A salt spray test chamber and system for production and testing of aviation parts

Abstract

The invention relates to the technical field of component testing, in particular to a salt spray test box and a system thereof for production and testing of aviation components, comprising a support plate, which is detachably fixedly installed inside a salt spray box body; a rotating frame, which is installed inside a circular hole opened in the middle of the support plate through a rotating driving component, and the rotating frame is used to place a test component sample; a trajectory limiting component, which is installed inside the salt spray box body and is used to limit and guide the flow trajectory of the salt spray formed inside the salt spray box body, and drive the salt spray to pass through the rotating frame in an O-shaped cycle; and a sealing component, which is installed between the rotating frame and the support plate. Through the arrangement of the trajectory limiting component, the device enables the salt spray to flow forwardly under the sample, so that the salt spray can be uniformly attached to the sample, thereby facilitating the occurrence of the situation that the salt spray is unevenly attached and thus interferes with the experimental result of the component sample.

Description

Technical Field

[0001] The invention relates to the field of component testing, and in particular to a salt spray test chamber and a system thereof for production testing of aviation components. Background Art

[0002] Salt spray test chamber is a kind of equipment used to simulate the natural environment containing salt such as the ocean, and conduct long-term salt spray corrosion test on materials and products. It is widely used in the fields of material science, automobile industry, electronics and electrical engineering, and is an important tool for evaluating the corrosion resistance of products. The working principle of the salt spray test chamber is to create a salt spray environment that meets the test requirements through the internal salt spray generating device, constant temperature and humidity control system, and sample placement device.

[0003] When aviation parts samples are placed inside a salt spray test chamber for salt spray testing, the salt spray mostly settles downward along the top of the salt spray test chamber. During the downward settling process, the salt spray will adhere to the surface of the sample for a simulation experiment. However, due to the settling of the salt spray from top to bottom, the upper part of the sample will be affected by the settling of the salt spray, while the lower part of the sample is shielded by the sample itself and is less affected by the salt spray settling. As a result, the settling and attachment of the salt spray on the sample surface is uneven, which will affect the uniformity of the settling of the salt spray on the sample surface, thereby affecting the test results of the sample. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a salt spray test chamber and a system thereof for production and testing of aviation parts.

[0005] In a first aspect, the present invention provides a salt spray test chamber for production and testing of aviation parts, comprising a salt spray chamber body, wherein the interior of the salt spray chamber body comprises a porous plate, a first glass cover is rotatably mounted on the top of the salt spray chamber body, and further comprising:

[0006] A support plate is detachably fixedly mounted inside the salt spray chamber body;

[0007] A rotating frame, which is installed in the circular hole opened in the middle of the support plate through a rotating driving assembly, and the rotating frame is used to place the test part sample;

[0008] A trajectory limiting component is installed inside the salt spray chamber body, and is used to limit and guide the flow trajectory of the salt spray formed inside the salt spray chamber body, and drive the salt spray to circulate through the rotating frame in an O-shaped manner;

[0009] A sealing assembly is installed between the rotating frame and the supporting plate, and is used to isolate the rotating drive assembly from salt spray to protect the rotating drive assembly;

[0010] A control unit, used for controlling the guiding speed of the trajectory defining assembly to the salt mist, and for controlling the driving speed of the rotating frame by the rotating driving assembly;

[0011] The staff placed the sample of parts to be tested on the rotating rack, then assembled the sealing components, installed the main body of the salt spray chamber, prepared and started the device;

[0012] It should be noted that the main body of the salt spray chamber is an existing salt spray test chamber, and the internal structure is the same as that of the existing salt spray test chamber, which is a mature existing technology and will not be described in detail here;

[0013] The support plate can rotatably mount the rotating frame, and the rotating frame is driven to rotate by the rotating drive assembly. After the rotating frame rotates, the part sample placed on the upper part is driven to rotate, so that the movement of the part sample forms a circular moving track in the main body of the salt spray chamber;

[0014] After the salt spray box body is started, the salt spray is output from the internal salt spray outlet. After the salt spray is output, it flows along the track of the track limiting component under the action of the track limiting component, so that the salt spray forms an O-shaped flow track inside the salt spray box body after it is generated, so that on one side of the salt spray box body close to the salt spray outlet, the salt spray flows from top to bottom to flow in the direction above the sample, and on the other side of the salt spray box body, the salt spray flows from bottom to top to flow in the direction below the sample. At the same time, the sample rotates in a circle inside the salt spray box body, so that the sample circulates through both sides of the salt spray box body, so that the salt spray can alternately flow through the upper and lower sides of the sample, so that the salt spray can also flow forward below the sample, so that the salt spray can evenly pass through the sample to form adhesion, which is conducive to avoiding the situation where the salt spray adhesion is uneven and interferes with the experimental results of the part sample.

[0015] Preferably, the sealing assembly comprises:

[0016] A first annular groove is provided on the top of the support plate;

[0017] An annular plate, fixed to the bottom of the rotating frame, and rotatably mounted inside the first annular groove;

[0018] A second annular groove is provided on the top of the rotating frame, and water is contained in the first annular groove and the second annular groove;

[0019] A second glass cover is clamped to the interior of the salt spray chamber body through a support block fixed on the side wall, and the bottom of the second glass cover is rotatably connected to the second annular groove;

[0020] The rotation of the rotating frame drives the annular plate and the second annular groove to rotate, so that the annular plate and the first annular groove form relative rotation, and the second annular groove and the second glass cover form relative rotation, so that the annular plate rotates inside the first annular groove, and the bottom of the second glass cover rotates inside the second annular groove. Water is contained inside the second annular groove and the second annular groove, so that under the action of water, the rotating positions between the annular plate and the first annular groove and between the second annular groove and the second glass cover form a sealing effect under the action of water, so that the salt mist is sealed inside the second glass cover and at the position below the support plate, so that the salt mist will not escape to the space where the rotation drive component is located, which is beneficial to avoid the corrosion damage inside the equipment such as the rotation drive component caused by the diffusion of salt mist, and is beneficial to improve the service life of the internal parts of the salt spray box body.

