High-sound-reduction-index coupling protection cover used in low-temperature environment

Abstract

The utility model relates to a high-sound-reduction-index coupler protection cover used in a low-temperature environment. A coupler protection cover used by a traditional gas turbine generator set is poor in sealing performance and can only meet the sound insulation index of 10-20 decibels, and due to the fact that sealing materials are not resistant to low temperature, the coupler protection cover cannot be used in the low-temperature environment. The device comprises a gas turbine side shield, a generator side shield, a low-temperature-resistant special-shaped double-pipe sound insulation sealing rubber strip, a gas turbine side low-temperature-resistant sealing rubber strip and a generator side low-temperature-resistant sealing rubber strip, a fastener and a low-temperature-resistant sealing rubber strip are used for fixedly connecting a gas turbine side shield and a gas turbine sound insulation box body, a generator side shield and an engine housing flange are fixedly connected, and a low-temperature-resistant special-shaped double-pipe sound insulation sealing rubber strip is used for sealing between the gas turbine side shield and the generator side shield. The coupling can be protected, meanwhile, the sound insulation effect is achieved, and the using requirement in the low-temperature environment is met.

Description

Technical Field

[0001] The utility model relates to a coupling protective cover with high sound insulation used in a low-temperature environment. Background Art

[0002] The coupling protection cover used in traditional gas turbine generator sets has poor sealing performance and can only meet the sound insulation requirement of 10-20 decibels. There are sound leakage points in the coupling area, which makes the overall sound insulation uncontrollable. In addition, the sealing material is not resistant to low temperatures, so it cannot be used in low-temperature environments. By using low-temperature resistant sealing strips and optimizing the sealing sound insulation structure, the sound insulation of the coupling area can be improved and the use requirements under low-temperature conditions can be met. Summary of the invention

[0003] The utility model aims to provide a coupling protective cover with high sound insulation for use in a low temperature environment.

[0004] The above-mentioned purpose is achieved through the following technical scheme: The utility model relates to a high sound insulation coupling protection cover for use in a low-temperature environment; its characteristics are: it includes a gas turbine side shield, a generator side shield, a low-temperature resistant special-shaped double-tube sound insulation sealing strip, a gas turbine side low-temperature resistant sealing strip, and a generator side low-temperature resistant sealing strip; fasteners and low-temperature resistant sealing strips are used to connect and fix the gas turbine side shield to the gas turbine sound insulation box, and the generator side shield is connected and fixed to the engine cover flange. The gas turbine side shield and the generator side shield are sealed with a low-temperature resistant special-shaped double-tube sound insulation sealing strip, which can realize the protection function of the coupling and play a sound insulation role at the same time.

[0005] The high sound insulation coupling protective cover for use in a low temperature environment: the gas turbine side protective cover is divided into a gas turbine side upper protective cover, a gas turbine side lower protective cover, and a low temperature resistant sealing strip; the generator side protective cover is divided into a generator side upper protective cover, a generator side lower protective cover, and a low temperature resistant sealing strip.

[0006] The high sound insulation coupling protective cover used in a low temperature environment: the upper protective cover on the gas turbine side and the lower protective cover on the gas turbine side are connected, fixed and sealed using fasteners and low temperature resistant sealing strips.

[0007] The high sound insulation coupling protective cover used in a low temperature environment: the gas turbine side protective cover is connected, fixed and sealed with the gas turbine sound insulation box by fasteners and gas turbine side low temperature resistant sealing strips.

[0008] The high sound insulation coupling protection cover used in a low temperature environment: the opening size of the connection position between the flange of the gas turbine side protection cover and the gas turbine sound insulation box is φ28mm, and the specification of the connecting fastener is M8, so that the coupling protection cover has radial installation adjustment space, and the adjustment amount is ±10mm.

[0009] The high sound insulation coupling protective cover for use in a low temperature environment: the gas turbine side upper protective cover and the gas turbine side lower protective cover are both composed of a three-layer structure, the outer layer is welded from an aluminum alloy outer plate, the middle is filled with aluminum silicate wool wrapped with high silica cloth, the inner layer is an aluminum alloy inner plate, and the inner plate and the outer plate are fixed by welding.

[0010] The high sound insulation coupling protective cover used in a low temperature environment: the low temperature resistant sealing strip is made of gas phase silica gel, which will not become brittle at low temperature under -60°C low temperature conditions and has good resilience and sealing properties, meeting the sealing requirements under low temperature conditions.

