Composite environment test box for ceramic-based composite sheet

Abstract

The utility model discloses a composite environment test box for a ceramic-based composite sheet, relates to the technical field of ceramic-based composites, and can solve the problem that the ceramic-based composite sheet cannot be tested in a composite environment in the prior art. The device comprises a test box body with a cavity inside and an isolation mounting seat which is used for mounting a test sheet and is matched with the test box body to divide the cavity in the test box body into a low-temperature cavity and a high-temperature cavity, a cooling area for cooling the low-temperature cavity and a heating area for heating the high-temperature cavity are further arranged in the test box body, the cooling area is located on the side, away from the isolation mounting base, of the low-temperature cavity, and the heating area is located on the side, away from the isolation mounting base, of the high-temperature cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to ceramic matrix composite technology field, concretely relates to a composite environment test box of ceramic matrix composite sheet. BACKGROUND

[0002] The complex working condition test box is an acceleration device for simulating indoor environment, and is used for researching performance indexes and mechanism of materials and products in the environment. Under suitable conditions, the finished product components are comprehensively checked, and in combination with microscopic analysis and mechanical analysis results, the failure mode of the finished product in different environments can be found, targeted data for product improvement direction is provided, and the product development and improvement period can be effectively shortened.

[0003] The ceramic matrix composite sheet is usually applied to the aviation field, especially is widely applied to the manufacture of key components such as turbine blades and combustion chambers due to high temperature performance, the performance requirement is strict, the temperature difference of the working environment is large, and the environment is complex, therefore, the test of the composite environment is needed. The existing environment test box for the ceramic matrix composite sheet has limited test projects, usually has high temperature test, ultraviolet aging test and the like, the simulated environment variable is relatively single, the test of the ceramic matrix composite in the composite environment is insufficient, the ceramic matrix composite cannot be well tested, and improvement is needed.

[0004] Based on the above background, the inventor designs a composite environment test box for ceramic matrix composite sheet to solve at least one of the above problems, thereby, the present application is proposed. UTILITY MODEL CONTENT

[0005] The purpose of the present application is to provide a composite environment test box for ceramic matrix composite sheet, which solves the problem that the ceramic matrix composite sheet cannot be tested in the composite environment in the prior art.

[0006] To solve the above technical problems, the utility model adopts the following scheme:

[0007] The present application provides a composite environment test box for ceramic matrix composite sheet, which comprises a test box body with an internal cavity and an isolation mounting seat for mounting the test sheet and cooperating with the test sheet to divide the internal cavity of the test box body into a low-temperature cavity and a high-temperature cavity.

[0008] The test box body is also provided with a cooling area for cooling the low-temperature cavity and a heating area for heating the high-temperature cavity, the cooling area is located on the side of the low-temperature cavity away from the isolation mounting seat, and the heating area is located on the side of the high-temperature cavity away from the isolation mounting seat.

[0009] Optionally, the isolation mounting seat is vertically arranged in the test box body, and the back side thereof is sealed and fixed to the side wall of the test box body on the upper and lower sides.

[0010] The front side of the test box is provided with a front door located in front of the isolation mounting seat;

[0011] The front side of the isolation mounting seat is provided with a sheet mounting groove, and the left and right sides of the isolation mounting seat are provided with communication windows for communicating with the low-temperature cavity and the high-temperature cavity.

[0012] Optionally, the heating structure is a heating resistance wire.

[0013] Optionally, the heating structure is a heating resistance wire.

[0014] A partition plate is arranged between the heating area and the high-temperature cavity, and a plurality of through holes for air circulation are arranged on the partition plate.

[0015] Optionally, the side of the partition plate facing the high-temperature cavity is provided with a conical air outlet structure, and the conical air outlet structure is arranged towards the communication window of the isolation mounting seat.

[0016] Optionally, the test box is further provided with an exhaust structure communicating with the high-temperature cavity.

[0017] Further comprising a control assembly arranged on the test box and used for controlling the opening and closing state of the exhaust structure.

[0018] Optionally, the exhaust structure is provided with a plurality of exhaust ports communicating with the high-temperature cavity, and a blocking groove parallel to the test box.