[0021] Preferably, the trajectory definition component comprises:

[0022] A first partition is fixed on the inner wall of the second glass cover, and a first opening is formed between the interior of the first partition and the inner top of the second glass cover;

[0023] A second partition plate is fixed inside the salt spray chamber body and is located below the support plate, and a second opening for the rotating frame to pass through is reserved between the second partition plate and the first partition plate;

[0024] An arc box is fixed on the top of the porous plate, one end of the arc box facing the salt spray outlet inside the salt spray box body is provided with an air inlet end, and the other end of the arc box is provided with an air outlet end;

[0025] A barrier box is fixed inside the arc-shaped box, and a plurality of through slots are provided in a linear array inside the barrier box, and a driving fan is installed inside each of the through slots;

[0026] The first partition and the second partition are arranged so that the interior of the salt spray box body is divided into two spaces, the first opening at the top of the first partition connects the two spaces from the top of the two spaces, and the arc box connects the two spaces from the bottom of the two spaces, so that due to the existence of the two spaces, the salt mist in the space on the side close to the salt spray outlet in the salt spray box body is output from the salt spray outlet in the salt spray box body, and then settles downward until it flows to the space on the other side through the arc box, and then returns to the space on the side close to the salt spray outlet in the salt spray box body through the first opening at the top of the space, thereby forming an O-shaped circulation of salt mist flow in the salt spray box body;

[0027] A driving fan is installed inside the barrier box inside the arc box, and the driving fan can drive the salt mist to flow from one side close to the salt mist outlet inside the salt spray box body to the other side, so as to realize the salt mist flow from bottom to top on the other side, so that the salt mist flows upward to the first opening on the other side and then returns to the side close to the salt mist outlet inside the salt spray box body, thereby providing power for the O-shaped circulation flow of the salt mist;

[0028] The second partition provides a clearance space for the rotating rack to pass through, so that the part sample placed on the rotating rack can circulate through the two spaces through rotation, so that the sample can pass through the salt mist in two directions, which is conducive to the salt mist passing through the sample from two directions, so that the sample can be evenly attached to the salt mist.

[0029] Preferably, it also includes:

[0030] A plurality of through openings are provided in a circular array through the top of the rotating frame;

[0031] A plurality of mesh frames are arranged corresponding to the through openings one by one, the mesh frames are fixed inside the corresponding through openings, and the bottoms of the mesh frames extend downward so that the salt mist flow between adjacent mesh frames is not blocked;

[0032] A mesh frame can be installed inside the through opening. The mesh frame is a fine mesh frame, so that when the part sample is placed inside the mesh frame, the contact area with the sample can be reduced, which is beneficial to reduce the obstruction of the bottom of the sample when it is placed on the rotating rack, so as to facilitate the salt spray to adhere evenly to the salt spray;

[0033] The arrangement of the mesh frames can further enable the salt mist to adhere to the sample through the gaps between the mesh frames, and during the rotation of the rotating frame, the rotation of the rotating frame drives the sample and the salt mist to move relative to each other in the horizontal direction, so that the salt mist has a trajectory of flowing toward the sample in the horizontal direction, so that the sample can have a trajectory of flowing toward the side of the sample, which is conducive to the uniform adhesion of the salt mist to the side and bottom of the sample, and is conducive to promoting the experiment through the uniform adhesion of the sample.

[0034] Preferably, it also includes:

[0035] A guide pipe is fixed to the upper outer wall of the arc box, and both ends of the guide pipe penetrate the second partition plate;

[0036] A communication port, wherein one end of the guide pipe facing the salt spray outlet inside the salt spray chamber body is connected with the air inlet end through the communication port;

[0037] an inclined opening, through which the other end of the guide tube passes toward the second opening;

[0038] The connecting port of the guide pipe is connected to the air inlet end, and the inclined port is connected to the second opening, so that the salt mist flows from the second opening to the air inlet end under the action of the driving fan, so that the salt mist on the side of the salt spray box body close to the salt spray outlet inside the salt spray box body will only flow to the other side through the second opening, and reduce the flow from the other side to the side close to the salt spray outlet inside the salt spray box body, so that the flow of the salt mist on the other side of the salt spray box body from bottom to top can be reduced by the interference of the second opening to the side close to the salt spray outlet inside the salt spray box body, which is conducive to the salt mist inside the salt spray box body to form an O-shaped flow trajectory.