[0011] The high sound insulation coupling protective cover used in a low temperature environment: the generator side upper protective cover and the generator side lower protective cover are connected, fixed and sealed using fasteners and low temperature resistant sealing strips.

[0012] The high sound insulation coupling protective cover used in a low temperature environment: the generator side upper protective cover and the generator side lower protective cover adopt a single-layer structure, and the single layer is welded from stainless steel outer plates.

[0013] The high sound insulation coupling protection cover used in a low temperature environment: the opening size of the connection position between the flange of the generator side protection cover and the flange of the generator cover is φ28mm, and the specification of the connecting fastener is M8, so that the coupling protection cover has radial installation adjustment space, and the adjustment amount is ±10mm.

[0014] The high sound insulation coupling protective cover used in a low-temperature environment: the low-temperature resistant special-shaped sound insulation sealing strip is pasted in the installation groove of the generator side shield by adhesive, and the gas turbine side shield and the special-shaped sound insulation sealing strip are in a compression relationship to form a sealing structure.

[0015] The high sound insulation coupling protective cover for use in a low-temperature environment: the gas turbine side shield and the generator side shield are sealed with low-temperature resistant special-shaped sound insulation sealing strips, and the size of the generator side shield that penetrates deep into the gas turbine side shield has axial adjustment space, and the adjustment amount is ±10mm.

[0016] The high sound insulation coupling protective cover for use in a low-temperature environment: the low-temperature resistant sealing strips on the gas turbine side and the low-temperature resistant sealing strips on the generator side are made of gas phase silica gel. Under low temperature conditions of -60°C, they will not become low-temperature brittle and have good resilience and sealing properties, meeting the sealing requirements under low temperature conditions. Beneficial Effects

[0017] The high sound insulation coupling protection cover of the utility model is used in a low-temperature environment. Fasteners and low-temperature resistant sealing strips are used to connect and fix the gas turbine side cover with the gas turbine sound insulation box body, and the generator side cover is connected and fixed with the engine cover flange. The gas turbine side cover and the generator side cover are sealed with a low-temperature resistant special-shaped double-tube sound insulation sealing strip, which protects and soundproofs the coupling and meets the use requirements of the low-temperature environment.

[0018] The utility model discloses a high sound insulation coupling protection cover for use in a low temperature environment. The gas turbine side cover is made of aluminum alloy, the interlayer is filled with aluminum silicate wool wrapped with high silica cloth, and the generator side cover is made of stainless steel. It has the characteristics of protection, sound insulation, low temperature resistance, and simple structure.

[0019] The high sound insulation coupling protection cover used in a low temperature environment of the utility model has φ28mm round holes opened on the connection sides of the coupling protection cover with the generator cover and the gas turbine sound insulation box through the flanges on both sides of the coupling protection cover, and the specification of the connecting fasteners is M8, so that the coupling protection cover as a whole has a radial adjustment amount of ±10mm; the dimension of the generator side protection cover penetrating into the gas turbine side protection cover has an axial adjustment space of ±10mm; the coupling protection cover as a whole has an axial adjustment amount of ±10mm and a radial adjustment amount of ±10mm, which is convenient for installation during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the utility model.

[0021] Figure 2 It is a side view of the utility model.

[0022] Figure 3 It is a top view of the utility model.

[0023] Figure 4 yes Figure 2 AA section view.

[0024] Figure 5 yes Figure 4 A1 partial view.

[0025] Figure 6 yes Figure 4 Partial view of A2.

[0026] Figure 7 yes Figure 4 A3 partial view.

[0027] Figure 8 yes Figure 5 A4 partial view.

[0028] Fig. 9 yes Figure 1Partial view of view I.

[0029] Fig.10 yes Figure 1 Partial view of view II. DETAILED DESCRIPTION

[0030] Embodiment 1: The utility model relates to a high sound insulation coupling protection cover for use in a low temperature environment; the utility model is characterized in that: the high sound insulation coupling protection cover for use in a low temperature environment comprises a gas turbine side protection cover (1), a generator side protection cover (2), a low temperature resistant special-shaped double-tube sound insulation sealing strip (3), a gas turbine side low temperature resistant sealing strip (4), and a generator side low temperature resistant sealing strip (5); the gas turbine side protection cover (1) is connected and fixed to the gas turbine sound insulation box body by using a fastener (6) and a low temperature resistant sealing strip, the generator side protection cover (2) is connected and fixed to the engine cover flange, and the gas turbine side protection cover (1) and the generator side protection cover (2) are sealed by using a low temperature resistant special-shaped double-tube sound insulation sealing strip (3), so as to realize the protection function of the coupling, and the sound insulation reaches 40 decibels.

