An exhaust system for a strong ablation test chamber

Abstract

The present invention provides an exhaust system for a strong ablation test room, which relates to the field of exhaust control technology, and comprises: an exhaust tower (100); a temperature control device, the temperature control device is arranged in an exhaust chamber (1) of the exhaust tower (100) or in an air inlet chamber (3) of the exhaust tower (100), and is used to adjust the temperature of the gas in the exhaust chamber (1) or in the air inlet chamber (3); a flow guide device, the flow guide device is arranged in the exhaust chamber (1) of the exhaust tower (100), and is used to adjust its own angle according to the flow direction of the gas entering the exhaust chamber (1) to guide the gas entering the exhaust chamber (1); and a noise reduction device, the noise reduction device is arranged on the exhaust chamber inner wall (2) of the exhaust chamber (1), and is used to adjust its own height according to the noise frequency of the exhaust tower (100) during exhaust to reduce the noise level during exhaust. The exhaust system provided by the present invention can reduce the temperature of the exhaust airflow and the noise of the exhaust airflow, thereby reducing the impact of high temperature and high dryness airflow on the environment.

Description

Technical Field

[0001] The invention relates to the technical field of exhaust control, in particular to an exhaust system of a strong ablation test room. Background Art

[0002] In the field of aerospace, when testing rockets and other aircraft in the laboratory, the engine nozzle will generate a lot of noise and gas. The high-temperature air is mixed with the normal-temperature air and enters the exhaust tower together, which cools and reduces the noise of the airflow. During the operation of the gas flow test system, the gas flow and its specimen ablation products should be discharged smoothly; however, due to the unreasonable layout of the internal components in the existing exhaust tower, it is easy to cause the gas flow and its specimen ablation products to produce overall reflux during the discharge process; at the same time, due to the unreasonable layout of the internal components of the existing exhaust tower, the area of ​​sewage discharge, exhaust and silencer is insufficient, which easily leads to a high temperature of the gas flow in the tower, and it is easy to generate a lot of noise during the discharge. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an exhaust system for a strong ablation test room to reduce the temperature of the exhaust air flow and the noise during the exhaust of the air flow, thereby reducing the impact of high-temperature and high-dryness air flow on the environment.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0005] An exhaust system for a strong ablation test chamber, comprising:

[0006] Exhaust tower;

[0007] A temperature control device, the temperature control device is arranged in the exhaust cavity of the exhaust tower or in the air inlet cavity of the exhaust tower, and is used to adjust the gas temperature in the exhaust cavity or in the air inlet cavity;

[0008] A flow guiding device, the flow guiding device is arranged in the exhaust cavity of the exhaust tower, and is used to adjust its angle according to the flow direction of the gas entering the exhaust cavity so as to guide the gas entering the exhaust cavity; and

[0009] The noise reduction device is arranged on the inner wall of the exhaust chamber of the exhaust chamber, and is used to adjust its own height according to the monitored noise frequency of the exhaust tower during exhaust so as to reduce the noise level during exhaust.

[0010] In one embodiment, the temperature control device comprises:

[0011] A spray device, wherein the spray device is fixedly connected to the inner wall of the exhaust cavity or the inner wall of the intake cavity, and the spray device is started and stopped according to the monitored temperature of the gas entering the exhaust cavity or the intake cavity to adjust the temperature of the gas in the exhaust cavity or the intake cavity.

[0012] In one embodiment, the spray device includes a first spray device and a second spray device, wherein the first spray device and the second spray device are both fixedly connected to the inner wall of the exhaust chamber, and the second spray device is spaced above the first spray device; or

[0013] The first spray device is fixedly connected to the inner wall of the air inlet cavity, and the second spray device is fixedly connected to the inner wall of the channel partition at the bottom of the exhaust cavity connected to the air inlet cavity.

[0014] In one embodiment, the temperature control device further includes:

[0015] A temperature control circuit is arranged inside the inner wall of the exhaust chamber or on the inner wall of the intake chamber, and the temperature control circuit is electrically connected to the first spray device and the second spray device respectively, and is used to control the start and stop of the first spray device and the second spray device according to the monitored temperature of the gas entering the exhaust chamber or the intake chamber.

[0016] In one embodiment, the temperature control circuit includes a power supply, a first thermistor, a second thermistor, a third resistor, a first current sensing switch, a second current sensing switch, and a third current sensing switch, wherein the first thermistor and the second thermistor are both disposed on the inner wall of the exhaust cavity; or the first thermistor is disposed on the inner wall of the intake cavity, and the second thermistor is disposed on the inner wall of the channel partition; wherein,

[0017] The first end of the third resistor is electrically connected to the power supply, and the second end of the third resistor is electrically connected to the first end of the second current sensing switch and the first end of the third current sensing switch respectively; the second end of the second current sensing switch is electrically connected to the first spray device; the second end of the third current sensing switch is electrically connected to the second spray device; the first end of the first thermistor is electrically connected to the power supply, the second end of the first thermistor is electrically connected to the first end of the second thermistor and is connected in parallel with the third resistor; the first end of the first current sensing switch is electrically connected to the second end of the third resistor, and the second end of the first current sensing switch is electrically connected to the second end of the second thermistor.

[0018] In one embodiment, both the first thermistor and the second thermistor are positive temperature coefficient thermistors.

[0019] In one embodiment, when the current flowing through the first current sensing switch K1 is less than or equal to a first current threshold, the first current sensing switch K1 is closed, and the second current sensing switch K2 and the third current sensing switch K3 are opened;

[0020] When the second current threshold < the current flowing through the second current sensing switch K2 ≤ the third current threshold, the second current sensing switch K2 is closed, and the first current sensing switch K1 and the third current sensing switch K3 are opened;

[0021] When the current flowing through the third current sensing switch K3 is greater than the third current threshold, the second current sensing switch K2 and the third current sensing switch K3 are closed, and the first current sensing switch K1 is opened;

[0022] The first current threshold value is less than the second current threshold value and less than the third current threshold value.