[0039] In a second aspect, a system of a salt spray test chamber for production and testing of aviation parts is provided, wherein a salt spray deposition detector is installed on the top of the porous plate, and the control unit includes a user end. The system method includes the following steps:

[0040] A1. The control unit obtains salt spray amount difference information D from the salt spray deposition detector;

[0041] A2. The control unit obtains acceleration information v1 from the user terminal;

[0042] A3. The control unit obtains the current speed v2 from the rotation drive assembly;

[0043] A4. The control unit substitutes the salt spray amount difference information D into the judgment formula D>0. When the judgment formula is met, the control unit generates acceleration control information v3 according to the calculation formula v3=v2+v1;

[0044] A5. The control unit sends the acceleration control information v3 to the rotation drive component to control the trajectory limiting component to adjust the driving air flow speed of the salt spray to v3 according to the acceleration control information v3;

[0045] On the side where the salt mist should flow from bottom to top, the airflow drives the salt mist too slowly, making it difficult for the salt mist to maintain an upward flow, so that the salt mist still settles downward and it is difficult to achieve a trend of flowing from bottom to top;

[0046] The salt spray precipitation detector can detect the salt spray precipitation on the other side of the main body of the salt spray chamber. For example, the salt spray precipitation detector uses a weight detector to detect the salt spray precipitation per unit area, so as to detect the salt spray precipitation by the difference of the salt spray precipitation at different times.

[0047] After detecting the amount of salt spray deposition, the salt spray deposition detector obtains the difference information D of the amount of salt spray at adjacent moments, and sends the difference information D of the amount of salt spray to the control unit. The staff inputs the acceleration information v1 through the user end, and then the user end sends the acceleration information v1 to the control unit. The trajectory limiting component identifies the current driving air flow speed of the salt spray to obtain the current speed v2, and sends the current speed v2 to the control unit, so that the control unit obtains the difference information D of the amount of salt spray, the acceleration information v1 and the current speed v2. Then the control unit substitutes the difference information D of the amount of salt spray into the judgment formula D>0. When the judgment formula is met, When the control unit generates acceleration control information v3 according to the calculation formula v3=v2+v1, the control unit then sends the acceleration control information v3 to the trajectory limitation component to control the trajectory limitation component to adjust the driving airflow speed of the salt mist to v3 according to the acceleration control information v3, so that the flow speed of the salt mist is switched to continue to flow at the speed of v3, so that at this time, by switching the airflow driving speed, the accelerated driving airflow speed can promote the salt mist to flow upward, which is beneficial to driving the airflow to maintain the direction of flowing from the bottom of the sample to the top, so as to facilitate the uniform contact between the salt mist and the sample.

[0048] Preferably, the control unit includes a storage unit, and the step A1 specifically includes:

[0049] The control unit obtains the current moment salt fog deposition information D1 from the salt fog deposition detector, and uploads the salt fog deposition information D1 to the storage unit;

[0050] The control unit obtains the salt spray precipitation information D2 at the previous moment from the storage unit;

[0051] The control unit substitutes the salt fog deposition information D1 and the salt fog deposition information D2 into D=D1-D2 to obtain the salt fog amount difference information D;

[0052] After detecting the salt fog deposition amount, the salt fog deposition detector obtains the salt fog deposition information D1 at the current moment, and sends the salt fog deposition information D1 to the control unit. After obtaining the salt fog deposition information D1, the control unit uploads the salt fog deposition information D1 to the storage unit for storage, so that the storage unit stores the salt fog deposition information obtained at each moment, so that the control unit can obtain the salt fog deposition information D2 at the previous moment from the storage unit, and then substitute D=D1-D2 into the salt fog deposition information D2 and the salt fog deposition information D1 to obtain the salt fog amount difference information D, thereby obtaining the salt fog amount difference information D.

[0053] Preferably, the step A4 and the step A5 further include:

[0054] The control unit obtains the driving threshold V0 of the user terminal;

[0055] The control unit substitutes the acceleration control information v3 and the driving threshold V0 into the judgment formula v3>V0. When the judgment formula is met, the control unit generates a warning message and substitutes the current speed v2 into v3=v2 to re-assign the acceleration control information v3. When the judgment formula is not met, the control unit does not perform additional control.

[0056] The staff inputs the driving threshold value V0 from the user end, and then the control unit obtains the driving threshold value V0 from the user end, and then the control unit substitutes the acceleration control information v3 and the driving threshold value V0 into the judgment formula v3>V0. When the judgment formula is met, the control unit generates a warning message, and the warning message is used to warn the staff. When the acceleration control information v3 is greater than the driving threshold value V0, it means that the airflow driving speed of the trajectory limiting component to be replaced is greater than the speed of the driving threshold value V0. In this case, the driving speed of the salt spray airflow is too fast, thereby interfering with the stability of the part sample and affecting the experiment. At this time, the staff is prompted by the warning message, and the acceleration control information v3 is reassigned by substituting the current speed v2 into v3=v2, so that the driving speed of the airflow by the trajectory limiting component is maintained at a stable current speed v2, which is conducive to avoiding the adverse effects caused by the excessive flow speed of the salt spray airflow;

[0057] When the judgment formula is not met, it means that the trajectory limiting component will accelerate the control information v3 of the driving speed of the airflow change to a safe speed, which will not cause adverse interference to the experiment. At this time, the control unit does not perform additional control.

[0058] Preferably, a camera is installed on the outer wall of the second glass cover, and further comprises:

[0059] The control unit obtains overall image information from the camera;

[0060] The control unit obtains comparison information from the user terminal;

[0061] The control unit compares the comparison information with the overall picture, and when the overall picture information matches the comparison information, the control unit generates prompt information;

[0062] The control unit sends the prompt information to the user terminal;

[0063] The camera is set toward the rotating frame, and can capture the image of the sample on the rotating frame to form overall image information, and send the image information to the control unit. The staff inputs comparison information from the user end. The comparison information is a corrosion condition image when the corrosion of the part sample meets the requirements. After the control unit obtains the comparison information from the user end, it compares the comparison information with the overall image. When the overall image information meets the comparison information, it means that the corrosion condition of the sample meets the requirements. At this time, the control unit generates a prompt message and sends the prompt message to the user end to prompt the staff.