[0031] Embodiment 2: A high sound insulation coupling protective cover for use in a low temperature environment: The gas turbine side shield (1) is divided into a gas turbine side upper shield (1.1), a gas turbine side lower shield (1.2), and a low temperature resistant sealing strip 01 (1.3); the gas turbine side upper shield (1.1) and the gas turbine side lower shield (1.2) are connected, fixed and sealed using fasteners (6) and a low temperature resistant sealing strip 01 (1.3); after installation, the gas turbine side shield The cover (1) is connected, fixed and sealed to the gas turbine sound insulation box using fasteners (6) and a gas turbine side low-temperature resistant sealing strip (4); the generator side shield (2) is divided into a generator side upper shield (2.1), a generator side lower shield (2.2) and a low-temperature resistant sealing strip 02 (2.3); the generator side upper shield (2.1) and the generator side lower shield (2.2) are connected, fixed and sealed using fasteners (6) and a low-temperature resistant sealing strip 02 (2.3).

[0032] Embodiment 3: A high sound insulation coupling protection cover for use in a low temperature environment according to Embodiment 1: the flange of the gas turbine side protection cover (1) (where it is connected to the sound insulation box of the gas turbine) has an opening size of φ28mm, and the connecting fasteners (including bolts and nuts 6) have a specification of M8, so that the coupling protection cover has radial installation adjustment space, and the adjustment amount is ±10mm.

[0033] Example 4: A high sound insulation coupling protective cover for use in a low temperature environment according to Example 2: The gas turbine side upper shield (1.1) and the gas turbine side lower shield (1.2) are both composed of a three-layer structure, the outer layer is a 4mm thick aluminum alloy outer plate welded together, the middle is filled with a high-silica cloth wrapped aluminum silicate wool interlayer with a thickness of 80mm, the inner layer is a 1mm thick aluminum alloy inner plate, the inner plate and the outer plate are fixed by welding, and the sound insulation of this structure can reach 40dB (A).

[0034] Example 5: A high sound insulation coupling protective cover for use in a low temperature environment according to Example 2: The low temperature resistant sealing strip 01 (1.3) and the low temperature resistant sealing strip 02 (2.3) are made of gas phase silica gel. Under low temperature conditions of -60°C, they will not become brittle at low temperature and have good resilience and sealing properties, meeting the sealing requirements under low temperature conditions.

[0035] Embodiment 6: A high sound insulation coupling protective cover for use in a low temperature environment according to Embodiment 2: the generator side upper protective cover (2.1) and the generator side lower protective cover (2.2) adopt a single-layer structure, and the single layer is welded from a 4mm stainless steel outer plate. The sound insulation of this structure can reach 40dB(A).

[0036] Example 7: A high sound insulation coupling protection cover for use in a low temperature environment according to Example 1: the opening size of the connection position between the flange of the generator side shield (2) and the flange of the generator cover is φ28mm, and the specification of the connecting fastener (6) is M8, so that the coupling protection cover has radial installation adjustment space, and the adjustment amount is ±10mm.

[0037] Embodiment 8: A high sound insulation coupling protective cover for use in a low temperature environment according to Embodiment 1: The low temperature resistant special-shaped sound insulation sealing strip (3) is adhered to the installation groove of the generator side shield (2) using adhesive, and the gas turbine side shield (1) and the special-shaped sound insulation sealing strip are in a compression relationship to form a sealing structure. The sound insulation of this structure can reach 40dB (A).

[0038] Embodiment 9: A high sound insulation coupling protective cover for use in a low temperature environment according to Embodiment 1: a low temperature resistant special-shaped sound insulation sealing strip (3) is used to seal between the gas turbine side cover (1) and the generator side cover (2); the dimension of the generator side cover (2) penetrating into the interior of the gas turbine side cover (1) has an axial adjustment space, and the adjustment amount is ±10 mm.

[0039] Example 10: A high sound insulation coupling protective cover for use in a low temperature environment according to Example 1: The low temperature resistant sealing strip (4) on the gas turbine side and the low temperature resistant sealing strip (5) on the generator side are made of gas phase silica gel. Under low temperature conditions of -60°C, they will not become brittle at low temperatures and have good resilience and sealing properties, meeting the sealing requirements under low temperature conditions.

