[0005] This utility model relates to a flange thermal tightening control device with temperature feedback, which solves the problems of existing flange thermal tightening control devices that are difficult to accurately control the degree of thermal tightening and lack a real-time temperature feedback mechanism. These devices cannot accurately understand the actual temperature changes of the flange in real time, and cannot ensure that the flange is always in the best connection state throughout the temperature change process, thus failing to achieve precise thermal tightening control.

[0006] This utility model provides a flange thermal tightening control device with temperature feedback, specifically including: a clamp head; The front surface of the card head is provided with a card groove, the rear end face of the card head is welded with a connecting block, and the outer circumference of the card head is provided with an annular track groove. A fixing block has a slot on its front end face, a connecting block is snapped into the slot, and a connecting cylinder is installed on each of the left and right end faces of the fixing block. The surface of the connecting cylinder has a first connecting groove. A rocker arm, wherein a connecting screw is fixedly installed on the inner end surface of the rocker arm, and the connecting screw is threaded into the first connecting groove on the surface of the connecting cylinder; The placement plate has an arc-shaped upper surface and a sliding block is fixedly installed on the lower surface of the placement plate. The sliding block is slidably engaged in the annular track groove on the outer end face of the card head. The front pressure plate has a circular plate structure. A temperature sensor is fixedly installed on the front surface of the front pressure plate, and a connecting rod is fixedly installed on the rear surface of the front pressure plate. The rear baffle is fixedly installed on the rear end surface of the connecting rod. A controller is fixedly installed on the rear end surface of the rear baffle. The controller has a display screen on its surface and is electrically connected to the temperature sensor on the surface of the front pressure plate.

[0007] Furthermore, a rubber strip is installed in a ring around the outer circumference of the rocker arm, and a connecting hole is provided on the outer end surface of the rocker arm, with a thread on the inner end surface of the connecting hole.

[0008] Furthermore, the surface of the placement plate is provided with a through hole, and four limiting strips are installed in a ring shape on the inner end face of the through hole. The connecting rod is slidably engaged in the through hole on the surface of the placement plate.

[0009] Furthermore, the outer circumference of the connecting rod is provided with four limiting grooves, which are arranged in a ring structure. The limiting strip on the inner end surface of the through hole is engaged in the limiting groove on the surface of the connecting rod.

[0010] Furthermore, a connecting spring is provided on the outer end face of the connecting rod, and the connecting spring is located between the placement plate and the front pressure plate.

[0011] Furthermore, three cover plates are fixedly installed on the outer end face of the front pressure plate, and magnets are installed on the front surface of the cover plates.

[0012] This utility model provides a flange thermal tightening control device with temperature feedback, which has the following beneficial effects: 1. The outer end face of the front pressure plate is equipped with three cover plates in a ring shape. The surface of the cover plates is equipped with three magnets. The three magnets are attracted to the flange surface, so that the temperature sensor is tightly attached to the flange, ensuring the accuracy of temperature detection. At the same time, it can also fix the front pressure plate, so that the front pressure plate can remain stable when the clamp is rotated.

[0013] 2. A connecting rod is installed on the rear end face of the front pressure plate. The connecting rod passes through the through hole of the placement plate. The limiting strip in the through hole cooperates with the limiting groove on the surface of the connecting rod to restrict the circumferential rotation of the connecting rod and ensure stable contact between the front pressure plate and the flange. During operation, the temperature sensor on the surface of the front pressure plate collects the temperature data of the flange in real time and transmits the data to the controller on the rear baffle. The controller processes the temperature signal through the built-in algorithm and displays the current temperature value on the display screen in real time, providing data basis for hot tightening operation.

[0014] 3. A connecting cylinder is installed at each end of the fixing block. The surface of the connecting cylinder has a first connecting groove and a thread. A connecting screw is installed on the inner end surface of the rocker arm. The worker can thread the connecting screw into the first connecting groove. The outer end surface of the rocker arm has a connecting hole with a thread inside. The worker can thread the connecting screw on the inner end surface of another rocker arm into the connecting hole on the surface of this rocker arm, thus connecting the two rockers together. This makes it easier for the worker to tighten the bolts.

[0015] 4. The connecting spring outside the connecting rod is located between the placement plate and the front pressure plate. It compensates for minor unevenness on the flange surface through elastic buffering, ensuring the detection stability of the temperature sensor. The controller, based on the real-time temperature feedback from the temperature sensor and the preset temperature-torque correspondence, prompts the operator with the required tightening torque on the display screen. The operator can adjust the rotation amplitude of the rocker arm according to the prompt to achieve precise hot tightening based on temperature feedback, avoiding problems such as insufficient or excessive bolt preload caused by temperature changes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached diagram: Figure 1 An exploded view of the overall device of this utility model is shown; Figure 2 A cross-sectional view of the rocker arm structure of this utility model is shown; Figure 3 A schematic diagram of the connection structure between the card head and the fixing block of this utility model is shown; Figure 4 A schematic cross-sectional view of the card head structure of this utility model is shown; Figure 5 A schematic diagram of the placement plate, connecting rod, and rear baffle of this utility model is shown. Figure 6A schematic diagram of the connection structure between the front pressure plate and the cover plate of this utility model is shown.

