Machining method for inner-layer gasket of compressor and electric protection structure of compressor

Abstract

The invention belongs to the technical field of electrical protection design, and relates to a machining method for an inner-layer gasket of a compressor and an electrical protection structure of the compressor. A weather-resistant sealant with excellent physical performance is adopted to form an inner-layer gasket according to the contour of the protective cover through multiple times of forming and processing. The machining method of the inner-layer gasket of the compressor has four electrical protection effects: after wiring of the compressor is completed, the protective cover has waterproof and flame-retardant effects, seawater is prevented from being directly poured to the wiring position, and first electrical protection is formed. The inner-layer gasket is perfectly matched with a gap between the compressor and the protective cover through multiple times of forming, seawater is prevented from permeating into a wiring position under the capillary action, and second electrical protection is formed. After inerting treatment, the binding post of the protective cover is in an inerting environment and does not make direct contact with oxygen and water, and third electrical protection is formed. And the weather-resistant sealant is coated on the outer surface of the inner-layer gasket, so that the protection of the inner-layer gasket is enhanced, and fourth electrical protection is formed.

Description

Technical Field

[0001] This invention belongs to the field of electrical protection design technology, and relates to a method for processing the inner gasket of a compressor and an electrical protection structure for the compressor. Background Technology

[0002] As a widely used power device in industrial fields, the electrical protection of the compressor's terminal structure is crucial for its normal operation. The inner gasket, as an important component of the compressor's electrical protection system, directly affects the compressor's electrical protection effectiveness and service life through its sealing performance and quality. Traditional compressor inner gaskets often use simple, mass-produced rubber flat gaskets. The high salinity and chemicals of seawater corrode the rubber, causing molecular chain breakage and degradation, thus reducing the gasket's performance. Simultaneously, temperature fluctuations in the marine environment and prolonged exposure to high temperatures cause thermo-oxidative aging of the rubber, resulting in surface cracking, hardening, and decreased mechanical properties. Furthermore, factors such as seawater swelling and mechanical vibration can easily lead to sealing failure. Therefore, it is necessary to improve the reliability of the compressor's electrical protection structure through improvements in materials, structure, and processing methods. Summary of the Invention

[0003] Purpose of the invention It can meet the marine operating environment and testing conditions, and while maintaining the stable performance of the air conditioning unit, it strengthens the electrical protection structure of the compressor and reinforces the structure of parts that are prone to electrical protection failure.

[0004] Technical solution A method for processing an inner gasket of a compressor includes the following steps: Step 1, Material Selection; Step 2, preparation process: maintenance and cleaning of the compressor; Step 3: Initial molding of the inner gasket; Step 4, semi-cured; Step 5, groove carving; Step 6, secondary curing; Step 7, Assembly; Step 8, vacuuming; Step 9, inertization; Step 10, Application.

[0005] Further, in step 1, material selection: a single-component weather-resistant sealant is selected.

[0006] Step 2 Preparation: After confirming that the compressor wiring is complete, clean the compressor and protective cover surfaces in an environment with a temperature of 15-35℃ and a relative humidity of 55%-75%.

[0007] Step 3: Initially form the inner gasket. Place the protective cover correctly on the compressor surface. Apply weather-resistant sealant to the compressor surface using a glue gun according to the outline of the protective cover to form the inner gasket. Ensure that the sealant is applied evenly and fully to avoid trapping air. Remove the protective cover.

[0008] Step 4 Semi-curing: In an environment with an ambient temperature of 25℃ and a relative humidity of 50%, let the weather-resistant sealant inner gasket coated on the compressor surface, along with the compressor, stand for 12 hours to cure, ensuring that the sealant does not flow, is not sticky, and has initially cured.

[0009] Step 5: Grooving: The retaining stud is fixed to the compressor surface and, together with the screw, is used to secure the protective cover to the compressor surface. Install the protective cover onto the surface of the inner gasket of the pre-cured weather-resistant sealant. Tighten the screw to half the thread length of the retaining stud to secure the protective cover to a certain degree, ensuring that the inner gasket surface is grouted with a sealing groove under the pressure of the protective cover's edge, and that the sealing groove perfectly matches the contour of the protective cover.

[0010] Step 6: Curing: Keep the screws tightened to half the length of the stud thread to ensure the protective cap and weather-resistant sealant remain in the pre-tightened state. Lower the ambient temperature to 20°C and increase the relative humidity to 55%, then continue curing for 24 hours to complete the curing process.