Claims

1. A high sound insulation coupling protective cover for use in low temperature environments, characterized by: The high sound insulation coupling protective cover for use in a low temperature environment comprises a gas turbine side protective cover (1), a generator side protective cover (2), a low temperature resistant special-shaped double-tube sound insulation sealing strip (3), a gas turbine side low temperature resistant sealing strip (4), and a generator side low temperature resistant sealing strip (5); the gas turbine side protective cover (1) is connected and fixed to the gas turbine sound insulation box body by using a fastener (6) and the low temperature resistant sealing strip, the generator side protective cover (2) is connected and fixed to the engine casing flange, and the low temperature resistant special-shaped double-tube sound insulation sealing strip (3) is used to seal between the gas turbine side protective cover (1) and the generator side protective cover (2), thereby realizing the protection function of the coupling and playing a sound insulation role at the same time.

2. According to the high sound insulation coupling protective cover used in low temperature environment of claim 1, it is characterized by: The gas turbine side shield (1) is divided into a gas turbine side upper shield (1.1), a gas turbine side lower shield (1.2), and a low-temperature resistant sealing rubber strip 01 (1.3); the generator side shield (2) is divided into a generator side upper shield (2.1), a generator side lower shield (2.2), and a low-temperature resistant sealing rubber strip 02 (2.3).

3. According to claim 2, a high sound insulation coupling protective cover for use in a low temperature environment is characterized in that: The gas turbine side upper shield (1.1) and the gas turbine side lower shield (1.2) are connected, fixed and sealed using fasteners (6) and low-temperature resistant sealing strips 01 (1.3).

4. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 1 is characterized in that: The gas turbine side shield is connected, fixed and sealed to the gas turbine sound insulation box using fasteners (6) and a gas turbine side low-temperature resistant sealing strip (4).

5. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 1 is characterized in that: The size of the opening at the connection position between the flange of the gas turbine side shield and the gas turbine sound insulation box is φ28mm, and the specification of the connecting fastener (6) is M8, so that the coupling protection cover has installation adjustment space in the radial direction, and the adjustment amount is ±10mm.

6. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 2 is characterized in that: The gas turbine side upper shield (1.1) and the gas turbine side lower shield (1.2) are both composed of a three-layer structure, wherein the outer layer (7) is formed by welding an aluminum alloy outer plate, the middle layer (8) is filled with aluminum silicate wool wrapped with high-silica cloth, and the inner layer (9) is an aluminum alloy inner plate, and the inner plate and the outer plate are fixed by welding.

7. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 2 is characterized in that: The low-temperature resistant sealing strip 01 (1.3) and the low-temperature resistant sealing strip 02 (2.3) are made of gas phase silica gel. Under low temperature conditions of -60°C, they will not become brittle and have good resilience and sealing properties, meeting the sealing requirements under low temperature conditions.

8. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 2 is characterized by: The generator side upper shield (2.1) and the generator side lower shield (2.2) are connected, fixed and sealed using fasteners (6) and low-temperature resistant sealing strips 02 (2.3).

9. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 2 is characterized in that: The generator side upper shield (2.1) and the generator side lower shield (2.2) adopt a single-layer structure, and the single layer is formed by welding stainless steel outer plates.

10. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 1, characterized in that: The size of the opening at the connection position between the flange of the generator side shield (2) and the flange of the generator housing is φ28mm, and the specification of the connecting fastener (6) is M8, so that the coupling protection cover has installation adjustment space in the radial direction, and the adjustment amount is ±10mm.

11. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 1, characterized in that: The low-temperature resistant special-shaped sound insulation sealing strip (3) is adhered to the installation groove of the generator side shield (2) using adhesive, and the gas turbine side shield (1) and the special-shaped sound insulation sealing strip are in a compression relationship to form a sealing structure.

12. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 1, characterized in that: The gas turbine side shield (1) and the generator side shield (2) are sealed by using a low-temperature resistant special-shaped sound insulation sealing strip (3), and the dimension of the generator side shield (2) penetrating into the gas turbine side shield (1) has an axial adjustment space, and the adjustment amount is ±10 mm.

13. The high sound insulation coupling protective cover for use in a low temperature environment according to claim 1, characterized in that: The gas turbine side low temperature resistant sealing strip (4) and the generator side low temperature resistant sealing strip (5) are made of gas phase silica gel. Under low temperature conditions of -60°C, they will not become brittle at low temperatures and have good resilience and sealing properties, thus meeting the sealing requirements under low temperature conditions.

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