[0019] List of reference numerals in the attached diagram: 1. Card head; 101. Card slot; 102. Annular track groove; 103. Connecting block; 2. Fixing block; 201. Slot; 3. Connecting cylinder; 301. First connecting groove; 4. Rocker arm; 401. Connecting screw; 402. Connecting hole; 403. Rubber strip; 5. Placement plate; 501. Sliding block; 502. Through hole; 5021. Limiting strip; 6. Front pressure plate; 601. Temperature sensor; 7. Connecting rod; 701. Limiting groove; 8. Rear baffle; 801. Controller; 9. Connecting spring; 10. Cover plate; 1001. Magnet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example 1: Please refer to Figures 1 to 6 : This utility model proposes a flange thermal tightening control device with temperature feedback, including: a clamp 1; The front surface of the card head 1 is provided with a card groove 101, the rear surface of the card head 1 is welded with a connecting block 103, and the outer circumference of the card head 1 is provided with an annular track groove 102. The fixing block 2 has a slot 201 on its front end face, and the connecting block 103 is snapped into the slot 201. A connecting cylinder 3 is installed on the left and right end faces of the fixing block 2, and a first connecting groove 301 is opened on the surface of the connecting cylinder 3. The rocker arm 4 has a connecting screw 401 fixedly installed on its inner end surface. The connecting screw 401 is threaded into the first connecting groove 301 on the surface of the connecting cylinder 3. The upper end face of the placement plate 5 is an arc-shaped structure, and the lower end face of the placement plate 5 is fixedly installed with a sliding block 501. The sliding block 501 is slidably locked in the annular track groove 102 on the outer end face of the clamping head 1. The front pressure plate 6 has a circular plate structure. A temperature sensor 601 is fixedly installed on the front surface of the front pressure plate 6, and a connecting rod 7 is fixedly installed on the rear surface of the front pressure plate 6. The rear baffle 8 is fixedly installed on the rear end surface of the connecting rod 7. The rear end surface of the rear baffle 8 is fixedly installed with a controller 801. The surface of the controller 801 is provided with a display screen. The controller 801 is electrically connected to the temperature sensor 601 on the surface of the front pressure plate 6.

[0022] The rocker arm 4 has a rubber strip 403 installed in a ring around its outer circumference. The outer end surface of the rocker arm 4 has a connecting hole 402, and the inner end surface of the connecting hole 402 has a thread. During use, the rubber strip 403 on the surface of the rocker arm 4 increases the grip friction and prevents slippage during operation.

[0023] The surface of the placement plate 5 has a through hole 502. The inner end face of the through hole 502 is equipped with four limiting strips 5021 in a ring shape. The connecting rod 7 is slidably locked in the through hole 502 on the surface of the placement plate 5. The outer circumference of the connecting rod 7 has four limiting grooves 701. The four limiting grooves 701 are arranged in a ring structure. The limiting strips 5021 on the inner end face of the through hole 502 are locked in the limiting grooves 701 on the surface of the connecting rod 7. In use, the limiting strips 5021 in the through hole 502 cooperate with the limiting grooves 701 on the surface of the connecting rod 7 to restrict the circumferential rotation of the connecting rod 7 and ensure stable contact between the front pressure plate 6 and the flange.

[0024] The connecting rod 7 has a connecting spring 9 on its outer end face. The connecting spring 9 is located between the placement plate 5 and the front pressure plate 6. During use, the connecting spring 9 on the outside of the connecting rod 7 is located between the placement plate 5 and the front pressure plate 6. It compensates for minor unevenness on the flange surface through elastic buffering, thus ensuring the detection stability of the temperature sensor 601.

[0025] Among them, three cover plates 10 are fixedly installed on the outer end face of the front pressure plate 6. Magnets 1001 are installed on the front surface of the cover plate 10. During use, the three magnets 1001 are attracted to the flange surface, so that the temperature sensor 601 is tightly attached to the flange, ensuring the accuracy of temperature detection. At the same time, the front pressure plate 6 can also be fixed, so that the front pressure plate 6 can remain stable when the clamp 1 is rotated.