[0019] The control assembly comprises a driving cylinder and a blocking plate arranged on the output shaft of the driving cylinder and matched with the blocking groove.

[0020] Optionally, the test box is provided with an air outlet communicating with the low-temperature cavity and a cold air inlet communicating with the cooling area.

[0021] Optionally, the test box is further provided with a heat exchange plate for separating the low-temperature cavity and the cooling area.

[0022] The test box is further provided with a cold air outlet communicating with the cooling area.

[0023] The cold air inlet is arranged towards the heat exchange plate.

[0024] Optionally, one side or both sides of the heat exchange plate are provided with heat exchange fins.

[0025] According to the present application, the following beneficial effects are obtained:

[0026] The application can separate the cavity in the test box into a high-temperature cavity and a low-temperature cavity after the test sheet is installed on the isolation mounting seat, and the temperature rising area and the temperature dropping area arranged on the two sides of the test box can respectively rise and drop the temperature of the high-temperature cavity and the low-temperature cavity, so that the two sides of the test sheet are simultaneously subjected to high-temperature impact and low-temperature impact, and the operating environment with a high temperature difference on both sides of the test sheet is simulated.

[0027] The application can further simulate the actual working condition environment of the test sheet by arranging the air outlet communicated with the low-temperature cavity and the high-pressure gas inlet communicated with the temperature rising area on the test box, so that the low-temperature cavity and the high-temperature cavity on both sides of the test sheet have low-pressure and high-pressure environments respectively, that is, both sides of the test sheet are in a high-temperature high-pressure environment and a low-temperature low-pressure environment respectively.

[0028] The application can also switch the high-temperature high-pressure environment of the high-temperature cavity to a combined environment in which the test sheet is subjected to high-temperature airflow impact while simulating the high-temperature high-pressure environment, simulate various working condition environments of the test sheet, and improve the accuracy of the test.

[0029] Therefore, the design concept of the application that separates the test box into two combined environments with great differences by the isolation mounting seat can simulate a combined environment more close to the actual operating condition for the test sheet, and solve the problem that the ceramic matrix composite sheet cannot be tested in a combined environment in the prior art BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a cross-sectional structure schematic diagram of the embodiment 1 of the application.

[0031] Figure 2 It is a cross-sectional structure schematic diagram of the embodiment 1 of the application.

[0032] REFERENCE SIGNS:

[0033] 1-test box, 101-low-temperature cavity, 102-high-temperature cavity, 103-air outlet, 111-temperature dropping area, 112-cold gas inlet, 113-cold gas outlet, 121-temperature rising area, 122-high-pressure gas inlet, 2-isolation mounting seat, 21-sheet installation groove, 22-communication window, 3-heat exchange plate, 31-heat exchange fin, 4-separation plate, 41-conical air outlet structure, 5-heating structure, 6-exhaust structure, 61-exhaust port, 62-blocking groove, 7-driving cylinder, 71-blocking plate. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0035] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figure 1 As shown, this embodiment provides a test chamber 1 with an internal cavity and an isolation mounting base 2 for mounting test sheets and cooperating with it to divide the cavity inside the test chamber 1 into a low-temperature cavity 101 and a high-temperature cavity 102.

[0039] The test chamber 1 is also provided with a cooling zone 111 for cooling the low-temperature chamber 101 and a heating zone 121 for heating the high-temperature chamber 102. The cooling zone 111 is located on the side of the low-temperature chamber 101 away from the isolation mounting base 2, and the heating zone 121 is located on the side of the high-temperature chamber 102 away from the isolation mounting base 2.

[0040] In this embodiment, by setting up a test chamber 1 and an isolation mounting base 2 located in the middle, the test sheet can be installed on the isolation mounting base 2, which divides the cavity inside the test chamber 1 into a high-temperature cavity 102 and a low-temperature cavity 101. Since the heating zone 121 and cooling zone 111 set on both sides of the test chamber 1 can heat up and cool down the high-temperature cavity 102 and the low-temperature cavity 101 respectively, the test sheet is subjected to high-temperature impact and low-temperature impact on both sides at the same time, simulating the operating environment with a high temperature difference on both sides of the test sheet.