[0064] Preferably, two cameras are provided, and the two cameras respectively capture the images on both sides of the frame, and further include:

[0065] The control unit obtains edge image information from the two cameras;

[0066] The control unit compares the two edge picture information, and when the two edge picture information are different, the control unit generates reversal control information;

[0067] The control unit sends the reverse rotation control information to the rotation drive component to control the rotation drive component to rotate in the opposite direction at the same speed;

[0068] Two cameras capture edge images of the sample to form edge image information. The two cameras capture images on both sides of the frame respectively, and then send the two edge image information to the control unit. After obtaining the edge image information, the control unit compares the two edge image information. When the comparison of the two edge image information is different, the control unit generates reversal control information, and then the control unit sends the reversal control information to the rotation drive component to control the rotation drive component to rotate in the opposite direction at the same speed.

[0069] Compared with the prior art, the present invention has the following beneficial effects:

[0070] The present invention arranges a trajectory limiting component so that the salt mist can alternately flow through the upper and lower sides of the sample, so that the salt mist can also flow forward through the bottom of the sample, so that the salt mist can evenly pass through the sample to form adhesion, which is beneficial to avoid the occurrence of uneven salt mist adhesion and interference with the experimental results of the part sample.

[0071] The present invention arranges a control unit so that the speed of the driven airflow is accelerated to promote the upward flow of the salt mist, thereby facilitating the driving airflow to keep flowing from the lower side of the sample to the upper side, thereby facilitating uniform contact between the salt mist and the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0073] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0074] Figure 3 It is a schematic diagram of the structure after the overall section of the present invention.

[0075] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0076] Figure 5 The second glass cover and the internal structure of the present invention are schematically shown in FIG. Figure 1 .

[0077] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0078] Figure 7 The second glass cover and the internal structure of the present invention are schematically shown in FIG. Figure 2 .

[0079] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0080] In the figure: 1, salt spray box body; 101, porous plate; 2, first glass cover; 3, support plate; 4, rotating frame; 401, first gear; 402, second gear; 403, motor; 501, first annular groove; 502, annular plate; 503, second annular groove; 504, second glass cover; 505, support block; 6, first baffle; 601, first opening; 602, second baffle; 603, second opening; 7, arc box; 701, air inlet end; 702, air outlet end; 703, barrier box; 704, through groove; 705, driving fan; 8, guide pipe; 801, connecting port; 802, inclined port; 9, through port; 901, mesh frame. DETAILED DESCRIPTION

[0081] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0082] like Figures 2 to 8 A salt spray test chamber for production and testing of aviation parts shown in the figure includes a salt spray chamber body 1, the interior of the salt spray chamber body 1 includes a porous plate 101, a first glass cover 2 is rotatably mounted on the top of the salt spray chamber body 1, and further includes:

[0083] A support plate 3 is detachably fixedly mounted inside the salt spray chamber body 1;

[0084] The rotating frame 4 is installed in the circular hole opened in the middle of the supporting plate 3 through the rotating driving assembly, and the rotating frame 4 is used to place the test part sample;

[0085] A trajectory limiting component is installed inside the salt spray chamber body 1, and is used to limit and guide the flow trajectory of the salt spray formed inside the salt spray chamber body 1, and drive the salt spray to circulate through the rotating frame 4 in an O-shaped manner;

[0086] A sealing assembly is installed between the rotating frame 4 and the supporting plate 3, and is used to isolate the rotating drive assembly from the salt spray to protect the rotating drive assembly;

[0087] A control unit, used for controlling the guiding speed of the trajectory limiting assembly to the salt mist, and for controlling the driving speed of the rotary drive assembly to the rotary frame 4;

[0088] When the aviation parts samples are placed in the salt spray test chamber for salt spray test, the salt spray mostly settles down along the top of the salt spray test chamber. During the downward settling process, the salt spray will adhere to the surface of the sample for simulation experiment. However, it is precisely because the salt spray settles from top to bottom that the upper part of the sample will be affected by the settling of the salt spray, while the lower part of the sample is shielded by the sample itself and is less affected by the salt spray settling. As a result, the settling and attachment of the salt spray on the sample surface is uneven, which will affect the uniformity of the settling of the salt spray on the sample surface, thereby affecting the test results of the sample;

[0089] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: the staff places the part sample to be tested on the rotating frame 4, then assembles the sealing component, installs the salt spray chamber body 1, and starts the device after preparation;

[0090] It should be noted that the salt spray chamber body 1 is an existing salt spray test chamber, and its internal structure is the same as that of the existing salt spray test chamber, which is a mature prior art and will not be described in detail here;

[0091] The support plate 3 can rotatably mount the rotating frame 4, and the rotating frame 4 is driven to rotate by the rotating driving assembly. After the rotating frame 4 rotates, the part sample placed on the upper part is driven to rotate, so that the movement of the part sample forms a circular moving track in the salt spray chamber body 1;

[0092] After the salt spray box body 1 is started, the salt spray is output from the internal salt spray outlet. After the salt spray is output, it flows along the track of the track limiting component under the action of the track limiting component, so that the salt spray forms an O-shaped flow track inside the salt spray box body 1 after it is generated, so that on one side of the salt spray box body 1 close to the salt spray outlet, the salt spray flows from top to bottom to flow in the direction above the sample, and on the other side of the salt spray box body 1, the salt spray flows from bottom to top to flow in the direction below the sample. At the same time, the sample rotates in a circle inside the salt spray box body 1, so that the sample circulates through both sides of the salt spray box body 1, so that the salt spray can alternately flow through the upper and lower sides of the sample, so that the salt spray can also flow forward below the sample, so that the salt spray can evenly pass through the sample to form adhesion, which is conducive to avoiding the situation where the salt spray adhesion is uneven and interferes with the experimental results of the part sample.