[0023] In one embodiment, the flow guiding device comprises:

[0024] A support frame, two sides of which are fixedly connected to the inner wall of the exhaust chamber;

[0025] A sliding ring beam, wherein the sliding ring beam is disposed in the supporting frame, and two ends of the sliding ring beam are respectively slidably connected to two ends of the supporting frame; and

[0026] A plurality of silencer pipes are arranged in a matrix manner in the sliding ring beam, and two ends of the silencer pipes are respectively fixedly connected to two ends of the sliding ring beam, and the angles of the silencer pipes are adjusted by changing the moving direction of the sliding ring beam in the supporting frame to achieve gas diversion entering the exhaust chamber.

[0027] In one embodiment, the sliding ring beam comprises:

[0028] Outer ring beams are arranged in pairs, one side of a first ring beam of the outer ring beams arranged in pairs is slidably connected to one end of the support frame, and one side of a second ring beam of the outer ring beams arranged in pairs is slidably connected to the other end of the support frame; and

[0029] The inner ring beams are arranged in pairs, one side of the third ring beam in the inner ring beams arranged in pairs is slidably connected to the other side of the first ring beam, the other side of the third ring beam is fixedly connected to one end of the plurality of silencer pipes, one side of the fourth ring beam in the inner ring beams arranged in pairs is slidably connected to the other side of the second ring beam, and the other side of the fourth ring beam is fixedly connected to the other end of the plurality of silencer pipes.

[0030] In one embodiment, a first sliding groove is provided between one side of the first ring beam and the support frame and between one side of the second ring beam and the support frame;

[0031] A second sliding groove is provided between one side of the third ring beam and the other side of the first ring beam, and between one side of the fourth ring beam and the other side of the second ring beam, and the second sliding groove is perpendicular to the first sliding groove.

[0032] In one embodiment, the noise reduction device comprises:

[0033] a noise frequency monitor in communication with an external control unit; and

[0034] A liftable box assembly, the bottom of which is fixedly connected to the inner wall of the exhaust chamber, and the liftable box assembly is communicatively connected to the external control unit, and the noise frequency monitored and fed back by the noise frequency monitor controls and adjusts the height of the liftable box assembly to reduce the noise level during exhaust.

[0035] In one embodiment, the liftable box assembly comprises:

[0036] At least two layers of cavity plates, wherein at least two layers of the cavity plates are sequentially nested;

[0037] A top plate, which is a perforated plate, is disposed above the at least two layers of the cavity plates and is fixedly connected to a top cavity plate of the at least two layers of the cavity plates; and

[0038] A base, one side of which is fixedly connected to at least two layers of the cavity plates and to the bottom cavity plate, and the other side of which is fixedly connected to the inner wall of the exhaust cavity.

[0039] In one embodiment, the perforation rate of the perforated plate is 1%-3%, and the hole diameter of the perforated plate is 0.5-1 mm.

[0040] In one embodiment, at least two layers of the cavity plates are made of foamed aluminum material.

[0041] The above solution of the present invention includes at least the following beneficial effects:

[0042] 1. By setting up the temperature control device, the thermistor and current sensing switch in the temperature control device can automatically select different cooling modes according to the change of air flow temperature to assist the air flow cooling. While ensuring that the air flow entering the exhaust tower temperature or the exhaust tower discharge temperature is lower than the required threshold, it can also achieve the economic effect of energy saving.

[0043] 2. By setting up a guide device, the angle of the matrix silencer pipe with a sliding groove in the guide device can be changed according to the direction of the airflow, so that the airflow can smoothly enter the exhaust chamber to achieve gas diversion, and at the same time, it can also avoid the phenomenon of airflow backflow, thereby improving the airflow discharge efficiency and noise reduction efficiency.

[0044] 3. By setting up noise reduction equipment, the noise reduction equipment can automatically adjust the height of its own cavity plate according to the monitored noise frequency, thereby improving the noise reduction effect of noises of different frequencies.

[0045] It should be understood that the contents described in the Summary of the Invention section are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easy to understand through the following description. In addition, the implementation of any embodiment of the present invention does not mean that multiple or all of the above-mentioned beneficial effects must be possessed or achieved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0047] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0048] Figure 1 is a schematic diagram of the overall structure of an exhaust system provided by an embodiment of the present invention;

[0049] Figure 2 is a schematic diagram of the three-dimensional structure of a flow guide device provided by an optional embodiment of the present invention;

[0050] Figure 3 is a partial schematic diagram of a flow guiding device provided by an optional embodiment of the present invention;

[0051] Figure 4 is a schematic diagram of a temperature control circuit provided by an optional embodiment of the present invention;

[0052] Figure 5 is a schematic diagram of an arrangement of a spray device provided in an optional embodiment of the present invention;

[0053] Figure 6 is a schematic diagram of another arrangement of a spray device provided by an optional embodiment of the present invention;

[0054] Figure 7is a schematic diagram of the three-dimensional structure of a noise reduction device provided by an optional embodiment of the present invention;

[0055] Figure 8 It is an exploded view of a noise reduction device provided in an optional embodiment of the present invention.

[0056] Description of Figure Numbers:

[0057] 100. Exhaust tower;

[0058] 1. Exhaust cavity; 2. Inner wall of exhaust cavity; 3. Inlet cavity; 31. Inner wall of inlet cavity; 4. Silencer; 51. First ring beam; 52. Second ring beam; 61. Third ring beam; 62. Fourth ring beam; 71. First knob controller; 72. Second knob controller; 73. First paddle controller; 74. Second paddle controller; 81. First sliding groove; 82. Second sliding groove; 9. Box plate; 10. First support hanger; 11. Second support hanger; 12. Spring; 13. Inner wall of channel partition; 14. Top plate; 15. First cavity plate; 16. Second cavity plate; 17. Third cavity plate; 18. Base; 181. Drawer structure; 182. Base connecting plate; 19. High-alumina concrete and magnesium brick;

[0059] D1, power supply; R1, first thermistor; R2, second thermistor; R3, third resistor; K1, first current sensing switch; K2, second current sensing switch; K3, third current sensing switch; P1, first spray device; P2, second spray device; C1, first warning light; C2, second warning light. DETAILED DESCRIPTION

[0060] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0061] In the description of the present invention, it is to be understood that the terms "include / comprise", "consist of" or any other variation thereof are intended to cover non-exclusive inclusion, so that a product, device, process or method including a series of elements includes not only those elements, but also other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of further restrictions, the elements defined by the phrases "include / comprise...", "consist of..." do not exclude the presence of other identical elements in the product, device, process or method including the elements.