[0041] Specifically, as shown in the figure, Figure 1 The isolation mounting seat 2 is vertically arranged in the test box body 1, and the rear side and the upper and lower sides are all sealingly fixed to the side wall of the test box body 1.

[0042] The front side of the test box body 1 is provided with a front door (not shown in the figure) located in front of the isolation mounting seat 2.

[0043] The front side of the isolation mounting seat 2 is provided with a sheet mounting groove 21, and the left and right sides of the isolation mounting seat 2 are provided with communication windows 22 for communicating with the low-temperature cavity 101 and the high-temperature cavity 102.

[0044] By setting the front door and the sheet mounting groove 21, the installation of the test sheet is facilitated, and the communication windows 22 arranged on the isolation mounting seat 2 can make the two sides of the test sheet respectively communicate with the high-temperature cavity 102 and the low-temperature cavity 101. At the same time, the test sheet also serves as an isolation structure of the high-temperature cavity 102 and the low-temperature cavity 101 to isolate the high-temperature cavity 102 and the low-temperature cavity 101.

[0045] Specifically, as shown in the figure, Figure 1 The heating structure 5 is arranged in the heating area 121, and the high-pressure gas inlet 122 is arranged towards the communication window 22 of the isolation mounting seat 2.

[0046] The high-pressure gas inlet 122 arranged in the embodiment makes the high-temperature cavity 102 in a high-temperature and high-pressure environment, which can further improve the fitting degree of the test environment of the test sheet and the actual working environment.

[0047] Specifically, in the embodiment, the heating structure 5 is a heating resistance wire;

[0048] The heating wire is a common heating structure 5, and technicians can also set other heating structures 5, which will not be described here.

[0049] Specifically, in the embodiment, the side of the partition plate 4 facing the high-temperature cavity 102 is provided with a conical air outlet structure 41, which is arranged towards the communication window 22 of the isolation mounting seat 2. The conical air outlet structure 41 can improve the air flow scouring effect on the test sheet.

[0050] Specifically, in the embodiment, the test box body 1 is also provided with an exhaust structure 6 communicating with the high-temperature cavity 102 thereof;

[0051] The control assembly is arranged on the test box 1 and is used for controlling the opening and closing state of the exhaust structure 6. By arranging the control assembly, the high-temperature cavity 102 environment of high temperature and high pressure can be switched to a combined environment in which the test sheet is subjected to high-temperature airflow impact, various working condition environments of the test sheet are simulated, and the accuracy of the test is improved.

[0052] Specifically, as shown in Figure 1 the exhaust structure 6 is provided with a plurality of exhaust ports 61 communicated with the high-temperature cavity 102 and a blocking groove 62 arranged in parallel with the test box 1.

[0053] The control assembly comprises a driving cylinder 7 and a blocking plate 71 arranged on an output shaft of the driving cylinder 7 and matched with the blocking groove 62.

[0054] Specifically, as shown in Figure 1 the test box 1 is provided with an air extraction port 103 communicated with the low-temperature cavity 101 and a cold air inlet 112 communicated with the cooling area 111. By arranging the cold air inlet 112 and the air extraction port 103, the environment in the low-temperature cavity 101 can be in a low-temperature and low-pressure environment. After being matched with the high-temperature and high-pressure environment, the actual working condition environment of the test sheet can be further simulated, and the accuracy of the test is improved.

[0055] Embodiment 2:

[0056] Based on the above-mentioned embodiment 1, as shown in Figure 2 in the embodiment, the test box 1 is further provided with a heat exchange plate 3 used for separating the low-temperature cavity 101 and the cooling area 111.

[0057] The test box 1 is further provided with a cold air outlet 113 communicated with the cooling area 111.

[0058] The cold air inlet 112 is arranged towards the heat exchange plate 3. By arranging the heat exchange plate 3, the low-temperature cavity 101 and the cooling area 111 can be separated, the cold air is prevented from directly blowing the test sheet, and more combined environments of the test sheet are simulated.