[0011] Step 7 Assembly: Apply thread sealant evenly to the half of the untightened thread length of the fixing stud, then tighten the screw completely to achieve full pre-tightening of the protective cover on the inner gasket, resulting in an integrated structure of compressor-inner gasket-protective cover, thus completing the assembly of the inner gasket.

[0012] Step 8: Vacuuming: Vacuum the sealed cavity formed by the protective cover, inner gasket, and compressor to ensure a vacuum level not exceeding 1.33 × 10⁻⁶. -4 Pa.

[0013] Step 9: Inertization: Inject high-purity nitrogen into the sealed cavity formed by the protective cover, inner gasket and compressor to atmospheric pressure. The nitrogen purity must reach 99.99% or higher to ensure that the wiring of the protective cover is in an inertized environment.

[0014] Step 10, Application: Clean the surfaces of the compressor, inner gasket, and protective cover. Apply additional weather-resistant sealant to the outer surface of the inner gasket, ensuring even and full application to prevent air entrapment. This provides further protection at the connection between the compressor and the protective cover. Allow the weather-resistant sealant, along with the compressor, inner gasket, and protective cover, to cure for 24 hours at an ambient temperature of 25°C and relative humidity of 50%, ensuring the sealant is not flowable or sticky and is fully cured.

[0015] Furthermore, an electrical protection structure for a compressor includes a compressor, an inner gasket, weather-resistant sealant, a protective cover, a fixing stud, and screws, wherein the inner gasket is formed multiple times using weather-resistant sealant. The compressor has a horizontal structure and the casing is made of 316 stainless steel. There are terminals on the top of the compressor for connecting to an external power source. After the wiring is completed, electrical protection treatment needs to be performed on the wiring points.

[0016] Furthermore, the protective cover is used to provide electrical protection for the compressor wiring terminals, preventing seawater from directly splashing onto the terminals.

[0017] Furthermore, the inner gasket is formed multiple times using weather-resistant sealant and is placed between the compressor and the protective cover to prevent seawater from seeping in through the gap between the compressor and the protective cover under capillary action, causing electrical protection failure.

[0018] Furthermore, the inner gasket needs to have weather-resistant sealant applied to the compressor contact surface according to the outer contour of the protective cover, ensuring that it is full and uniform.

[0019] Furthermore, after the inner gasket has cured for 12 hours, the screw needs to be tightened to 1 / 2 of the thread length of the fixing stud to tighten the protective cover to a certain extent, ensuring that the inner gasket surface is engraved with a sealing groove under the pressure of the edge of the protective cover, and that the sealing groove fits perfectly with the contour of the protective cover.

[0020] Furthermore, after the inner gasket continues to cure for 24 hours, the protective cover is fully pre-tightened to complete the assembly of the inner gasket.

[0021] Furthermore, the sealed cavity formed by the protective cover, the inner gasket, and the compressor should be evacuated to ensure a vacuum level not exceeding 1.33 × 10⁻⁶. -4 Pa.

[0022] Furthermore, high-purity nitrogen gas is injected into the sealed cavity formed by the protective cover, the inner gasket, and the compressor to atmospheric pressure. The nitrogen purity must reach 99.99% or higher to ensure that the terminal block of the protective cover is in an inert environment.

[0023] Furthermore, the weather-resistant sealant is resistant to high-temperature, high-humidity, and high-salt marine environments.

[0024] Furthermore, the weather-resistant sealant covers the outer surface of the inner gasket to provide further protection at the connection between the compressor and the protective cover.

[0025] Furthermore, the weather-resistant sealant needs to be fully and evenly applied to the outer surface of the inner gasket and ensure complete curing.

[0026] The beneficial effects of this application are as follows: The compressor's inner gasket processing method avoids the problems of poor compatibility and loose fit between mass-produced rubber flat gaskets and the compressor and protective cover. Addressing the issue of traditional rubber flat gaskets' susceptibility to failure in marine environments, the inner gasket is formed using a weather-resistant sealant with excellent physical properties, formed multiple times according to the contour of the protective cover. This compressor inner gasket processing method provides four layers of electrical protection: After the compressor wiring is completed, the protective cover provides waterproofing and flame retardancy, preventing seawater from directly entering the wiring points, forming the first layer of electrical protection. The inner gasket, through multiple forming processes, perfectly fits the gap between the compressor and the protective cover, preventing seawater from seeping into the wiring points through capillary action, forming the second layer of electrical protection. After inerting treatment, the protective cover's terminals are in an inert environment, not directly contacting oxygen and moisture, forming the third layer of electrical protection. The weather-resistant sealant is coated on the outer surface of the inner gasket, further strengthening its protection, forming the fourth layer of electrical protection. Attached Figure Description

[0027] Figure 1 Schematic diagram of the electrical protection structure of the compressor.

