Steam turbine soft insulation jacket

Abstract

The utility model discloses a soft thermal insulation jacket for a steam turbine, comprising a detachable thermal insulation layer (1), wherein the detachable thermal insulation layer (1) comprises a first flexible ceramic nanofiber blanket (4), a second flexible ceramic nanofiber blanket (5) and a silicone cloth (6) which are arranged in sequence from the inside to the outside, and the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6) are provided with a docking mechanism in the circumferential direction, and the positions of the docking mechanisms are staggered. The utility model has the advantage of good thermal insulation effect.

Description

Technical Field

[0001] The utility model relates to a thermal insulation jacket for a steam turbine, in particular to a soft thermal insulation jacket for a steam turbine. Background Art

[0002] A steam turbine is a thermal engine device that converts steam energy into mechanical energy. Its main function is to convert thermal energy into mechanical energy. During the use of a steam turbine, a heat preservation device is often used for heat preservation. The heat preservation device can insulate the steam turbine, reduce the heat loss of the steam turbine, and keep the internal temperature of the steam turbine at a high level, thereby improving the thermal effect of the steam turbine, and can reduce the condensation of the steam turbine, prevent greater harm to the metal, and prevent the steam turbine from scalding the staff, which is safe. At present, there is a problem of large heat dissipation at the joint of the insulation sleeve, which affects the insulation effect of the insulation sleeve. Utility Model Content

[0003] The utility model aims to provide a soft heat-insulating jacket for a steam turbine, which has the advantage of good heat-insulating effect.

[0004] The technical solution of the utility model: a soft thermal insulation jacket of a steam turbine comprises a detachable thermal insulation layer, wherein the detachable thermal insulation layer comprises a first flexible ceramic nanofiber blanket, a second flexible ceramic nanofiber blanket and a silicone cloth which are arranged in sequence from the inside to the outside; the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth are provided with docking mechanisms in the circumferential direction, and the positions of the docking mechanisms are staggered with each other.

[0005] In the aforementioned soft thermal insulation jacket of the steam turbine, the thickness of the edges of the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth continuously decreases as they move away from the center, and the sum of the thicknesses at both ends of the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth is the same as the thickness in the middle of the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth, and Velcro is provided on the connecting surfaces of the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth.

[0006] In the aforementioned soft thermal insulation jacket of the steam turbine, the docking mechanism comprises a buckle arranged at one circumferential end of the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth, and a hook assembly arranged at the other circumferential end of the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth, a draw tape is provided on one side of the buckle, and a positioning bolt corresponding to the draw tape is provided on one side of the hook assembly and the buckle.

[0007] In the aforementioned soft thermal insulation jacket for steam turbine, the hook assembly comprises a fixing seat, a ratchet is arranged in the fixing seat, a pawl corresponding to the ratchet is arranged on one side of the ratchet, a coaxially arranged elastic belt is arranged on one side of the ratchet, and a hook is arranged at one end of the elastic belt.

[0008] Compared with the prior art, the utility model has the following advantages:

[0009] 1. The present application forms a multi-layer thermal insulation structure by using a first flexible ceramic nanofiber blanket, a second flexible ceramic nanofiber blanket and a silicone cloth, which has a good thermal insulation effect, and the docking positions are staggered, which is beneficial to reduce heat loss;

[0010] 2. The present application uses a docking mechanism to enable the first flexible ceramic nanofiber blanket, the second flexible ceramic nanofiber blanket and the silicone cloth to be quickly installed, and the length of the elastic band can be adjusted through the cooperation of the ratchet and the pawl, making the combination of the hook and the buckle more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the docking mechanism of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the hook assembly of the utility model.

[0014] The markings in the accompanying drawings are: 1-removable insulation layer, 2-removable protective layer, 3-connecting piece, 4-first flexible ceramic nanofiber blanket, 5-second flexible ceramic nanofiber blanket, 6-silicone cloth, 7-pull buckle, 8-hook assembly, 9-pull strap, 10-positioning bolt, 11-Velcro, 12-fixed seat, 13-ratchet, 14-pawl, 15-elastic band, 16-hook. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0016] Embodiment. A steam turbine soft thermal insulation jacket is composed of Figure 1-3 As shown, it includes a detachable thermal insulation layer 1, and the detachable thermal insulation layer 1 includes a first flexible ceramic nanofiber blanket 4, a second flexible ceramic nanofiber blanket 5 and a silicone cloth 6 which are arranged in sequence from the inside to the outside. The first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6 are provided with docking mechanisms in the circumferential direction, and the positions of the docking mechanisms are staggered with each other.