[0062] It should also be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device, component or structure referred to must have a specific direction, be constructed or operate in a specific direction, and should not be understood as a limitation on the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] like Figure 1 As shown, an embodiment of the present invention provides an exhaust system for a strong ablation test chamber, including an exhaust tower 100, a temperature control device, a flow guide device and a noise reduction device.

[0066] Among them, the temperature control device is arranged in the exhaust chamber 1 of the exhaust tower 100 or the air inlet chamber 3 of the exhaust tower 100, and is used to adjust the gas temperature in the exhaust chamber 1 or the air inlet chamber 3; the flow guide device is arranged in the exhaust chamber 1 of the exhaust tower 100, and is used to adjust its own angle according to the flow direction of the gas entering the exhaust chamber 1 to guide the gas entering the exhaust chamber 1; the noise reduction device is arranged on the exhaust chamber inner wall 2 of the exhaust chamber 1, and is used to adjust its own height according to the monitored noise frequency of the exhaust tower 100 during exhaust to reduce the noise level during exhaust.

[0067] In this embodiment, the exhaust chamber 1 of the exhaust tower 100 is divided into two exhaust channels, the two exhaust channels are separated by a channel partition inner wall 13, and the air inlet chamber 3 is connected to the bottom of the exhaust chamber 1; the temperature control device is arranged in the exhaust chamber 1 (the two exhaust channels are respectively provided with a temperature control device) or the air inlet chamber, so as to select different cooling working modes according to the air flow temperature in the exhaust chamber 1 or the air inlet chamber 3, to ensure that the temperature of the air flow entering the exhaust chamber 1 from the air inlet chamber 3 is lower than the required threshold value or to control the air flow discharged from the exhaust chamber 1 to be lower than the temperature threshold value, thereby reducing the impact of the high-temperature air flow on the environment and the surroundings.

[0068] The flow guiding device is arranged in each exhaust channel of the exhaust chamber 1, and at least two flow guiding devices are arranged in each exhaust channel from the top, and at least two flow guiding devices are arranged in sequence from the bottom to the bottom; the components in the flow guiding device can adjust their own directions according to the direction of the airflow entering the exhaust chamber 1, so that the airflow can smoothly pass through the exhaust chamber 1 and be discharged from the exhaust tower 100, thereby realizing the flow guidance of the gas, and improving the exhaust efficiency while also avoiding the backflow of the airflow;

[0069] The noise reduction device is arranged on the inner wall 2 of the exhaust chamber, and the bottom of the noise reduction device is fixedly connected to the inner wall 2 of the exhaust chamber. The noise reduction device adjusts the expansion and contraction of its own structure according to the different frequencies of the noise generated during the exhaust, so as to improve the silencing efficiency of noises of different frequencies and reduce the impact of high-dryness airflow on the environment and surroundings.

[0070] In an optional embodiment of the present invention, the temperature control device includes: a spray device, which is fixedly connected to the inner wall 2 of the exhaust chamber or the inner wall 31 of the intake chamber 3, and the spray device is started and stopped according to the monitored gas temperature entering the exhaust chamber 1 or the intake chamber 3 to adjust the gas temperature in the exhaust chamber 1 or the intake chamber 3.

[0071] Further, such as Figure 5 and Figure 6 As shown, the spray device includes a first spray device P1 and a second spray device P2, wherein the first spray device P1 and the second spray device P2 are both fixedly connected to the inner wall 2 of the exhaust chamber, and the second spray device P2 is spaced above the first spray device P1; or

[0072] The first spray device P1 is fixedly connected to the inner wall 31 of the air intake chamber, and the second spray device P2 is fixedly connected to the inner wall 13 of the channel partition at the bottom of the exhaust chamber 1 connected to the air intake chamber 3 .

[0073] In this embodiment, the spray device can be set to three working modes, and the three working modes are switched according to the corresponding air flow temperature; here, the air flow temperature can be monitored in real time by a temperature sensor, which is of course not limited to the temperature sensor.

[0074] like Figure 5 and Figure 6 As shown, according to the relative arrangement positions of the first spray device P1 and the second spray device P2, after entering the exhaust chamber 1 or when the airflow enters the exhaust chamber 1 from the air intake chamber 3, the airflow will first flow through the first spray device P1 and then flow through the second spray device P2; when the airflow flows through the first spray device P1, the first spray device P1 can selectively perform a cooling treatment on the initial incoming airflow, and then when it flows through the second spray device P2, the second spray device P2 can selectively perform a secondary cooling treatment on the airflow after the cooling treatment by the first spray device P1; here, the temperature of the airflow flowing through the first spray device P1 is taken as the first stage airflow temperature, and the temperature of the airflow after the cooling treatment by the first spray device P1 and flowing through the second spray device P2 is taken as the second stage airflow temperature; further, the working mode of the spray device can be switched according to the first stage airflow temperature, the second stage airflow temperature and the airflow temperature threshold, specifically:

[0075] When the temperature of one section of airflow is less than the airflow temperature threshold, the spray device is in the first working mode, specifically, the first spray device P1 and the second spray device P2 are not started; when the temperature of one section of airflow is greater than the airflow temperature threshold and the temperature of the second section of airflow is also greater than the airflow temperature threshold, the spray device is in the second working mode, specifically, the first spray device P1 and the second spray device P2 are both started; when the temperature of one section of airflow is greater than the airflow temperature threshold, and after a cooling treatment, the temperature of the second section of airflow is less than or greater than the airflow temperature threshold, the spray device is in the third working mode, specifically, the first spray device P1 is started, and the second spray device P2 is not started. By switching between the three different working modes of the temperature control device, the economic effect of energy saving can be achieved while meeting the cooling standard; here, the airflow temperature threshold can be set according to the specific requirements of the exhaust treatment. Usually, the temperature of the gas flow in the tower should not exceed 350K, and the airflow temperature threshold can be set to 350K, for example.

[0076] In an optional embodiment of the present invention, the nozzles of the first spray device P1 and the second spray device P2 can be set at a 45-degree angle to the inner wall to achieve an optimal spray angle; here, the spray can directly use cooling water or other cooling media to achieve cooling of the airflow through heat exchange, and the cooling water can flow back into the exhaust tower for reuse and save resources.

