A detachable thermal insulation layer structure for a steam turbine

Abstract

This utility model provides a detachable insulation layer structure for steam turbines, relating to the technical field of insulation layer structures. The utility model includes two semi-circular ring frames, both ends of which are fixedly connected by screws. An insulation layer is installed on the inner wall of each semi-circular ring frame. The inner and outer layers of the insulation layer are rock wool board and aluminum foil, respectively. An auxiliary device is provided on the inner side of each semi-circular ring frame. This auxiliary device uses two rubber plates with adjustable deformation to provide auxiliary sealing between the two semi-circular ring frames and the steam turbine. By using these rubber plates and compressing them, the rubber plates deform until their outer surfaces completely abut against the outer surfaces of both the semi-circular ring frames and the steam turbine. This allows the rubber rings to fill the gaps between the semi-circular ring frames and the steam turbine, providing auxiliary sealing and ensuring the insulation structure has good insulation performance.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation layer structure technology, and in particular to a detachable thermal insulation layer structure for steam turbines. Background Technology

[0002] The thermal insulation layer structure for steam turbines is a multi-layer composite structure designed to reduce heat loss, ensure safe operation of equipment, and improve energy efficiency. Its core is to achieve multiple functions such as heat insulation, fire prevention, moisture resistance, and wear resistance through the combination of different materials.

[0003] To facilitate easy disassembly of the insulation layer structure for steam turbines during actual use, the insulation layer structure is usually designed as two semi-circular rings and connected by screws and other accessories. However, gaps may exist between the insulation structure and the steam turbine due to incompatibility or other issues, which can lead to a decrease in the insulation performance of the insulation structure. Utility Model Content

[0004] This utility model proposes a detachable insulation layer structure for steam turbines to solve the problem that gaps may exist between the insulation structure and the steam turbine due to incompatibility, which may lead to a deterioration in the insulation performance of the insulation structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a detachable insulation layer structure for a steam turbine, comprising two semi-circular ring frames, both ends of which are fixedly connected by screws. An insulation layer is installed on the inner wall of the semi-circular ring frames, the inner layer and outer layer of which are rock wool board and aluminum foil, respectively. An auxiliary device is provided on the inner side of the semi-circular ring frames, and the auxiliary device provides auxiliary sealing between the two semi-circular ring frames and the steam turbine by setting two rubber plates that can adjust the degree of deformation.

[0006] The effect achieved by the above components is as follows: by setting up a rubber plate and squeezing the rubber plate, the rubber plate is deformed until the outer surface of the rubber plate is completely in contact with the outer surface of the semi-circular ring frame and the turbine. Then the rubber ring can fill the gap between the semi-circular ring frame and the turbine, playing an auxiliary sealing role, thereby ensuring that the insulation structure has relatively good insulation performance.

[0007] Preferably, the auxiliary device includes a rubber plate, which is arc-shaped and disposed inside the semi-circular ring frame. Bending plates are provided on both sides of the rubber plate, and the bending plates are slidably installed inside the semi-circular ring frame. The rubber plate is made of fluororubber and has a hollow structure.

[0008] The effect achieved by the above components is as follows: pushing the two bending plates causes them to move toward the rubber plate, and the two bending plates will squeeze the rubber plate, causing the hollow rubber plate to deform toward the turbine until the outer surface of the rubber plate abuts against the outer surface of the semi-circular ring frame and the turbine. Then the rubber ring can fill and assist in sealing the gap between the semi-circular ring frame and the turbine.

[0009] Preferably, rectangular rods are fixedly installed on the outer surfaces of both bent plates, and the same rectangular tube is slidably installed on the outer surfaces of the two rectangular rods.

[0010] The effect achieved by the above components is that, by setting up rectangular rods and rectangular tubes, when the bending plate is pushed to move inside the semi-circular frame, it will drive the rectangular rods to slide synchronously on the inner wall of the rectangular tubes, thereby making the bending plate more stable during the movement.