[0059] Specifically, in the embodiment, one side or both sides of the heat exchange plate 3 are provided with heat exchange fins 31, so that the heat exchange effect is improved.

[0060] The remaining structures of the embodiment are the same as those of the embodiment 1, and details are not described herein. It can be understood that the above-mentioned embodiments are only exemplary embodiments for illustrating the principle of the utility model, and the utility model is not limited to this. For ordinary skilled persons in the art, various modifications and improvements can be made without departing from the spirit and essence of the utility model, and these modifications and improvements are also regarded as the protection scope of the utility model.

Claims

1. A composite environmental test chamber for ceramic matrix composite sheet material, characterized by, The test box (1) has a cavity inside, and a partition mounting base (2) is arranged in the test box (1) for mounting a test sheet and separating the cavity in the test box (1) into a low-temperature cavity (101) and a high-temperature cavity (102); The test box (1) further comprises a cooling area (111) for cooling the low-temperature cavity (101) and a heating area (121) for heating the high-temperature cavity (102), wherein the cooling area (111) is arranged on a side of the low-temperature cavity (101) away from the partition mounting base (2), and the heating area (121) is arranged on a side of the high-temperature cavity (102) away from the partition mounting base (2).

2. The composite environmental test chamber for ceramic matrix composite sheet material of claim 1, wherein, The partition mounting base (2) is vertically arranged in the test box (1) and is sealed and fixed to the side wall of the test box (1) on the back side and the upper and lower sides. The front side of the test box (1) is provided with a front door in front of the partition mounting base (2). The front side of the partition mounting base (2) is provided with a sheet mounting groove (21), and the left and right sides of the partition mounting base (2) are provided with communication windows (22) for communicating with the low-temperature cavity (101) and the high-temperature cavity (102).

3. The composite environmental test chamber for ceramic matrix composite sheet material of claim 1, wherein, The heating structure (5) is arranged in the heating area (121), and a high-pressure gas inlet (122) is arranged towards the communication window (22) of the partition mounting base (2).

4. The composite environmental test chamber for ceramic matrix composite sheet material of claim 3, wherein The heating structure (5) is a heating resistance wire. A partition plate (4) is arranged between the heating area (121) and the high-temperature cavity (102), and a plurality of through holes for air circulation are arranged on the partition plate (4).

5. The composite environmental test chamber for ceramic matrix composite sheet material of claim 4, wherein, A conical air outlet structure (41) is arranged on the side of the partition plate (4) facing the high-temperature cavity (102), and the conical air outlet structure (41) is arranged towards the communication window (22) of the partition mounting base (2).

6. The composite environmental test chamber for ceramic matrix composite sheet material of claim 3, wherein The test box (1) is further provided with an exhaust structure (6) communicating with the high-temperature cavity (102); The test box (1) is further provided with a control assembly arranged on the test box (1) and used for controlling the opening and closing state of the exhaust structure (6).

7. A composite environmental test chamber for ceramic matrix composite sheet material according to claim 6, wherein, The exhaust structure (6) is provided with a plurality of exhaust ports (61) communicating with the high-temperature cavity (102), and a blocking groove (62) parallel to the test box (1); The control assembly comprises a driving cylinder (7) and a blocking plate (71) arranged on the output shaft of the driving cylinder (7) and matched with the blocking groove (62).

8. The composite environmental test chamber for ceramic matrix composite sheet material of claim 1, wherein, The test box (1) is provided with an air outlet (103) communicating with the low-temperature cavity (101) and a cold air inlet (112) communicating with the cooling area (111).

9. A composite environmental test chamber for ceramic matrix composite sheet material according to claim 8, wherein, The test box (1) is further provided with a heat exchange plate (3) for separating the low-temperature cavity (101) and the cooling area (111); The test box (1) is further provided with a cold air outlet (113) communicating with the cooling area (111); The cold air inlet (112) is arranged towards the heat exchange plate (3).

10. The composite environmental test chamber for ceramic matrix composite sheets of claim 9, wherein, One side or both sides of the heat exchange plate (3) are provided with heat exchange fins (31).

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