[0077] In an optional embodiment of the present invention, the temperature control device may further include a temperature control circuit. Here, the temperature control circuit is arranged in the inner wall 2 of the exhaust chamber or on the inner wall 31 of the air intake chamber, and the temperature control circuit is electrically connected to the first spray device P1 and the second spray device P2, respectively, and is used to control the start and stop of the first spray device P1 and the second spray device P2 according to the monitored gas temperature entering the exhaust chamber 1 or the air intake chamber 3.

[0078] In this embodiment, the start and stop of the first spray device P1 and the second spray device P2 are controlled by a temperature control circuit to ensure the timeliness and accuracy of the start and stop.

[0079] Further, such as Figure 4 As shown, the temperature control circuit may include a power supply D1, a first thermistor R1, a second thermistor R2, a third resistor R3, a first current sensing switch K1, a second current sensing switch K2 and a third current sensing switch K3, wherein the first thermistor R1 and the second thermistor R2 are both arranged on the inner wall 2 of the exhaust cavity, or the first thermistor R1 is arranged on the inner wall 31 of the intake cavity, and the second thermistor R2 is arranged on the inner wall 13 of the channel partition; wherein,

[0080] A first end of the third resistor R3 is electrically connected to the power source D1, a second end of the third resistor R3 is electrically connected to a first end of the second current sensing switch K2 and a first end of the third current sensing switch K3 respectively, a second end of the second current sensing switch K2 is electrically connected to the first spray device P1, and a second end of the third current sensing switch K3 is electrically connected to the second spray device P2;

[0081] A first end of the first thermistor R1 is electrically connected to the power source D1, a second end of the first thermistor R1 is electrically connected to a first end of the second thermistor R2, and is connected in parallel to the third resistor R3;

[0082] A first end of the first current sensing switch K1 is electrically connected to a second end of the third resistor R3 , and a second end of the first current sensing switch K1 is electrically connected to a second end of the second thermistor R2 .

[0083] In this embodiment, the first thermistor R1 and the second thermistor R2 are both temperature sensitive resistors. Preferably, the first thermistor R1 and the second thermistor R2 are both positive temperature coefficient thermistors, and their resistance values ​​increase with increasing temperature; the third resistor R3 is a temperature insensitive resistor; the first thermistor R1 is connected in series with the second thermistor R2, and then connected in parallel with the third resistor R3 after the series connection; here, the third resistor R3 is wrapped by a temperature insulation layer to prevent high temperature from affecting its resistance value;

[0084] The first current sensing switch K1, the second current sensing switch K2 and the third current sensing switch K3 are all switches with current sensors; in an optional embodiment of the present invention, the first current sensing switch K1 can be set to be initially closed, and when the current flowing through the first current sensing switch K1 is ≤ the first current threshold, the first current sensing switch K1 continues to remain closed, and the second current sensing switch K2 and the third current sensing switch K3 are opened; when the second current threshold < the current flowing through the second current sensing switch K2 ≤ the third current threshold, the second current sensing switch K2 is closed, and the first current sensing switch K1 and the third current sensing switch K3 are opened; when the current flowing through the third current sensing switch K3 is > the third current threshold, the second current sensing switch K2 and the third current sensing switch K3 are both closed, and the first current sensing switch K1 is opened; the first current threshold < the second current threshold < the third current threshold. It should be known that when the first current sensing switch K1 is closed, since the current does not reach the current threshold for closing the second current sensing switch K2 and the third current sensing switch K3, the second current sensing switch K2 and the third current sensing switch K3 are both opened.

[0085] The first thermistor R1, the second thermistor R2, the third resistor R3, the first current sensing switch K1, the second current sensing switch K2 and the third current sensing switch K3 can all be disposed in the inner wall of the exhaust tower 100 to avoid damage caused by high temperature.

[0086] The specific process of the temperature control device provided by the above embodiment of the present invention controlling and switching the working mode through the temperature control circuit to perform the temperature reduction process is as follows (taking the air flow temperature threshold of 350k as an example):

[0087] First of all, it should be noted that: when the current flowing through the third resistor R3 is very large, it means that the resistance values ​​of the first thermistor R1 and the second thermistor R2 are very large at this time, further indicating that the temperature of the first airflow segment and the temperature of the second airflow segment are both greater than the airflow temperature threshold value of 350k; when the current flowing through the third resistor R3 is very small, it means that the resistance values ​​of the first thermistor R1 and the second thermistor R2 are very small at this time, further indicating that the temperature of the first airflow segment and the temperature of the second airflow segment are both less than the airflow temperature threshold value of 350k; when the current flowing through the third resistor R3 is large, it means that the resistance values ​​of the first thermistor R1 and the second thermistor R2 are large at this time, further indicating that the temperature of the first airflow segment is greater than the airflow temperature threshold value of 350k, and the temperature of the second airflow segment is less than the airflow temperature threshold value of 350k.

[0088] Specific:

[0089] Step 11, when there is no heat flow or the air flow temperature passing through the first thermistor R1 and the second thermistor R2 is less than the air flow temperature threshold of 350k, the resistance values ​​of the first thermistor R1 and the second thermistor R2 are much smaller than the resistance value of the third resistor R3; since the first thermistor R1 is connected in series with the second thermistor R2 and then connected in parallel with the third resistor R3, at this time, most of the current passes through the line of the first thermistor R1 and the second thermistor R2 in series, and only a small part of the current passes through the third resistor R3. At this time, according to the voltage resistance calculation, if the current flowing through the third resistor R3 is very small and ≤ the first current threshold, the first current sensing switch K1 continues to remain closed, the second current sensing switch K2 and the third current sensing switch K3 are both opened, and the first spray device P1 and the second spray device P2 do not start spraying;

[0090] Step 12, as the temperature rises, when the air flow temperature passing through the first thermistor R1 and the second thermistor R2 is greater than the air flow temperature threshold of 350k, the resistance values ​​of the first thermistor R1 and the second thermistor R2 increase sharply and are much greater than the resistance value of the third resistor R3. At this time, most of the current flows to the branch where the third resistor R3 is located; at this time, according to the voltage-resistance relationship, when the current flowing through the third resistor R3 is greater than the third current threshold, the second current sensing switch K2 and the third current sensing switch K3 are both closed, and the first current sensing switch K1 is opened, then the first spray device P1 and the second spray device P2 start spraying, and the air flow temperature drops;

