CN109632875B - Thermal performance test system and method for simulating throwing cover pneumatic heating optical head cover - Google Patents
Thermal performance test system and method for simulating throwing cover pneumatic heating optical head cover Download PDFInfo
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- CN109632875B CN109632875B CN201811638894.1A CN201811638894A CN109632875B CN 109632875 B CN109632875 B CN 109632875B CN 201811638894 A CN201811638894 A CN 201811638894A CN 109632875 B CN109632875 B CN 109632875B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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Abstract
The invention discloses a thermal performance test system for simulating a throwing cover pneumatic heating optical head cover, and relates to the technical field of thermal performance test methods of optical head covers. The system of the present invention comprises: the optical head cover fixing device is used for fixing the optical head cover; heating means for heating the optical head cap; the heat insulation device is arranged between the optical head cover and the heating device and is in an opening state and a closing state, and when the heat insulation device is in the opening state, the optical head cover is heated by a heat source of the heating device; when the heat insulation device is in a closed state, the optical head cover and a heat source of the heating device are insulated; the servo driving device is used for driving the heat insulation device to be in an opening state and a closing state; the control device is used for controlling the heating device to start heating and controlling the heat insulation device to be opened and closed through the servo driving device; and the testing device is used for acquiring the testing data of the optical head cover. The invention also discloses a thermal performance test method of the thermal performance test system adopting the simulated throwing cover pneumatic heating optical head cover.
Description
Technical Field
The invention relates to the technical field of thermal performance test methods of optical head hoods, in particular to a thermal performance test system and method for simulating a throwing cover pneumatic heating optical head hood.
Background
With the technical development, the guided missile has various composite guidance modes, signals are transmitted to a processor through an optical head cover (made of quartz ceramic or optical glass) through the whole initial flight stage, the middle flight stage and the final flight stage of the guided missile, particularly through infrared, television and laser guidance at the final flight stage, and the thermal performance of the optical head cover and the thermal matching between the optical head cover and a metal shell of a guide head cabin are of great importance for signal transmission. Before the tail-end radar is ready to be started, in order to avoid the influence of high-speed airflow and external environment temperature on the guide head, a protective cover which can be thrown off is additionally arranged on the guide head, the protective cover is thrown off when the tail-end radar flies and is ready to be started close to a target radar, and the optical head cover starts to be pneumatically heated after the protective cover is thrown off. In order to ensure that the structure and the function of the optical head cover after being thrown are normal, a thermal performance test needs to be carried out on the optical head cover which is pneumatically heated after being thrown, and the thermal performance of the optical head cover and the thermal matching between the optical head cover and the metal shell of the guide head cabin are checked.
In the conventional thermal performance test of an optical head cover, the test method comprises the following steps: the first method is to immerse the optical head cover in high temperature oil at certain temperature for certain time and take out. And secondly, heating the optical head cover by using a quartz lamp tube, starting heating from room temperature, and carrying out rapid temperature rise and temperature reduction processes on the optical head cover. The third method is that the optical head cover is placed in the wind tunnel, the head is blocked by adopting a steel plate, after the wind tunnel meets the output requirement, the steel plate is withdrawn, and the optical head cover starts to be pneumatically heated. Both the method I and the method II can not effectively simulate the change process of the thermal environment before and after the cover is thrown; and the method III can simulate really and effectively, but needs to be developed in a wind tunnel and other auxiliary tools, and has high test cost.
Disclosure of Invention
The invention aims to overcome the defects of the background technology, and provides a thermal performance test system and a thermal performance test method for simulating a throwing cover pneumatic heating optical head cover, which can effectively detect the thermal performance of the optical head cover and the thermal matching between the optical head cover and a metal shell of a guide head cabin.
The invention provides a thermal performance test system for simulating a throwing cover pneumatic heating optical head cover, which comprises:
the optical head cover fixing device is used for fixing the optical head cover;
heating means for heating the optical head cap;
the heat insulation device is arranged between the optical head cover and the heating device and is in an opening state and a closing state, and when the heat insulation device is in the opening state, the optical head cover is heated by a heat source of the heating device; when the heat insulation device is in a closed state, the optical head cover and a heat source of the heating device are insulated;
the servo driving device is used for driving the heat insulation device to be in an opening state and a closing state;
the control device is used for controlling the heating device to start heating and controlling the heat insulation device to be opened and closed through the servo driving device;
and the testing device is used for acquiring the testing data of the optical head cover.
On the basis of the scheme, the servo driving device comprises a servo hydraulic actuator, the servo hydraulic actuator is used for being connected with the heat insulation device, and the opening and the closing of the heat insulation device are controlled in a closed loop mode through force or displacement.
On the basis of the scheme, a heat source of the heating device is a quartz lamp tube, and heating is controlled in a closed loop mode through temperature or heat flow.
On the basis of the scheme, the optical head cover fixing device, the heating device and the heat insulation device are designed in a structure and power matching mode according to the structural size and the heat load of the optical head cover.
On the basis of the scheme, the test data of the optical head cover comprises the temperature, the heat flow and the state of the heat insulation device of the optical head cover.
The invention provides a thermal performance test method of a thermal performance test system for simulating a throwing cover pneumatic heating optical head cover, which comprises the following steps:
the heat insulation device is in a closed state by default, and the heating device is controlled by the control device to reach a heat load peak value at the moment of throwing the optical head cover;
the control device controls the heat insulation device to be opened through the servo driving device, so that the optical head cover is heated by the heat source of the heating device;
test data of the optical head housing is collected by the test device.
On the basis of the scheme, the servo driving device comprises a servo hydraulic actuator, the servo hydraulic actuator is connected with the heat insulation device, and the heat insulation device is controlled to be opened and closed through force or displacement closed loops.