[0028] Among them, the compressor (1), the protective cover (4), the weather-resistant sealant (3), and the inner gasket (2) are all included.

[0029] Figure 2 This is a flowchart of the present invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in more detail below. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this invention. The embodiments described below with reference to reference are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below.

[0031] This invention relates to a method for processing an inner gasket for a compressor and an electrical protection structure for the compressor, comprising a compressor (1), a protective cover (4), a weather-resistant sealant (3), and an inner gasket (2). The protective cover (4) prevents seawater from directly entering the wiring terminals, forming the first layer of electrical protection. The inner gasket (2) connects the compressor (1) and the protective cover (4), forming the second layer of electrical protection. After inertization, the terminals of the protective cover (4) are in an inert environment, preventing direct contact with oxygen and moisture, forming the third layer of electrical protection. Simultaneously, the weather-resistant sealant (3) is applied to the outer surface of the inner gasket (2) to form the fourth layer of electrical protection, enhancing the electrical protection effect. The method for processing the inner gasket of the compressor avoids the problem of poor compatibility and loose fit between mass-produced rubber flat gaskets and the compressor (1) and the protective cover (4). The inner gasket (2) is formed by multiple molding processes based on the contour of the protective cover (4) using a weather-resistant sealant with excellent physical properties, thus avoiding the problem of traditional rubber flat gaskets easily failing in marine environments. This invention is not limited to electrical protection for the compressor (1), but can also be used in outdoor facilities, marine equipment, and built environments where waterproofing, dustproofing, and moisture-proofing are required.

[0032] With the aid of the teachings present in the foregoing description and related drawings, those skilled in the art will conceive of many modifications and other embodiments of the invention. Therefore, it is to be understood that the invention is not limited to the specific embodiments disclosed, and modifications and other embodiments are considered to be included within the scope of the appended claims. Although specific terms are used herein, they are used in a general and descriptive sense only and are not intended to be limiting.

[0033] Example The method for machining the inner gasket of a compressor includes the following steps: Step 1: Material Selection: A single-component weather-resistant sealant is selected. This sealant has strong adhesion, is non-corrosive to materials, and maintains stable performance in harsh natural environments. The sealant also possesses excellent physical properties, with a maximum tensile strength of 8.5 kgf / cm². 2 At maximum load, the elongation is 170% and the specific gravity is 1.02.

[0034] Step 2 Preparation: After confirming that the compressor (1) has been wired, clean the surface of the compressor (1) and the protective cover (4) in an environment with a temperature of 15-35℃ and a relative humidity of 55%-75%.

[0035] Step 3: Initial forming of the inner gasket (2). The protective cover (4) is correctly placed on the surface of the compressor (1). Following the contour of the protective cover (4), the weather-resistant sealant is applied to the surface of the compressor (1) using a glue gun to form the inner gasket (2). Ensure the sealant application is uniform and full, avoiding air trapping. Then, remove the protective cover (4). The weather-resistant sealant is adapted according to the different outer contours of the protective cover (4), avoiding the problems of poor compatibility and adhesion of mass-produced rubber flat gaskets.

[0036] Step 4 Semi-curing: In an environment with an ambient temperature of 25℃ and a relative humidity of 50%, the weather-resistant sealant inner gasket (2) coated on the surface of the compressor (1) is left to stand and cure together with the compressor (1) for 12 hours to ensure that the adhesive does not flow, does not stick to the hand, and is initially cured.

[0037] Step 5: Grooving: The fixing stud (5) is fixed to the surface of the compressor (1) and cooperates with the screw (6) to fix the protective cover (4) to the surface of the compressor (1). The protective cover (4) is installed on the surface of the inner gasket (2) of the pre-cured weather-resistant sealant. The screw (6) is tightened to 1 / 2 of the thread length of the fixing stud (5) to a certain extent to tighten the protective cover (4) and ensure that the surface of the inner gasket (2) is grouted with a sealing groove under the pressure of the edge of the protective cover (4), and the sealing groove fits perfectly with the contour of the protective cover (4).