[0091] Step 13, if the airflow temperature after cooling by the first spray device P1 is still greater than the airflow temperature threshold value of 350K, the resistance value of the second thermistor R2 is still large, and the current passing through the third resistor R3 will be reduced compared to before cooling, but it is still greater than the threshold at which the second current sensing switch K2 and the third current sensing switch K3 are closed (greater than the third current threshold value). At this time, the first current sensing switch K1 continues to be opened, the second current sensing switch K2 and the third current sensing switch K3 continue to be closed, and the first spray device P1 and the second spray device P2 continue to spray and cool down;

[0092] Step 14, if the temperature of the airflow after cooling by the first spray device P1 is less than the airflow temperature threshold value 350K, at this time, due to the decrease in airflow temperature, the resistance value of the second thermistor R2 will decrease, and the current flowing through the third resistor R3 will decrease; at this time, according to the voltage-resistance relationship, when the current flowing through the third resistor R3 is greater than the second current threshold value but not greater than the third current threshold value, the threshold value for closing the second current sensing switch K2 is met (i.e., greater than the second current threshold value), but the threshold value for closing the third current sensing switch K3 is not met (i.e., greater than the third current threshold value), then the second current sensing switch K2 continues to be closed, the first current sensing switch K1 and the third current sensing switch K3 are both opened, then the second spray device P2 will not perform secondary spraying, and the first spray device P1 continues to spray until there is no heat flow or the airflow temperatures passing through the first thermistor R1 and the second thermistor R2 are both less than the airflow temperature threshold value 350K (less than the airflow temperature threshold value 350K and when according to the voltage-resistance calculation: the current flowing through the third resistor R3 is very small and ≤ the first current threshold value) stops.

[0093] It should be known that the gas flow rate in the exhaust chamber 1 is very large, which will directly cause the temperature in the exhaust chamber 1 to change, thereby affecting the resistance change of the first thermistor R1 and the second thermistor R2 as a whole. Here, it can be understood that the resistance values ​​of the first thermistor R1 and the second thermistor R2 change with the temperature as a whole; after the first spray device P1 sprays, the temperature in the entire exhaust chamber 1 can be reduced, thereby making the temperature in the entire exhaust chamber 1 lower than the airflow temperature threshold of 350K.

[0094] In an optional embodiment of the present invention, the temperature control circuit may further include a first warning light C1 and a second warning light C2; wherein, the first end of the first warning light C1 is electrically connected to the second end of the third resistor R3, and the second end of the first warning light C1 is electrically connected to the first end of the first current sensing switch K1; the first end of the second warning light C2 is electrically connected to the second end of the third resistor R3, and the second end of the second warning light C2 is electrically connected to the first end of the second current sensing switch K2 and the first end of the third current sensing switch K3, respectively. The setting of the first warning light C1 and the second warning light C2 can ensure that the entire circuit is still a closed loop when the switch is disconnected, and further ensure that there is current at the current sensing switch; preferably, the brightness of the first warning light C1 and the second warning light C2 can be changed according to the size of the current, so as to intuitively reflect the current spray mode.

[0095] like Figures 2 to 3As shown, in an optional embodiment of the present invention, the flow guiding device may include a support frame, a sliding ring beam and a plurality of silencer pipes 4. Among them, the two sides of the support frame are fixedly connected to the inner wall 2 of the exhaust chamber; the sliding ring beam is arranged in the support frame, and the two ends of the sliding ring beam are respectively slidably connected to the two ends of the support frame; the plurality of silencer pipes 4 are arranged in a matrix in the sliding ring beam, and the two ends of the plurality of silencer pipes 4 are respectively fixedly connected to the two ends of the sliding ring beam, and the angles of the plurality of silencer pipes 4 are adjusted by changing the moving direction of the sliding ring beam in the support frame to realize the flow guiding of the gas entering the exhaust chamber 1.

[0096] In this embodiment, the guide device is installed as a whole in the exhaust cavity and is connected to the inner wall 2 of the exhaust cavity through a supporting frame bolt. Three guide devices can be arranged longitudinally in each side channel of the exhaust tower 100, which can improve the exhaust efficiency and avoid gas backflow.

[0097] The sliding ring beam is installed in the support frame and space for the sliding ring beam to move is reserved in four directions of front, back, left, and right relative to the support frame, so that the sliding ring beam can drive multiple silencer pipes 4 to move in different directions.

[0098] Here, a plurality of silencer pipes 4 are distributed in a matrix in the sliding ring beam, which can achieve uniform exhaust while also guiding the airflow entering the silencer pipes. In addition, the setting of the silencer pipes also helps to reduce noise during exhaust.

[0099] In an optional embodiment of the present invention, the support frame may include: two box plates 9, a first support bracket 10 and a second support bracket 11. The first support bracket 10 and the second support bracket 11 are arranged in parallel, the two box plates 9 are arranged in parallel, and the two ends of the two box plates 9 are respectively perpendicular to and fixedly connected with the first support bracket 10 and the second support bracket 11; the entire support frame is bolted and fixed to the inner wall 2 of the exhaust chamber through the two ends of the first support bracket 10 and the two ends of the second support bracket 11.

[0100] In an optional embodiment of the present invention, the sliding ring beam may include an outer ring beam arranged in pairs and an inner ring beam arranged in pairs inside the outer ring beam. The outer ring beam arranged in pairs includes a first ring beam 51 and a second ring beam 52, and the inner ring beam arranged in pairs includes a third ring beam 61 and a fourth ring beam 62. One side of the first ring beam 51 is slidably connected to one end of the support frame, and one side of the second ring beam 52 is slidably connected to the other end of the support frame; one side of the third ring beam 61 is slidably connected to the other side of the first ring beam 51, and the other side of the third ring beam 61 is fixedly connected to one end of a plurality of silencer pipes 4, one side of the fourth ring beam 62 is slidably connected to the other side of the second ring beam 52, and the other side of the fourth ring beam 62 is fixedly connected to the other end of the plurality of silencer pipes 4.