[0011] Preferably, bolts are symmetrically threaded onto one side of the rectangular tube.

[0012] The effect achieved by the above components is as follows: by rotating the bolt, one end of the bolt passes through the inner wall of the rectangular tube until one end of the bolt abuts against one side of the rectangular rod, the bolt can fix the rectangular rod and the rectangular tube, thereby fixing the bent plate. This helps to prevent the bent plate from shifting and causing the two bent plates to loosen the pressure on the rubber plate.

[0013] Preferably, a rubber strip is adhered to the inner wall of one side of the rectangular rod, and the bolt is located on one side of the rubber strip.

[0014] The effect achieved by the above-mentioned components is that by setting the rubber strip, one side of the rectangular rod can be replaced to abut against one end of the bolt, and the friction between the bolt and the rectangular rod can be increased, making the bolt more secure in fixing the rectangular rod and the rectangular tube.

[0015] Preferably, a silicone strip is fixedly installed at one end of the bending plate, and one side of each of the two silicone strips is fixedly installed on both sides of the rubber plate.

[0016] The effect achieved by the above-mentioned components is that by setting a silicone strip to replace one end of the bending plate in contact with one side of the rubber plate, the rubber plate can be protected, which helps to prevent the bending plate from excessively contacting the hollow rubber plate and causing damage to the rubber plate.

[0017] Preferably, springs are symmetrically fixedly installed on the side of the bent plate and the semi-circular ring frame that are close to each other, by setting the springs.

[0018] The effect achieved by the above components is as follows: when the bending plate is pushed down, the bending plate will compress the spring, causing the spring to deform. When the insulation structure needs to be disassembled, the bolts fixing the rectangular rod and the rectangular tube are removed, the spring will reset and automatically drive the bending plate away from the rubber plate. The rubber plate will reset and no longer abut against the outer surface of the turbine, which facilitates the quick disassembly and installation of the semi-circular ring frame.

[0019] Preferably, a round rod is inserted into the inner wall of the spring, one end of the round rod is fixedly installed on one side of the semi-circular ring frame, and the bending plate is slidably installed on the outer surface of the two round rods.

[0020] The effect achieved by the above components is that by setting a round rod, the round rod can limit and guide the spring, which helps to prevent the spring from bending during deformation.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, a rubber plate is provided and squeezed to deform it until the outer surface of the rubber plate is in complete contact with the outer surface of the semi-circular ring frame and the turbine. The rubber ring can then fill the gap between the semi-circular ring frame and the turbine, playing an auxiliary sealing role, thereby ensuring that the insulation structure has relatively good insulation performance. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the auxiliary device of this utility model;

[0025] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0026] Figure 4 This utility model Figure 2 A magnified structural diagram at point B.

[0027] Legend: 1. Semicircular ring frame; 2. Insulation layer; 3. Auxiliary device; 31. Rubber plate; 32. Bending plate; 33. Rectangular rod; 34. Rectangular tube; 35. Bolt; 36. Rubber strip; 37. Silicone strip; 38. Spring; 39. Round rod. Detailed Implementation

[0028] Example 1, referring to Figures 1-3As shown, this embodiment discloses a detachable insulation layer structure for a steam turbine, including two semi-circular ring frames 1. Both ends of the two semi-circular ring frames 1 are fixedly connected by screws. An insulation layer 2 is installed on the inner wall of the semi-circular ring frame 1. The inner layer and outer layer of the insulation layer 2 are rock wool board and aluminum foil, respectively. An auxiliary device 3 is provided on the inner side of the semi-circular ring frame 1. The auxiliary device 3 provides auxiliary sealing between the two semi-circular ring frames 1 and the steam turbine by setting two rubber plates 31 that can adjust the degree of deformation. By setting the rubber plates 31 and squeezing the rubber plates 31, the rubber plates 31 deform until the outer surface of the rubber plates 31 abuts against the outer surface of the semi-circular ring frame 1 and the outer surface of the steam turbine. Then the rubber ring can provide auxiliary sealing between the semi-circular ring frame 1 and the steam turbine, thereby ensuring that the insulation structure has good insulation performance.