[0038] Step 6 Curing: Keep the screw (6) tightened to 1 / 2 of the thread length of the fixing stud (5), thereby ensuring that the protective cover (4) and the weather-resistant sealant remain in the pre-tightened state. Lower the ambient temperature to 20°C and increase the relative humidity to 55%, and continue curing for 24 hours to complete the curing process. The control of temperature and humidity ensures that the inner gasket (2) has excellent sealing elasticity after full curing.

[0039] Step 7 Assembly: After evenly applying thread sealant to the 1 / 2 surface of the untightened thread length of the fixed stud (5), tighten the screw (6) completely to achieve full pre-tightening of the protective cover (4) on the inner gasket (2), thereby obtaining the integrated structure of the compressor (1) - inner gasket (2) - protective cover (4) and completing the assembly of the inner gasket (2).

[0040] Step 8: Vacuuming: Vacuum the sealed cavity formed by the protective cover (4), the inner gasket (2), and the compressor (1) to ensure that the vacuum degree is not greater than 1.33 × 10⁻⁶. -4 Pa.

[0041] Step 9: Inertization: Inject high-purity nitrogen gas to atmospheric pressure into the sealed cavity formed by the protective cover (4), the inner gasket (2) and the compressor (1). The purity of the nitrogen gas must reach 99.99% or higher to ensure that the wiring of the protective cover (4) is in an inertized environment.

[0042] Step 10, Application: Clean the surfaces of the compressor (1), the inner gasket (2), and the protective cover (4). Apply additional weather-resistant sealant (3) to the outer surface of the inner gasket (2), ensuring even and full application to prevent air from being trapped. This provides further protection at the connection between the compressor (1) and the protective cover (4). In an environment with an ambient temperature of 25°C and a relative humidity of 50%, allow the weather-resistant sealant (3), along with the compressor (1), the inner gasket (2), and the protective cover (4), to stand and cure for 24 hours, ensuring that the sealant does not flow, is not sticky, and is completely cured.

[0043] An electrical protection structure for a compressor includes a compressor (1), an inner gasket (2), a weather-resistant sealant (3), a protective cover (4), a fixing stud (5), and screws (6), wherein the inner gasket (2) is formed by multiple moldings of weather-resistant sealant; The compressor (1) is a horizontal structure with a housing made of 316 stainless steel. There are terminals on the top of the compressor for connecting to an external power source. After the wiring is completed, electrical protection treatment is required at the wiring points.

[0044] In one embodiment of the present invention, the protective cover (4) is used to provide electrical protection for the wiring of the compressor (1) to prevent seawater from being directly poured onto the wiring terminal.

[0045] In one embodiment of the present invention, the inner gasket (2) is formed by multiple moldings of weather-resistant sealant and is placed between the compressor (1) and the protective cover (4) to prevent seawater from seeping in through the gap between the compressor (1) and the protective cover (4) under capillary action, causing electrical protection failure.

[0046] In one embodiment of the present invention, the inner gasket (2) needs to apply weather-resistant sealant to the contact surface of the compressor (1) according to the outer contour of the protective cover (4) and ensure that it is full and uniform.

[0047] In one embodiment of the present invention, after the inner gasket (2) has been cured for 12 hours, the screw (6) needs to be tightened to 1 / 2 of the thread length of the fixing stud (5) to tighten the protective cover (4) to a certain extent, so as to ensure that the surface of the inner gasket (2) is engraved with a sealing groove under the pressure of the edge of the protective cover (4), and the sealing groove fits perfectly with the contour of the protective cover (4).

[0048] In one embodiment of the present invention, after the inner gasket (2) continues to cure for 24 hours, the protective cover (4) is fully pre-tightened to complete the assembly of the inner gasket (2).

[0049] In one embodiment of the present invention, the sealed cavity formed by the protective cover (4), the inner gasket (2), and the compressor (1) should be evacuated to ensure that the vacuum degree is not greater than 1.33 × 10⁻⁶. -4 Pa.