[0101] In this embodiment, the first ring beam 51 is arranged on and slidably connected to the inner side of the first support hanger 10, and the second ring beam 52 is arranged on and slidably connected to the inner side of the second support hanger 11. During installation, a first preset distance is reserved between the two ends of the first ring beam 51 and the two ends of the second ring beam 52 and the box plates 9 on both sides, so that the overall structure composed of the sliding ring beam and the multiple silencer pipes can move in the first direction (left and right direction) within the support frame to ensure stability and consistency during movement.

[0102] The third ring beam 61 is arranged on and slidably connected to the other side of the first ring beam 51, and the fourth ring beam 62 is arranged on and slidably connected to the other side of the second ring beam 52. During installation, a second preset distance is reserved between both sides of the third ring beam 61 and both sides of the first ring beam 51, and between both sides of the fourth ring beam 62 and both sides of the second ring beam 52, so that the overall structure composed of the third ring beam 61, the fourth sliding ring beam 62 and a plurality of silencer pipes can move between the first ring beam 51 and the second sliding ring beam 52 along the second direction (in the front-to-back direction), thereby ensuring stability and consistency during movement.

[0103] By providing the inner and outer ring beams, the flow guiding device can timely adjust the angle of the silencer pipe 4 according to the airflow direction, so that the airflow can smoothly enter the silencer pipe, thereby achieving flow guidance and noise reduction.

[0104] Preferably, both ends of each of the multiple silencer pipes 4 can be suspended on the other side of the third ring beam 61 and the other side of the fourth ring beam 62 respectively through springs 12.

[0105] Furthermore, a first sliding groove 81 is provided between one side of the first ring beam 51 and the supporting frame, and between one side of the second ring beam 52 and the supporting frame; here, the first sliding groove 81 can be respectively opened on the inner side of the first support hanger 10 and the inner side of the second support hanger 11, so as to facilitate the first ring beam 51 to move on the inner side of the first support hanger 10 and the second ring beam 52 to move on the inner side of the second support hanger 11.

[0106] A second sliding groove 82 is provided between one side of the third ring beam 61 and the other side of the first ring beam 51, and between one side of the fourth ring beam 62 and the other side of the second ring beam 52; here, the second sliding groove 82 can be respectively provided on the other side of the first ring beam 51 and the other side of the second ring beam 52, so as to facilitate the third ring beam 61 to move on the other side of the first ring beam 51 and the fourth ring beam 62 to move on the other side of the second ring beam 52.

[0107] Here, the second sliding groove 82 is perpendicular to the first sliding groove 81, so as to facilitate the movement of the corresponding ring beams in different directions, thereby adjusting the angle of the silencer to adapt to the direction of the airflow entering the exhaust chamber 1, so that the airflow can pass smoothly; for example, when the exhaust tower is built in the north-south direction, the first ring beam 51 and the second ring beam 52 need to move in the east-west direction, and the third ring beam 61 and the fourth ring beam 62 need to move in the north-south direction, and the ring beams above and below the silencer can move in different directions.

[0108] In an optional embodiment of the present invention, the above-mentioned diversion device may also include a first knob controller 71 , a second knob controller 72 , a first paddle controller 73 and a second paddle controller 74 .

[0109] like Figure 2 As shown, the first knob controller 71 is installed on the outside of the first ring beam 51, and the second knob controller 72 is installed on the outside of the second ring beam 52. The first knob controller 71 and the second knob controller 72 are both arranged close to the outside of the exhaust tower 100 and are respectively in spiral contact with one side of the first sliding groove 81; by rotating the first knob controller 71 and the second knob controller 72 simultaneously in the same direction, the first ring beam 51 and the second ring beam 52 are respectively driven to move in the first direction in the support frame.

[0110] The first paddle controller 73 is installed on the outside of the third ring beam 61, and the second paddle controller 74 is installed on the outside of the fourth ring beam 62. The first paddle controller 73 and the second paddle controller 74 are both arranged close to the outside of the exhaust tower 100 and are respectively engaged with one side of the second sliding groove 88; by simultaneously pushing the first paddle controller 73 and the second paddle controller 74 in the same direction, the third ring beam 61 and the fourth ring beam 62 are respectively driven to move in the second direction on the inner side of the first ring beam 51 and the second ring beam 52.

[0111] In an optional embodiment of the present invention, the noise reduction device may include a noise frequency monitor and a liftable box assembly. The noise frequency monitor is connected to an external control unit for real-time monitoring of the noise frequency in the exhaust chamber 1; the bottom of the liftable box assembly is fixedly connected to the inner wall 2 of the exhaust chamber, and the liftable box assembly is connected to the external control unit for communication; here, the noise frequency monitor may be a sound sensor.

[0112] The height of the liftable box assembly is controlled and adjusted by the noise frequency monitored and fed back by the noise frequency monitor, thereby improving the silencing effect of noises of different frequencies to reduce the noise level during exhaust. In this embodiment, a plurality of noise reduction devices can be evenly installed on the inner wall 2 of the exhaust chamber of the exhaust tower 100, and the plurality of noise reduction devices are evenly installed and fixed around the inner wall 2 of the exhaust chamber, and the interval between two adjacent noise reduction devices should be moderate to facilitate the installation of other devices.

[0113] Further, such as Figures 7 and 8 As shown, the liftable box assembly may include at least two layers of cavity plates, a top plate 14 and a base 18. The top plate 14 is disposed above the at least two layers of cavity plates and fixedly connected to the top cavity plate of the at least two layers of cavity plates; one side of the base 18 is above the at least two layers of cavity plates and fixedly connected to the bottom cavity plate, and the other side of the base 18 is fixedly connected to the inner wall 2 of the exhaust cavity; the at least two layers of cavity plates are sequentially sleeved, and the at least two layers of cavity plates are movably connected to each other, so that the overall height of the liftable box assembly can be adjusted, thereby increasing the area and / or volume of the entire liftable box assembly to absorb noise in the exhaust cavity 1, thereby improving the silencing effect.