[0029] Reference Figure 2 and Figure 3 As shown, the auxiliary device 3 includes a rubber plate 31, which is arc-shaped and located inside the semi-circular frame 1. Bending plates 32 are provided on both sides of the rubber plate 31, and these bending plates 32 are slidably mounted inside the semi-circular frame 1. The rubber plate 31 is made of fluororubber and has a hollow structure. Pushing the two bending plates 32 causes them to move towards the rubber plate 31, compressing it and causing the hollow rubber plate 31 to deform towards the turbine until its outer surface meets the semi-circular frame 1. The outer surfaces of the circular frame 1 and the turbine are in contact, so the rubber ring can fill and assist in sealing the gap between the semi-circular frame 1 and the turbine. Rectangular rods 33 are fixedly installed on the outer surfaces of the two bent plates 32, and the same rectangular cylinder 34 is slidably installed on the outer surfaces of the two rectangular rods 33. By setting the rectangular rods 33 and the rectangular cylinder 34, when the bent plate 32 is pushed to move inside the semi-circular frame 1, it will drive the rectangular rods 33 to slide synchronously on the inner wall of the rectangular cylinder 34, thereby making the bent plate 32 more stable during the movement.

[0030] Reference Figure 2 and Figure 3 As shown, bolts 35 are symmetrically threaded onto one side of the rectangular tube 34. By rotating the bolts 35, one end of the bolt 35 passes through the inner wall of the rectangular tube 34 until it abuts against one side of the rectangular rod 33. The bolts 35 can then fix the rectangular rod 33 and the rectangular tube 34, thereby fixing the bent plate 32. This helps prevent the bent plate 32 from shifting and causing the two bent plates 32 to loosen the pressure on the rubber plate 31. A rubber strip 36 is adhered to the inner wall of one side of the rectangular rod 33. The bolts 35 are located on one side of the rubber strip 36. By setting the rubber strip 36, it can replace one side of the rectangular rod 33 to abut against one end of the bolt 35, and increase the friction between the bolt 35 and the rectangular rod 33, making the fixation between the rectangular rod 33 and the rectangular tube 34 by the bolts 35 more stable.

[0031] Reference Figure 2 and Figure 4 As shown, a silicone strip 37 is fixedly installed at one end of the bending plate 32. One side of each of the two silicone strips 37 is fixedly installed on both sides of the rubber plate 31. By setting the silicone strips 37, one end of the bending plate 32 is used to abut against one side of the rubber plate 31, which can protect the rubber plate 31 and help prevent the bending plate 32 from excessively bending the hollow rubber plate 31, thus preventing the rubber plate 31 from being damaged.

[0032] Reference Figure 2 and Figure 4 As shown, springs 38 are symmetrically fixedly installed on the side of the bending plate 32 and the semi-circular ring frame 1 that are close to each other. By setting springs 38, when the bending plate 32 is pushed down, the bending plate 32 will compress the springs 38, causing the springs 38 to deform. When the insulation structure needs to be disassembled, the bolts 35 fixing the rectangular rod 33 and the rectangular tube 34 are removed, and the springs 38 will reset and automatically drive the bending plate 32 away from the rubber plate 31. The rubber plate 31 will reset and no longer abut against the outer surface of the turbine, which facilitates the quick disassembly and installation of the semi-circular ring frame 1. A round rod 39 is inserted into the inner wall of the spring 38. One end of the round rod 39 is fixedly installed on one side of the semi-circular ring frame 1. The bending plate 32 is slidably installed on the outer surface of the two round rods 39. By setting the round rods 39, the round rods 39 can limit and guide the springs 38, which helps to prevent the springs 38 from bending during deformation.