[0093] The rotary drive assembly includes:

[0094] The first gear 401 is fixed to the outer ring of the rotating frame 4;

[0095] The motor 403 is fixed to the top of the support plate 3 through a bracket;

[0096] The second gear 402 is fixed to the end of the output shaft of the motor 403, and the second gear 402 is meshed with the first gear 401;

[0097] After the motor 403 is started, the output shaft drives the second gear 402 connected thereto to rotate, the second gear 402 drives the first gear 401 meshing therewith to rotate, and the first gear 401 drives the rotating frame 4 to rotate, thereby forming a rotation drive for the rotating frame 4, and the driving speed of the rotating frame 4 can be adjusted.

[0098] As an optional embodiment, the sealing assembly includes:

[0099] A first annular groove 501 is provided on the top of the support plate 3;

[0100] The annular plate 502 is fixed to the bottom of the rotating frame 4, and the annular plate 502 is rotatably installed inside the first annular groove 501;

[0101] The second annular groove 503 is provided on the top of the rotating frame 4, and water is contained in both the first annular groove 501 and the second annular groove 503;

[0102] The second glass cover 504 is clamped to the inside of the salt spray chamber body 1 through a support block 505 fixed on the side wall, and the bottom of the second glass cover 504 is rotatably connected to the second annular groove 503;

[0103] The rotation of the rotating frame 4 drives the annular plate 502 and the second annular groove 503 to rotate, so that the annular plate 502 and the first annular groove 501 form relative rotation, and the second annular groove 503 and the second glass cover 504 form relative rotation, so that the annular plate 502 rotates inside the first annular groove 501, and the bottom of the second glass cover 504 rotates inside the second annular groove 503. Water is contained inside the second annular groove 503 and the second annular groove 503, so that under the action of water, the rotating positions between the annular plate 502 and the first annular groove 501 and the second annular groove 503 and the second glass cover 504 form a sealing effect under the action of water, so that the salt mist is sealed inside the second glass cover 504 and the position below the support plate 3, so that the salt mist will not escape to the space where the rotation drive component is located, which is beneficial to avoid the corrosion damage to the internal equipment such as the rotation drive component caused by the diffusion of salt mist, thereby helping to improve the service life of the internal parts of the salt spray box body 1.

[0104] As an optional embodiment, the trajectory definition component includes:

[0105] The first partition plate 6 is fixed on the inner wall of the second glass cover 504, and a first opening 601 is formed between the inside of the first partition plate 6 and the inner top of the second glass cover 504;

[0106] The second partition plate 602 is fixed inside the salt spray chamber body 1 and is located below the support plate 3. A second opening 603 for the rotating frame 4 to pass through is reserved between the second partition plate 602 and the first partition plate 6;

[0107] The arc box 7 is fixed on the top of the porous plate 101, and an air inlet end 701 is provided at one end of the arc box 7 facing the salt spray outlet inside the salt spray box body 1, and an air outlet end 702 is provided at the other end of the arc box 7;

[0108] The barrier box 703 is fixed inside the arc box 7. A plurality of through slots 704 are formed in a linear array inside the barrier box 703. Driving fans 705 are installed inside the through slots 704.

[0109] The first partition plate 6 and the second partition plate 602 are arranged so that the interior of the salt spray box body 1 is divided into two spaces, the first opening 601 at the top of the first partition plate 6 connects the two spaces from the top of the two spaces, and the arc box 7 connects the two spaces from the bottom of the two spaces, so that due to the existence of the two spaces, the salt mist in the space on the side close to the salt spray outlet of the salt spray box body 1 is output from the salt spray outlet of the salt spray box body 1, and then settles downward until it flows to the space on the other side through the arc box 7, and then returns to the space on the side close to the salt spray outlet of the salt spray box body 1 through the first opening 601 at the top of the space, thereby forming an O-shaped circulation of salt mist flow inside the salt spray box body 1;

[0110] A driving fan 705 is installed inside the barrier box 703 inside the arc box 7. The driving fan 705 can drive the salt mist to flow from one side close to the salt mist outlet inside the salt spray box body 1 to the other side, thereby realizing the salt mist flow from bottom to top on the other side, so that the salt mist flows upward to the first opening 601 on the other side and then returns to the side close to the salt mist outlet inside the salt spray box body 1, thereby providing power for the O-shaped circulation flow of the salt mist;

[0111] The second partition 602 provides a clearance space for the rotating frame 4 to pass through, so that the part sample placed on the rotating frame 4 can circulate through the two spaces through rotation, so that the sample can pass through the salt mist in two directions, which is conducive to the salt mist passing through the sample from two directions, so that the sample can be evenly attached to the salt mist.