[0114] Preferably, at least two layers of cavity plates may include a first cavity plate 15, a second cavity plate 16 and a third cavity plate 17; one side of the first cavity plate 15 is sleeved in the second cavity plate 16 and is movably connected to the inner wall of the second cavity plate 16, and the first cavity plate 15 can move up and down along the inner wall of the second cavity plate 16; one side of the second cavity plate 16 is sleeved in the third cavity plate 17, the second cavity plate 16 is movably connected to the inner wall of the third cavity plate 17, and the second cavity plate 16 can move up and down along the inner wall of the third cavity plate 17; preferably, the first cavity plate and the second cavity plate 16, and the second cavity plate 16 and the third cavity plate 17 can be matched and movably connected by slide rails and chains; more preferably, the heights of the first cavity plate 15, the second cavity plate 16 and the third cavity plate 17 increase successively.

[0115] When the noise frequency detected by the noise frequency monitor is small and there is no need to adjust the height of the cavity plate, the first cavity plate 15 and the second cavity plate 16 are controlled to shrink inward and are located in the third cavity plate 17. At this time, the height of the entire cavity plate extending outward is only the height of the third cavity plate 17; when the noise frequency detected by the noise frequency monitor is moderate or large and the height of the cavity plate needs to be adjusted, the first cavity plate 15 can be controlled to extend outward and be located above the second cavity plate 16 and / or the second cavity plate 16 can be controlled to extend outward and be located above the third cavity plate 17; by changing the height of the cavity plate, the area and / or volume of the entire cavity plate absorbing noise in the exhaust chamber 1 is increased, thereby improving the sound insulation effect of noises of different frequencies; preferably, the first cavity plate 15, the second cavity plate 16 and the third cavity plate 17 can all be foam aluminum plates to further improve the sound insulation effect.

[0116] In an optional embodiment of the present invention, the top plate 14 is a perforated plate, the perforation rate of the perforated plate is 1%-3%, and the aperture of the perforated plate is 0.5-1mm; here, the area of ​​the top plate 14 matches the area of ​​one side of the first cavity plate 15 to ensure that the top plate 14 can completely cover the first cavity plate 15 and be fixedly connected to the first cavity plate 15, forming a porous cavity structure after connection, further improving the sound insulation effect; preferably, the top plate 14 can be a perforated plate of a high-temperature resistant alloy such as nickel-chromium alloy, and the thickness of the top plate 14 can be 1mm.

[0117] In an optional embodiment of the present invention, the base 18 may include a hollow drawer structure 181 and a base connecting plate 182 fixedly connected to both sides of the drawer structure 181. The entire liftable box assembly is fixed to the inner wall 2 of the exhaust cavity by screwing the base connecting plates 182 on both sides to the inner wall 2 of the exhaust cavity.

[0118] Preferably, high-temperature resistant porous rock wool is installed in the cavity-type drawer structure 181, and the sound absorption capacity of the porous rock wool is installed and replaced to further improve the sound absorption effect; more preferably, the base 18 is coated with high-alumina concrete and magnesium bricks 19, the high-alumina concrete is coated on the outer wall of the base 18, and the magnesium bricks are attached to the periphery of the high-alumina concrete to achieve high-temperature resistance and sound absorption effects.

[0119] The exhaust system of the strong ablation test chamber provided by the above embodiment of the present invention specifically includes the following steps when being arranged and installed:

[0120] S10: Stuff the cavity-type drawer structure 181 with high-temperature resistant porous rock wool, and then install the entire liftable box assembly around the inner wall 2 of the exhaust cavity through the base connecting plate 182; multiple liftable box assemblies are installed at even intervals, and sufficient intervals are left for the installation of other components during installation.

[0121] S20: Install the thermistor and the spray device in the temperature control device according to the set temperature threshold; when the thermistor (R1, R2) and the spray device (P1, P2) need to be installed in the exhaust tower 100 according to the set temperature threshold, the thermistor and the spray device are installed in the reserved interval of the liftable box assembly, and the temperature-insensitive resistor (R3), the current sensing switch (K1, K2, K3), etc. are distributed in the inner wall 2 of the exhaust tower to avoid damage caused by high temperature.

[0122] S30: Place the guide device in the reserved space of the micro-perforated plate 13, and screw it to the inner wall 2 of the exhaust chamber through the first support bracket 10 and the second support bracket 11, and at the same time, point one end of the first knob controller 71, the second knob controller 72, the first paddle controller 73 and the second paddle controller 74 in the guide device toward the outside of the exhaust tower 100.

[0123] The exhaust system of the strong ablation test room provided by the embodiment of the present invention can reduce the temperature of the exhaust airflow and the noise of the exhaust airflow by arranging the temperature control device, the flow guide device and the noise reduction device in the exhaust system, thereby reducing the impact of high temperature and high dryness airflow on the environment and the surrounding. Specifically: through the cooperation of the thermistor, the spray device and the current sensing switch in the temperature control device, the cooling mode can be automatically adjusted according to the airflow temperature, so as to ensure that the airflow temperature entering the exhaust chamber 1 or the airflow temperature discharged from the exhaust chamber 1 is lower than the required temperature threshold; through the cooperation of the sliding groove of the flow guide device and the silencer, the silencer angle can be adjusted according to the airflow direction, so that the airflow can enter the silencer more easily to achieve gas diversion during exhaust and avoid gas backflow; through the cooperation of the liftable box assembly and the noise frequency monitor in the noise reduction device, the cavity plate of the liftable box assembly can be stretched or contracted according to the different frequency noises in the exhaust chamber 1 to increase the area and / or volume of the entire cavity plate in the liftable box assembly to absorb noise in the exhaust chamber 1, thereby improving the noise reduction effect of different frequency noises.