[0050] In one embodiment of the present invention, high-purity nitrogen gas is injected into the sealed cavity formed by the protective cover (4), the inner gasket (2) and the compressor (1) to atmospheric pressure. The purity of the nitrogen gas needs to reach 99.99% or higher to ensure that the terminal of the protective cover (4) is in an inert environment.

[0051] In one embodiment of the present invention, the weather-resistant sealant (3) has the characteristic of being resistant to high temperature, high humidity and high salt marine environment.

[0052] In one embodiment of the present invention, the weather-resistant sealant (3) covers the outer surface of the inner gasket (2) to further protect the connection between the compressor (1) and the protective cover (4).

[0053] In one embodiment of the present invention, the weather-resistant sealant (3) needs to be fully and evenly coated on the outer surface of the inner gasket (2) and ensured to be completely cured.

[0054] Experimental verification results Test conditions: IP5X test conditions: 1) Protection against solid foreign matter ingress: The test shall be conducted in a dustproof chamber. Talc powder shall be filtered through a metal square-hole sieve with a wire diameter of 50μm and a sieve aperture size of 75μm. The amount of talc powder used shall be 2kg per cubic meter of test chamber volume, and the test time shall be 8h.

[0055] 2) Protection of hazardous parts: Metal wires with a diameter of 1.0 mm must not enter the casing and must maintain a sufficient distance from live parts.

[0056] IPX6M test conditions: Spray water from a nozzle with an inner diameter of 12.5 mm at a distance of 2.5 to 3 m from the sample. The water flow rate is 100 ± 5 L / min and the duration is 3 min. M is the operation of the movable parts of the equipment (such as the rotor of a rotary motor) during the waterproof test.

[0057] Salt spray test conditions: 1) Under normal temperature conditions, visually inspect the test specimen and record the inspection results.

[0058] 2) The test specimens are placed in the salt spray test chamber by the test personnel of the test unit. 3) Adjust the temperature of the test chamber to 35℃ and keep the sample under this condition for 2 hours before spraying. 4) The salt concentration is (5±1)%, and continuous spraying for 24 hours ensures that the sedimentation rate of the salt solution is (1.0~3.0) mL / (80cm). 2 *h). 5) Measure the salt spray settling rate and the pH value of the settling solution every 24 hours. 6) Dry the sample for 24 hours under standard atmospheric conditions (temperature 15℃~35℃) and relative humidity not exceeding 50%. 7) After drying, repeat steps 3) to 5) 20 times.

[0059] Performance test conditions: Performance tests were conducted in accordance with standards such as GB / T 14683-2017 and ISO 188 / ASTM D573.

[0060] Experimental procedure: The compressor electrical protection structure described in this invention and the traditional gasket structure were placed in an air conditioning system for electrical protection testing, salt spray testing, and performance testing.

[0061] Experimental results: The test results are shown in the table below. The test results of the described compressor electrical protection structure are significantly better than those of the traditional gasket structure.

[0062]

[0063] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0064] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0065] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Within the spirit and principles of the present invention, any person skilled in the art may use the above-disclosed technical content to make changes or modifications to equivalent embodiments and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention, as well as any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of the present invention.

Claims

1. A method of processing an inner gasket of a compressor, characterized by, The method comprises the following steps: Step 1, material selection; Step 2, preparation process, maintenance cleaning of the compressor; Step 3, adaptation of the inner gasket preliminary forming; Step 4, semi-curing; Step 5, grooving; Step 6, secondary curing; Step 7, assembly; Step 8, vacuumizing; Step 9, inerting; Step 10, application.