[0112] As an optional embodiment, it also includes:

[0113] A plurality of through openings 9 are provided in a circular array through the top of the rotating frame 4;

[0114] A plurality of mesh frames 901 are arranged corresponding to the through openings 9 one by one, the mesh frames 901 are fixed inside the corresponding through openings 9, and the bottoms of the mesh frames 901 extend downward so that the salt mist flow between adjacent mesh frames 901 is not blocked;

[0115] The mesh frame 901 can be installed inside the through opening 9. The mesh frame 901 is a fine mesh frame, so that when the part sample is placed inside the mesh frame 901, the contact area with the sample can be reduced, which is beneficial to reduce the obstruction of the bottom of the sample when it is placed on the rotating frame 4, so as to facilitate the salt mist to adhere evenly to the salt mist;

[0116] The setting of the mesh frame can further enable the salt mist to adhere to the sample through the gap between the mesh frames 901, and during the rotation of the rotating frame 4, the rotation of the rotating frame 4 drives the sample and the salt mist to move relative to each other in the horizontal direction, so that the salt mist has a trajectory of flowing toward the sample in the horizontal direction, so that the sample can have a trajectory of flowing toward the side of the sample, which is conducive to the uniform adhesion of the salt mist to the side and bottom of the sample, and is conducive to promoting the experiment through the uniform adhesion of the sample.

[0117] As an optional embodiment, it also includes:

[0118] The guide pipe 8 is fixed to the upper outer wall of the arc box 7, and both ends of the guide pipe 8 pass through the second partition plate 602;

[0119] A communication port 801, wherein one end of the guide pipe 8 toward the salt spray outlet inside the salt spray chamber body 1 is connected to the air inlet end 701 through the communication port 801;

[0120] An inclined opening 802, the other end of the guide tube 8 passes through the inclined opening 802 toward the second opening 603;

[0121] The connecting port 801 of the guide pipe 8 is connected to the air inlet end 701, and the inclined port 802 is connected to the second opening 603, so that the salt mist flows from the second opening 603 to the air inlet end 701 under the action of the driving fan 705, so that the salt mist on the side of the salt spray box body 1 close to the salt spray outlet inside the salt spray box body 1 will only flow to the other side through the second opening 603, and reduce the flow from the other side to the side close to the salt spray outlet inside the salt spray box body 1, so that the flow of the salt mist on the other side of the salt spray box body 1 from bottom to top can reduce the interference caused by the second opening 603 flowing to the side close to the salt spray outlet inside the salt spray box body 1, which is conducive to the salt mist inside the salt spray box body 1 to form an O-shaped flow trajectory.

[0122] like Figure 1 The system of a salt spray test chamber for production and testing of aviation parts shown in the figure has a salt spray deposition detector installed on the top of the porous plate 101, and the control unit includes a user end. The system method includes the following steps:

[0123] A1. The control unit obtains salt spray amount difference information D from the salt spray deposition detector;

[0124] A2. The control unit obtains acceleration information v1 from the user end;

[0125] A3. The control unit obtains the current speed v2 from the rotation drive assembly;

[0126] A4. The control unit substitutes the salt spray difference information D into the judgment formula D>0. When the judgment formula is met, the control unit generates acceleration control information v3 according to the calculation formula v3=v2+v1;

[0127] A5. The control unit sends the acceleration control information v3 to the rotation drive assembly to control the trajectory limiting assembly to adjust the driving air flow speed of the salt spray to v3 according to the acceleration control information v3;

[0128] On the side where the salt mist should flow from bottom to top, the airflow drives the salt mist too slowly, making it difficult for the salt mist to maintain an upward flow, so that the salt mist still settles downward and it is difficult to achieve a trend of flowing from bottom to top;

[0129] The salt spray precipitation detector can detect the salt spray precipitation amount on the other side of the salt spray chamber body 1. For example, the salt spray precipitation detector uses a weight detector to detect the salt spray precipitation amount inside the unit area, so as to detect the salt spray precipitation amount by the difference of the salt spray precipitation amount inside at different times;

[0130] After detecting the amount of salt spray deposition, the salt spray deposition detector obtains the difference information D of the amount of salt spray at adjacent moments, and sends the difference information D of the amount of salt spray to the control unit. The staff inputs the acceleration information v1 through the user end, and then the user end sends the acceleration information v1 to the control unit. The trajectory limiting component identifies the current driving air flow speed of the salt spray to obtain the current speed v2, and sends the current speed v2 to the control unit, so that the control unit obtains the difference information D of the amount of salt spray, the acceleration information v1 and the current speed v2. Then the control unit substitutes the difference information D of the amount of salt spray into the judgment formula D>0. When the judgment formula is met, When the control unit generates acceleration control information v3 according to the calculation formula v3=v2+v1, the control unit then sends the acceleration control information v3 to the trajectory limitation component to control the trajectory limitation component to adjust the driving airflow speed of the salt mist to v3 according to the acceleration control information v3, so that the flow speed of the salt mist is switched to continue to flow at the speed of v3, so that at this time, by switching the airflow driving speed, the accelerated driving airflow speed can promote the salt mist to flow upward, which is beneficial to driving the airflow to maintain the direction of flowing from the bottom of the sample to the top, so as to facilitate the uniform contact between the salt mist and the sample.

[0131] As an optional embodiment, the control unit includes a storage unit, and step A1 specifically includes:

[0132] The control unit obtains the current moment salt fog deposition information D1 from the salt fog deposition detector, and uploads the salt fog deposition information D1 to the storage unit;

[0133] The control unit obtains the salt spray precipitation information D2 of the last moment from the storage unit;

[0134] The control unit substitutes the salt fog deposition information D1 and the salt fog deposition information D2 into D=D1-D2 to obtain the salt fog amount difference information D;

[0135] After detecting the salt fog deposition amount, the salt fog deposition detector obtains the salt fog deposition information D1 at the current moment, and sends the salt fog deposition information D1 to the control unit. After obtaining the salt fog deposition information D1, the control unit uploads the salt fog deposition information D1 to the storage unit for storage, so that the storage unit stores the salt fog deposition information obtained at each moment, so that the control unit can obtain the salt fog deposition information D2 at the previous moment from the storage unit, and then substitute D=D1-D2 into the salt fog deposition information D2 and the salt fog deposition information D1 to obtain the salt fog amount difference information D, thereby obtaining the salt fog amount difference information D.