[0033] Working principle: Pushing the two bending plates 32 causes them to move towards the rubber plate 31. Both bending plates 32 compress the spring 38, causing it to deform. This deforms the spring 38 and drives the rectangular rod 33 to slide synchronously on the inner wall of the rectangular cylinder 34. Simultaneously, the L-shaped plate causes the silicone strip 37 to compress the rubber plate 31, causing the hollow rubber plate 31 to deform towards the turbine until the outer surface of the rubber plate 31 abuts against both the semi-circular ring 1 and the outer surface of the turbine. Then, the bolt 35 is rotated so that one end of the bolt 35 passes through the inner wall of the rectangular cylinder 34 until one end of the bolt 35 abuts against the rubber strip 36 on one side of the rectangular rod 33. When the bolt 35 is turned in the opposite direction, it can fix the rectangular rod 33 and the rectangular tube 34, and thus fix the bent plate 32. This helps to prevent the bent plate 32 from shifting and causing the two bent plates 32 to loosen the pressure on the rubber plate 31. The rubber ring can fill and assist in sealing the gap between the semicircular ring frame 1 and the turbine. When the bolt 35 is turned in the opposite direction, the bolt 35 is released from fixing the rectangular rod 33 and the rectangular tube 34. The spring 38 will then reset and automatically drive the bent plate 32 away from the rubber plate 31. The rubber plate 31 will reset and no longer abut against the outer surface of the turbine, which facilitates the quick disassembly and installation of the semicircular ring frame 1.

Claims

1. A detachable thermal insulation layer (2) structure for steam turbine, comprising two half circular ring frames (1), characterized in that: Both ends of the two semicircular ring frames (1) are fixedly connected by screws. The inner wall of the semicircular ring frame (1) is equipped with a heat insulation layer (2). The inner and outer layers of the heat insulation layer (2) are rock wool board and aluminum foil, respectively. An auxiliary device (3) is provided on the inner side of the semicircular ring frame (1). The auxiliary device (3) provides auxiliary sealing between the two semicircular ring frames (1) and the steam turbine by setting two rubber plates (31) that can adjust the degree of deformation.

2. The detachable insulation layer (2) structure for a steam turbine according to claim 1, characterized in that: The auxiliary device (3) includes a rubber plate (31), which is arc-shaped and is located on the inner side of the semi-circular frame (1). Both sides of the rubber plate (31) are provided with bending plates (32), which are slidably installed on the inner side of the semi-circular frame (1). The rubber plate (31) is made of fluororubber and has a hollow structure.

3. The detachable insulation layer (2) structure for a steam turbine according to claim 2, characterized in that: A rectangular rod (33) is fixedly installed on the outer surface of both of the two bent plates (32), and the same rectangular tube (34) is slidably installed on the outer surface of the two rectangular rods (33).

4. The detachable insulation layer (2) structure for a steam turbine according to claim 3, characterized in that: Bolts (35) are symmetrically threaded onto one side of the rectangular tube (34).

5. The detachable insulation layer (2) structure for a steam turbine according to claim 4, characterized in that: A rubber strip (36) is bonded to the inner wall of one side of the rectangular rod (33), and the bolt (35) is located on one side of the rubber strip (36).

6. The detachable insulation layer (2) structure for a steam turbine according to claim 2, characterized in that: A silicone strip (37) is fixedly installed at one end of the bending plate (32), and one side of each of the two silicone strips (37) is fixedly installed on both sides of the rubber plate (31).

7. The detachable insulation layer (2) structure for a steam turbine according to claim 2, characterized in that: Springs (38) are symmetrically fixed on the side of the bent plate (32) and the semi-circular ring frame (1) that are close to each other.

8. The detachable insulation layer (2) structure for a steam turbine according to claim 7, characterized in that: A round rod (39) is inserted into the inner wall of the spring (38). One end of the round rod (39) is fixedly installed on one side of the semi-circular frame (1). The bent plate (32) is slidably installed on the outer surface of the two round rods (39).

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