2. The method of claim 1, wherein, The specific steps are as follows: Step 1, material selection: the material is selected as a single-component weather-resistant sealant; Step 2, preparation: after the completion of the compressor wiring, the surface of the compressor and the protective cover is cleaned in an environment with a temperature of 15-35 DEG C and a relative humidity of 55%-75%; Step 3, adaptation of the inner gasket preliminary forming: the protective cover is correctly placed on the surface of the compressor, and the weather-resistant sealant is coated on the surface of the compressor according to the profile of the protective cover to form an inner gasket, so as to ensure that the coating is uniform and full, and air is avoided to be wrapped, and the protective cover is removed; Step 4, semi-curing: in an environment with a temperature of 25 DEG C and a relative humidity of 50%, the weather-resistant sealant inner gasket coated on the surface of the compressor is cured together with the compressor for 12 hours, so as to ensure that the glue liquid does not flow and is not sticky, and the weather-resistant sealant is preliminarily cured; Step 5, grooving: the fixing stud is fixedly connected to the surface of the compressor, and is matched with the screw for fixing the protective cover on the surface of the compressor; the protective cover is installed on the surface of the preliminarily cured weather-resistant sealant inner gasket, the screw is screwed to 1 / 2 of the length of the thread of the fixing stud, the protective cover is fastened to a certain extent, the surface of the inner gasket is ensured to be engraved with a sealing groove under the pressure of the edge of the protective cover, and the sealing groove is perfectly matched with the profile of the protective cover; Step 6, curing: the screw is kept screwed to 1 / 2 of the length of the thread of the fixing stud, so as to ensure that the protective cover and the weather-resistant sealant are kept in a pre-tightening state; the environmental temperature is lowered to 20 DEG C, the relative humidity is increased to 55%, and the curing is continued for 24 hours to achieve the completion of the curing; Step 7, assembly: after the surface of 1 / 2 of the length of the thread of the fixing stud is uniformly coated with thread sealant, the screw is completely screwed, the protective cover is completely pre-tightened on the inner gasket, the compressor-inner gasket-protective cover integrated structure is obtained, and the assembly of the inner gasket is completed; Step 8: Vacuum: The sealed cavity formed by the protective cover, inner gasket, and compressor is evacuated to ensure a vacuum of no more than 1.33 x 10 -4 Pa. Step 9, inerting: high-purity nitrogen gas is injected into the sealing cavity formed by the protective cover, the inner gasket and the compressor to reach normal pressure, the purity of the nitrogen gas needs to be more than 99.99%, and the wiring position of the protective cover is ensured to be in an inert environment; Step 10, application: the surface of the compressor, the inner gasket and the protective cover is cleaned, the weather-resistant sealant is coated on the outer surface of the inner gasket, so as to ensure that the coating is uniform and full, and air is avoided to be wrapped, and the weather-resistant sealant is further used for protecting the connection between the compressor and the protective cover; in an environment with a temperature of 25 DEG C and a relative humidity of 50%, the weather-resistant sealant is cured together with the compressor, the inner gasket and the protective cover for 24 hours, so as to ensure that the glue liquid does not flow and is not sticky, and the weather-resistant sealant is completely cured.

3. A compressor electrical protection structure employing the method of claim 2, characterized by, Compressor, inner gasket, weather-resistant sealant, protective cover, fixing stud, screw, wherein, the inner gasket is made of weather-resistant sealant multiple molding; The compressor is of horizontal structure, the shell is made of 316 stainless steel material, the compressor top has a binding post for connecting external power supply, and electrical protection treatment needs to be carried out on the binding post after wiring.

4. The structure of claim 3, wherein The protective cover is used for electrical protection of the compressor binding post, to avoid direct irrigation of seawater to the binding post.

5. The structure of claim 3, wherein The inner gasket is made of weather-resistant sealant multiple molding, and is arranged between the compressor and the protective cover, to prevent seawater from penetrating through the gap between the compressor and the protective cover under capillary action and causing electrical protection failure.

6. The structure of claim 3, wherein The inner gasket needs to coat weather-resistant sealant on the contact surface of the compressor according to the outer contour of the protective cover, and ensure fullness and uniformity; After the inner gasket is solidified for 12h, the screw needs to be tightened to 1 / 2 of the thread length of the fixing stud, to fasten the protective cover to a certain extent, to ensure that the surface of the inner gasket is engraved with a sealing groove under the pressure of the edge of the protective cover, and the sealing groove is perfectly matched with the contour of the protective cover; After the inner gasket continues to solidify for 24h, the protective cover is completely pre-tightened, and the assembly of the inner gasket is completed.

7. The structure of claim 3, wherein The sealing cavity formed by the protective cover, the inner gasket and the compressor should be vacuumized to ensure that the vacuum degree is not greater than 1.33x10 -4 Pa.

8. The structure of claim 3, wherein High-purity nitrogen is injected into the sealed cavity formed by the protective cover, the inner gasket and the compressor to normal pressure, and the purity of the nitrogen needs to reach more than 99.99%, to ensure that the binding post of the protective cover is in an inert environment.

9. The structure of claim 3, wherein The weather-resistant sealant needs to be coated on the outer surface of the inner gasket to be full and uniform, and to be completely solidified.

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