[0124] At this point, those skilled in the art should recognize that, although the exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

[0125] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. An exhaust system for a strong ablation test chamber, characterized in that: include: Exhaust tower (100); a temperature control device, the temperature control device being arranged in the exhaust chamber (1) of the exhaust tower (100) or in the air intake chamber (3) of the exhaust tower (100) and being used to adjust the temperature of the gas in the exhaust chamber (1) or in the air intake chamber (3); a flow guiding device, the flow guiding device being arranged in the exhaust chamber (1) of the exhaust tower (100) and being used for adjusting its own angle according to the flow direction of the gas entering the exhaust chamber (1) so as to guide the gas entering the exhaust chamber (1); and A noise reduction device, the noise reduction device being arranged on an exhaust chamber inner wall (2) of the exhaust chamber (1) and being used for adjusting its own height according to the monitored noise frequency of the exhaust tower (100) during exhaust so as to reduce the noise level during exhaust; in The flow guiding device comprises: A support frame, two sides of the support frame being fixedly connected to the inner wall (2) of the exhaust chamber; A sliding ring beam, wherein the sliding ring beam is disposed in the supporting frame, and two ends of the sliding ring beam are respectively slidably connected to two ends of the supporting frame; and A plurality of silencer pipes (4), the plurality of silencer pipes (4) being arranged in a matrix in the sliding ring beam, and the two ends of the plurality of silencer pipes (4) being respectively fixedly connected to the two ends of the sliding ring beam, and the angles of the plurality of silencer pipes (4) are adjusted by changing the moving direction of the sliding ring beam in the supporting frame to achieve the diversion of gas entering the exhaust chamber (1); and The sliding ring beam comprises: Outer ring beams are arranged in pairs, one side of a first ring beam (51) of the outer ring beams arranged in pairs is slidably connected to one end of the support frame, and one side of a second ring beam (52) of the outer ring beams arranged in pairs is slidably connected to the other end of the support frame; and Inner ring beams are arranged in pairs, one side of a third ring beam (61) in the inner ring beams arranged in pairs is slidably connected to the other side of the first ring beam (51), and the other side of the third ring beam (61) is fixedly connected to one end of the plurality of silencer pipes (4); one side of a fourth ring beam (62) in the inner ring beams arranged in pairs is slidably connected to the other side of the second ring beam (52), and the other side of the fourth ring beam (62) is fixedly connected to the other end of the plurality of silencer pipes (4).

2. The exhaust system of the strong ablation test chamber according to claim 1, characterized in that: The temperature control device comprises: A spray device, wherein the spray device is fixedly connected to the exhaust chamber inner wall (2) of the exhaust chamber (1) or the air inlet chamber inner wall (31) of the air inlet chamber (3), and the spray device is controlled to start and stop according to the monitored temperature of the gas entering the exhaust chamber (1) or the air inlet chamber (3) so as to adjust the gas temperature in the exhaust chamber (1) or the air inlet chamber (3).

3. The exhaust system of the strong ablation test chamber according to claim 2, characterized in that: The spray device comprises a first spray device (P1) and a second spray device (P2), wherein the first spray device (P1) and the second spray device (P2) are both fixedly connected to the inner wall (2) of the exhaust chamber, and the second spray device (P2) is arranged above the first spray device (P1) at a distance; or The first spray device (P1) is fixedly connected to the inner wall (31) of the air inlet cavity, and the second spray device (P2) is fixedly connected to the inner wall (13) of the channel partition at the bottom of the exhaust cavity (1) connected to the air inlet cavity (3).

4. The exhaust system of the strong ablation test chamber according to claim 3, characterized in that: The temperature control device also includes: A temperature control circuit, the temperature control circuit being arranged in the inner wall (2) of the exhaust chamber or on the inner wall (31) of the intake chamber, the temperature control circuit being electrically connected to the first spray device (P1) and the second spray device (P2) respectively, and being used for controlling the start and stop of the first spray device (P1) and the second spray device (P2) according to the monitored temperature of the gas entering the exhaust chamber (1) or the intake chamber (3).

5. The exhaust system of the strong ablation test chamber according to claim 4, characterized in that: The temperature control circuit comprises a power supply (D1), a first thermistor (R1), a second thermistor (R2), a third resistor (R3), a first current sensing switch (K1), a second current sensing switch (K2) and a third current sensing switch (K3); the first thermistor (R1) and the second thermistor (R2) are both arranged on the inner wall (2) of the exhaust cavity, or the first thermistor (R1) is arranged on the inner wall (31) of the intake cavity, and the second thermistor (R2) is arranged on the inner wall (13) of the channel partition; wherein: The first end of the third resistor (R3) is electrically connected to the power supply (D1), and the second end of the third resistor (R3) is electrically connected to the first end of the second current sensing switch (K2) and the first end of the third current sensing switch (K3) respectively; the second end of the second current sensing switch (K2) is electrically connected to the first spray device (P1); the second end of the third current sensing switch (K3) is electrically connected to the second spray device (P2); the first end of the first thermistor (R1) is electrically connected to the power supply (D1), the second end of the first thermistor (R1) is electrically connected to the first end of the second thermistor (R2), and is connected in parallel with the third resistor (R3); the first end of the first current sensing switch (K1) is electrically connected to the second end of the third resistor (R3), and the second end of the first current sensing switch (K1) is electrically connected to the second end of the second thermistor (R2).

6. The exhaust system of the strong ablation test chamber according to claim 1, characterized in that: A first sliding groove (81) is provided between one side of the first ring beam (51) and the support frame, and between one side of the second ring beam (52) and the support frame; A second sliding groove (82) is provided between one side of the third ring beam (61) and the other side of the first ring beam (51), and between one side of the fourth ring beam (62) and the other side of the second ring beam (52), and the second sliding groove (82) is perpendicular to the first sliding groove (81).

7. The exhaust system of the strong ablation test chamber according to claim 1, characterized in that: The noise reduction device comprises: a noise frequency monitor in communication with an external control unit; and A liftable box assembly, the bottom of which is fixedly connected to the inner wall (2) of the exhaust chamber, and the liftable box assembly is communicatively connected to the external control unit, and the height of the liftable box assembly is controlled and adjusted by the noise frequency monitored and fed back by the noise frequency monitor to reduce the noise level during exhaust.

8. The exhaust system of the strong ablation test chamber according to claim 7, characterized in that: The liftable box assembly comprises: At least two layers of cavity plates, wherein at least two layers of the cavity plates are sequentially nested; A top plate (14), the top plate (14) being a perforated plate, disposed above the at least two layers of the cavity plates and fixedly connected to the top cavity plate of the at least two layers of the cavity plates; and A base (18), one side of the base (18) being fixedly connected to at least two layers of the cavity plates and to the bottom cavity plate, and the other side of the base (18) being fixedly connected to the inner wall (2) of the exhaust cavity.

Images