[0136] As an optional embodiment, between step A4 and step A5, the following steps are further included:

[0137] The control unit obtains the driving threshold V0 of the user end;

[0138] The control unit substitutes the acceleration control information v3 and the driving threshold V0 into the judgment formula v3>V0. When the judgment formula is met, the control unit generates a warning message and substitutes the current speed v2 into v3=v2 to re-assign the acceleration control information v3. When the judgment formula is not met, the control unit does not perform additional control.

[0139] The staff inputs the driving threshold value V0 from the user end, and then the control unit obtains the driving threshold value V0 from the user end, and then the control unit substitutes the acceleration control information v3 and the driving threshold value V0 into the judgment formula v3>V0. When the judgment formula is met, the control unit generates a warning message, and the warning message is used to warn the staff. When the acceleration control information v3 is greater than the driving threshold value V0, it means that the airflow driving speed of the trajectory limiting component to be replaced is greater than the speed of the driving threshold value V0. In this case, the driving speed of the salt spray airflow is too fast, thereby interfering with the stability of the part sample and affecting the experiment. At this time, the staff is prompted by the warning message, and the acceleration control information v3 is reassigned by substituting the current speed v2 into v3=v2, so that the driving speed of the airflow by the trajectory limiting component is maintained at a stable current speed v2, which is conducive to avoiding the adverse effects caused by the excessive flow speed of the salt spray airflow;

[0140] When the judgment formula is not met, it means that the trajectory limiting component will accelerate the control information v3 of the driving speed of the airflow change to a safe speed, which will not cause adverse interference to the experiment. At this time, the control unit does not perform additional control.

[0141] As an optional embodiment, a camera is installed on the outer wall of the second glass cover 504, and further includes:

[0142] The control unit obtains overall picture information from the camera;

[0143] The control unit obtains comparison information from the user end;

[0144] The control unit compares the comparison information with the overall picture, and when the overall picture information matches the comparison information, the control unit generates prompt information;

[0145] The control unit sends the prompt information to the user end;

[0146] The camera is set toward the rotating frame 4, and can capture the image of the sample on the rotating frame 4 to form overall image information, and send the image information to the control unit. The staff inputs comparison information from the user end. The comparison information is a corrosion situation picture when the corrosion of the part sample meets the requirements. After the control unit obtains the comparison information from the user end, it compares the comparison information with the overall picture. When the overall picture information meets the comparison information, it means that the corrosion situation of the sample meets the requirements. At this time, the control unit generates a prompt message and sends the prompt message to the user end to prompt the staff.

[0147] As an optional embodiment, two cameras are provided, and the two cameras respectively capture the images on both sides of the frame 901, and further include:

[0148] The control unit obtains edge image information from two cameras;

[0149] The control unit compares the two edge picture information, and when the two edge picture information are different, the control unit generates reversal control information;

[0150] The control unit sends the reverse control information to the rotation drive component to control the rotation drive component to rotate in the opposite direction at the same speed;

[0151] The two cameras capture the edge images of the sample to form edge image information. The two cameras capture the images on both sides of the frame 901 respectively, and then send the two edge image information to the control unit. After obtaining the edge image information, the control unit compares the two edge image information. When the comparison of the two edge image information is different, the control unit generates reversal control information, and then the control unit sends the reversal control information to the rotation drive component to control the rotation drive component to rotate in the opposite direction at the same speed.

[0152] Working principle of the present invention: the staff places the part sample to be tested on the rotating frame 4, then assembles the sealing assembly, installs the salt spray chamber body 1, and starts the device after preparation;

[0153] It should be noted that the salt spray chamber body 1 is an existing salt spray test chamber, and its internal structure is the same as that of the existing salt spray test chamber, which is a mature prior art and will not be described in detail here;

[0154] The support plate 3 can rotatably mount the rotating frame 4, and the rotating frame 4 is driven to rotate by the rotating driving assembly. After the rotating frame 4 rotates, the part sample placed on the upper part is driven to rotate, so that the movement of the part sample forms a circular moving track in the salt spray chamber body 1;

[0155] After the salt spray box body 1 is started, the salt spray is output from the internal salt spray outlet. After the salt spray is output, it flows along the track of the track limiting component under the action of the track limiting component, so that the salt spray forms an O-shaped flow track inside the salt spray box body 1 after it is generated, so that on one side of the salt spray box body 1 close to the salt spray outlet, the salt spray flows from top to bottom to flow in the direction above the sample, and on the other side of the salt spray box body 1, the salt spray flows from bottom to top to flow in the direction below the sample. At the same time, the sample rotates in a circle inside the salt spray box body 1, so that the sample circulates through both sides of the salt spray box body 1, so that the salt spray can alternately flow through the upper and lower sides of the sample, so that the salt spray can also flow forward below the sample, so that the salt spray can evenly pass through the sample to form adhesion, which is conducive to avoiding the situation where the salt spray adhesion is uneven and interferes with the experimental results of the part sample.