[0017] The thickness of the edges of the first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6 decreases continuously away from the center, and the sum of the thicknesses at both ends of the first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6 is the same as the thickness in the middle of the first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6, and Velcro 11 is provided on the connecting surface of the first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6.

[0018] The docking mechanism includes a buckle 7 arranged at one end of the first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6, and a hook assembly 8 arranged at the other end of the first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6. A drawstring 9 is provided on one side of the buckle 7, and a positioning bolt 10 corresponding to the drawstring 9 is provided on one side of the hook assembly 8 and the buckle 7.

[0019] The hook assembly 8 includes a fixing seat 12, a ratchet 13 is provided in the fixing seat 12, a pawl 14 corresponding to the ratchet 13 is provided on one side of the ratchet 13, a coaxially arranged elastic band 15 is provided on one side of the ratchet 13, and a hook 16 is provided at one end of the elastic band 15.

[0020] Working principle of the present application: When installing the present application, the first flexible ceramic nanofiber blanket 4 is first wrapped on the outside of the turbine. Since the volume of the turbine will change due to temperature changes during operation, the present application adopts a hook 16 with an elastic band 15 to cooperate with the buckle 7 to achieve quick connection, and the elastic band 15 can be adjusted by cooperating with the ratchet 13 and the pawl 14, so that when the hook 16 is connected to the buckle 7, the elastic band is in a stretched state, and by adjusting the length of the elastic band, the elastic band can be prevented from being too tight or too loose, affecting the life of the elastic band and the stability of the installation of the first flexible ceramic nanofiber blanket 4, and further locking is achieved by bypassing the positioning bolts 10 in sequence through the pull belt 9. Then, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6 are installed in sequence. The first flexible ceramic nanofiber blanket 4 and the second flexible ceramic nanofiber blanket 5 are made of flexible ceramic nanofibers on the market, have good high temperature resistance and can fit well to the outer surface of the turbine. The silicone cloth can withstand high temperature and withstand greater pressure to support the detachable protective layer 2. Velcro 11 is provided on the connecting surfaces of the first flexible ceramic nanofiber blanket 4, the second flexible ceramic nanofiber blanket 5 and the silicone cloth 6, and the Velcro 11 is used to stably connect the three.

Claims

1. Soft thermal insulation jacket for steam turbine, characterized by: The invention comprises a detachable thermal insulation layer (1), wherein the detachable thermal insulation layer (1) comprises a first flexible ceramic nanofiber blanket (4), a second flexible ceramic nanofiber blanket (5) and a silicone cloth (6) which are arranged in sequence from the inside to the outside, and the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6) are provided with docking mechanisms in the circumferential direction, and the positions of the docking mechanisms are staggered with each other.

2. The soft thermal insulation jacket for steam turbine according to claim 1, characterized in that: The thickness of the edges of the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6) decreases continuously in the direction away from the center, and the sum of the thicknesses at both ends of the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6) is the same as the thickness in the middle of the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6), and Velcro (11) is provided on the connecting surfaces of the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6).

3. The soft thermal insulation jacket for steam turbine according to claim 1, characterized in that: The docking mechanism comprises a buckle (7) arranged at one circumferential end of the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6), and a hook assembly (8) arranged at the other circumferential end of the first flexible ceramic nanofiber blanket (4), the second flexible ceramic nanofiber blanket (5) and the silicone cloth (6), a drawstring (9) is arranged on one side of the buckle (7), and a positioning bolt (10) corresponding to the drawstring (9) is arranged on one side of the hook assembly (8) and the buckle (7).

4. The soft thermal insulation jacket for steam turbine according to claim 3, characterized in that: The hook assembly (8) comprises a fixing seat (12), a ratchet (13) is arranged in the fixing seat (12), a pawl (14) corresponding to the ratchet (13) is arranged on one side of the ratchet (13), a coaxially arranged elastic band (15) is arranged on one side of the ratchet (13), and a hook (16) is arranged at one end of the elastic band (15).

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