[0026] The working principle of this embodiment: In this invention, the head of the flange bolt to be tightened is first inserted into the slot 101 at the front end of the clamp 1. A stable connection with the bolt is achieved through the fitting structure of the slot 101. Three cover plates 10 are annularly mounted on the outer end face of the front pressure plate 6. Three magnets 1001 are mounted on the surface of the cover plates 10, adhering to the flange surface. This ensures that the temperature sensor 601 is tightly attached to the flange, guaranteeing accurate temperature detection. Simultaneously, the front pressure plate 6 is fixed, allowing it to remain stable when the clamp 1 rotates. A connecting rod 7 is mounted on the rear end face of the front pressure plate 6. The connecting rod 7 passes through the through hole 502 of the placement plate 5. A limiting strip 502 within the through hole 502... 1. The limiting groove 701 on the surface of the connecting rod 7 restricts the circumferential rotation of the connecting rod 7, ensuring stable contact between the front pressure plate 6 and the flange. During operation, the temperature sensor 601 on the surface of the front pressure plate 6 collects the temperature data of the flange in real time and transmits the data to the controller 801 on the rear baffle 8. The controller 801 processes the temperature signal through a built-in algorithm and displays the current temperature value on the display screen in real time, providing data basis for hot tightening operation. A connecting cylinder 3 is installed at each end of the fixing block 2. The surface of the connecting cylinder 3 is provided with a first connecting groove 301 and a thread. A connecting screw 401 is installed on the inner end surface of the rocker arm 4. The worker can connect the connecting screw 401. The rocker arm 4 is threaded into the first connecting groove 301, and a connecting hole 402 is provided on the outer end surface of the rocker arm 4. The connecting hole 402 is threaded inside. The worker can thread the connecting screw 401 on the inner end surface of another rocker arm 4 into the connecting hole 402 on the surface of this rocker arm 4, thereby connecting the two rocker arms 4 together. This makes it easier for the worker to tighten the bolts. When the worker rotates the rocker arm 4, it can drive the fixing block 2 and the chuck 1 to rotate synchronously, thereby driving the flange bolts to tighten through the chuck 101. The rubber strip 403 on the surface of the rocker arm 4 increases the grip friction and prevents slippage during operation. The connecting hole 402 at the outer end can be connected to an extension rod to adapt to high torque requirements. In the tightening scenario, during the tightening process, the clamp 1 rotates continuously, while the front pressure plate 6 is fixed to the surface of the flange, ensuring that the position of the placement plate 5 does not change. The connecting spring 9 outside the connecting rod 7 is located between the placement plate 5 and the front pressure plate 6, and compensates for minor unevenness on the flange surface through elastic buffering, ensuring the detection stability of the temperature sensor 601. Based on the real-time temperature feedback from the temperature sensor 601 and the preset temperature-torque correspondence, the controller 801 prompts the operator with the required tightening torque through the display screen. The operator can adjust the rotation amplitude of the rocker arm 4 according to the prompts to achieve precise thermal tightening based on temperature feedback, avoiding problems such as insufficient or excessive bolt preload caused by temperature changes.

Claims

1. A flange thermal tightening control device with temperature feedback, characterized in that, Includes: a clamping head (1), the front end surface of which has a clamping groove (101), the rear end surface of which is welded with a connecting block (103), and the outer circumference of which has an annular track groove (102); a fixing block (2), the front end surface of which has a slot (201), the connecting block (103) being engaged in the slot (201), and a connecting cylinder (3) being installed on the left and right ends of the fixing block (2), the surface of which has a first connecting groove (301); a rocker arm (4), the inner end surface of which is fixedly installed with a connecting screw (401), the connecting screw (401) being threaded into the first connecting groove (301) on the surface of the connecting cylinder (3); and a placement plate (5). The upper end face of the placement plate (5) is an arc-shaped structure, and a sliding block (501) is fixedly installed on the lower end face of the placement plate (5). The sliding block (501) is slidably locked in the annular track groove (102) on the outer end face of the card head (1). The front pressure plate (6) is a circular plate structure. A temperature sensor (601) is fixedly installed on the front end surface of the front pressure plate (6), and a connecting rod (7) is fixedly installed on the rear end surface of the front pressure plate (6). The rear baffle (8) is fixedly installed on the rear end surface of the connecting rod (7), and a controller (801) is fixedly installed on the rear end surface of the rear baffle (8). The surface of the controller (801) is provided with a display screen, and the controller (801) is electrically connected to the temperature sensor (601) on the surface of the front pressure plate (6).

2. The flange thermal tightening control device with temperature feedback according to claim 1, characterized in that, The rocker arm (4) has a rubber strip (403) installed in a ring around its outer circumference. A connecting hole (402) is provided on the outer end surface of the rocker arm (4), and a thread is provided on the inner end surface of the connecting hole (402).

3. The flange thermal tightening control device with temperature feedback according to claim 1, characterized in that, The surface of the placement plate (5) is provided with a through hole (502), and four limiting strips (5021) are installed in a ring shape on the inner end face of the through hole (502). The connecting rod (7) is slidably locked in the through hole (502) on the surface of the placement plate (5).

4. The flange thermal tightening control device with temperature feedback according to claim 1, characterized in that, The connecting rod (7) has four limiting grooves (701) on its outer circumference. The four limiting grooves (701) are arranged in a ring structure. The limiting strip (5021) on the inner end surface of the through hole (502) is engaged in the limiting groove (701) on the surface of the connecting rod (7).

5. The flange thermal tightening control device with temperature feedback according to claim 1, characterized in that, The outer end face of the connecting rod (7) is provided with a connecting spring (9), which is located between the placement plate (5) and the front pressure plate (6).

6. The flange thermal tightening control device with temperature feedback according to claim 1, characterized in that, Three cover plates (10) are fixedly installed on the outer end face of the front pressure plate (6), and magnets (1001) are installed on the front end surface of the cover plates (10).

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