[0156] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A salt spray test chamber for production testing of aviation parts, comprising a salt spray chamber body (1), wherein the interior of the salt spray chamber body (1) comprises a porous plate (101), and a first glass cover (2) is rotatably mounted on the top of the salt spray chamber body (1), characterized in that: Also includes: A support plate (3) is detachably fixedly mounted inside the salt spray chamber body (1); A rotating frame (4) is installed inside a circular hole opened in the middle of the support plate (3) through a rotating drive assembly, and the rotating frame (4) is used to place a test part sample; A trajectory limiting component is installed inside the salt spray chamber body (1) and is used to limit and guide the flow trajectory of the salt spray formed inside the salt spray chamber body (1) to drive the salt spray to circulate through the rotating frame (4) in an O-shaped manner; A sealing component is installed between the rotating frame (4) and the supporting plate (3) and is used to isolate the rotating drive component from salt spray to protect the rotating drive component; A control unit, used for controlling the guiding speed of the trajectory defining component on the salt mist, and for controlling the driving speed of the rotating frame (4) on the rotating drive component; The sealing assembly comprises: A first annular groove (501) is formed on the top of the support plate (3); An annular plate (502) is fixed to the bottom of the rotating frame (4), and the annular plate (502) is rotatably mounted inside the first annular groove (501); A second annular groove (503) is provided on the top of the rotating frame (4), and water is contained inside both the first annular groove (501) and the second annular groove (503); The second glass cover (504) is clamped to the inside of the salt spray chamber body (1) via a support block (505) fixed on the side wall, and the bottom of the second glass cover (504) is rotatably connected to the second annular groove (503).

2. The salt spray test chamber for production and testing of aviation parts according to claim 1, characterized in that: The trajectory definition component comprises: A first partition (6) is fixed on the inner wall of the second glass cover (504), and a first opening (601) is provided between the interior of the first partition (6) and the inner top of the second glass cover (504); A second partition plate (602) is fixed inside the salt spray chamber body (1) and is located below the support plate (3); a second opening (603) for the rotating frame (4) to pass through is left between the second partition plate (602) and the first partition plate (6); An arc box (7) is fixed on the top of the porous plate (101); one end of the arc box (7) facing the salt spray outlet inside the salt spray box body (1) is provided with an air inlet end (701); and the other end of the arc box (7) is provided with an air outlet end (702); The barrier box (703) is fixed inside the arc-shaped box (7), and a plurality of through slots (704) are provided in a linear array inside the barrier box (703), and driving fans (705) are installed inside each of the through slots (704).

3. The salt spray test chamber for production and testing of aviation parts according to claim 2, characterized in that: Also includes: A plurality of through openings (9) are formed in a circular array and are provided through the top of the rotating frame (4); A plurality of mesh frames (901) are arranged in one-to-one correspondence with the through openings (9); the mesh frames (901) are fixed inside the corresponding through openings (9); and the bottoms of the mesh frames (901) extend downward so that the flow of salt mist between adjacent mesh frames (901) is not blocked.

4. The salt spray test chamber for production and testing of aviation parts according to claim 3, characterized in that: Also includes: A guide tube (8) is fixed to the upper outer wall of the arc-shaped box (7), and both ends of the guide tube (8) pass through the second partition plate (602); A communication port (801), wherein one end of the guide tube (8) facing the salt spray outlet inside the salt spray chamber body (1) is connected to the air inlet end (701) through the communication port (801); An inclined opening (802), through which the other end of the guide tube (8) passes toward the second opening (603).

5. A system of a salt spray test chamber for production and testing of aviation parts, applicable to a salt spray test chamber for production and testing of aviation parts as claimed in any one of claims 3 to 4, characterized in that: A salt spray deposition detector is installed on the top of the porous plate (101), the control unit comprises a user end, and the control method of the system comprises the following steps: A1. The control unit obtains salt spray amount difference information D from the salt spray deposition detector; A2. The control unit obtains acceleration information v1 from the user terminal; A3. The control unit obtains the current speed v2 from the trajectory definition component; A4. The control unit substitutes the salt spray amount difference information D into the judgment formula D>0. When the judgment formula is met, the control unit generates acceleration control information v3 according to the calculation formula v3=v2+v1; A5. The control unit sends the acceleration control information v3 to the trajectory limiting component to control the trajectory limiting component to adjust the driving air flow speed of the salt spray to v3 according to the acceleration control information v3; The control unit includes a storage unit, and the step A1 specifically includes: The control unit obtains the current moment salt fog deposition information D1 from the salt fog deposition detector, and uploads the salt fog deposition information D1 to the storage unit; The control unit obtains the salt spray precipitation information D2 at the previous moment from the storage unit; The control unit substitutes the salt fog deposition information D1 and the salt fog deposition information D2 into D=D1-D2 to obtain the salt fog amount difference information D.

6. The system of a salt spray test chamber for production and testing of aviation parts according to claim 5, characterized in that: A camera is installed on the outer wall of the second glass cover (504), and further comprises: The control unit obtains the overall picture information from the camera; the control unit obtains the comparison information from the user terminal; The control unit compares the comparison information with the overall picture, and when the overall picture information matches the comparison information, the control unit generates prompt information; The control unit sends the prompt information to the user terminal.

7. The system of a salt spray test chamber for production and testing of aviation parts according to claim 6, characterized in that: The two cameras are provided with two cameras, and the two cameras respectively capture the images on both sides of the screen frame (901), and also include: The control unit obtains edge image information from the two cameras; The control unit compares the two edge picture information, and when the two edge picture information are different, the control unit generates reversal control information; The control unit sends the reverse rotation control information to the rotation driving component to control the rotation driving component to rotate in the opposite direction at the same speed.

Images