On the basis of the scheme, a heat source of the heating device is a quartz lamp tube, and heating is controlled in a closed loop mode through temperature or heat flow.
On the basis of the scheme, the optical head cover fixing device, the heating device and the heat insulation device are designed in a structure and power matching mode according to the structural size and the heat load of the optical head cover.
On the basis of the scheme, the test data of the optical head cover comprises the temperature, the heat flow and the state of the heat insulation device of the optical head cover.
Compared with the prior art, the invention has the following advantages:
1. the thermal performance test system for simulating the pneumatic heating optical head cover of the throwing cover, provided by the invention, can effectively simulate the change process of the thermal environment before and after the throwing cover of the optical head cover, and check the thermal performance of the optical head cover and the thermal matching between the optical head cover and the metal shell of the guide head cabin.
2. The system can be designed according to the matching of the product structure size and the heat load, the simulation cover throwing process is controlled through the force or displacement PID time sequence, and the response is quick and adjustable.
3. The system has simple structure and installation, short test preparation period and low manufacturing cost, and reduces the test cost to a certain extent.
Drawings
FIG. 1 is a schematic diagram of a first implementation of a thermal performance testing system for a simulated drop-off, pneumatically heated optical head cover, according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second implementation of a thermal performance testing system for a simulated drop-off, pneumatically heated optical head cover, in accordance with an embodiment of the present invention;
FIG. 3 is a block diagram of a coordinated control window of a first implementation of a thermal performance testing system for a simulated drop-off pneumatically heated optical head enclosure, in accordance with an embodiment of the present invention;
FIG. 4 is a diagram of a coordinated control window of a second implementation of a thermal performance testing system for a simulated drop-off pneumatically heated optical head enclosure, in accordance with an embodiment of the present invention.
In the figure, 1-optical head cover fixing device, 2-heating device, 3-heat insulation device, 4-optical head cover, 5-servo driving device, 6-control device and 7-testing device.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
An embodiment of the present invention provides a thermal performance testing system for simulating a parabolic pneumatic heating optical head cover, referring to a first implementation manner shown in fig. 1 and 3, including:
an optical head cover fixing device 1 for fixing an optical head cover 4;
a heating device 2 for heating the optical head cap 4;
the heat insulation device 3 is arranged between the optical head cover 4 and the heating device 2 and is in an opening state and a closing state, and when the heat insulation device 3 is in the opening state, the optical head cover 4 is heated by a heat source of the heating device 2; when the heat insulation device 3 is in a closed state, the optical head cover 4 is insulated from the heat source of the heating device 2;
the servo driving device 5 is used for driving the heat insulation device 3 to be in an opening state and a closing state;
the control device 6 is used for controlling the heating device 2 to start heating and controlling the heat insulation device 3 to be opened and closed through the servo driving device 5;
and the testing device 7 is used for collecting the testing data of the optical head cover 4.
The servo driving device 5 is arranged above the heat insulation device 3, and the servo driving device 5 controls the heat insulation device 3 to open and close by driving the heat insulation device 3 to ascend and descend.
In the embodiment of the invention, the control device 6 coordinates and synchronously controls the heat insulation device 3 to be opened and the heating device to be heated, in the process that the heating device is heated to the thermal environment before the cover is thrown, the heat insulation device 3 is closed by default, and the optical head cover 4 and the metal shell of the guide head cabin are not heated; when the heat insulation device 3 is opened, the optical head cover 4 and the metal shell of the guide head cabin begin to be heated, so that the thermal environment in the cover throwing process is effectively simulated, and the thermal performance of the optical head cover 4 and the thermal matching performance between the optical head cover 4 and the metal shell of the guide head cabin are effectively checked.
The embodiment of the invention provides a thermal performance test system for simulating a throwing cover pneumatic heating optical head cover 4, and referring to a second implementation mode shown in fig. 2 and 4, a servo driving device 5 is arranged on the side surface of a heat insulation device 3, and the servo driving device 5 drives the heat insulation device 3 to rotate around a rotating shaft for a certain angle so as to control the heat insulation device 3 to be opened and closed.
In a preferred embodiment, the servo drive means 5 comprise a servo hydraulic actuator for connecting the thermal insulation means 3, the opening and closing of the thermal insulation means 3 being controlled in a closed loop by a force or displacement. The opening and closing of the heat insulation device 3 can realize the PID time sequence control of the position through various tool forms and connection modes, and the response is quick and adjustable.
As a preferred embodiment, the heat source of the heating device is a quartz lamp tube, and the heating device can effectively simulate the thermal environment in the cover throwing process by controlling the heating through temperature or heat flow in a closed loop mode.
In a preferred embodiment, the optical head cover fixing device 1, the heating device 2 and the heat insulation device 3 are designed to be matched in structure and power according to the structural size and the heat load of the optical head cover 4. The method can be reasonably constructed according to the safety distance of personnel and equipment, has short test preparation period and low test cost, and can also be expanded to composite functional tests of other parts or system levels according to the same type of method.
In a preferred embodiment, the test data of the optical head cover 4 comprises the temperature of the optical head cover 4, the heat flow and the state of the heat insulation device 3, and the thermal performance of the optical head cover 4 and the thermal matching between the optical head cover 4 and the metal shell of the guide head cabin are effectively checked.
The embodiment of the invention also provides a thermal performance test method of the thermal performance test system adopting the simulated throwing cover pneumatic heating optical head cover, which comprises the following steps:
the heat insulation device 3 is in a closing state by default, and the heating device 2 is controlled by the control device 6 to reach the heat load peak value at the moment when the optical head cover 4 is thrown;
the control device 6 controls the heat insulation device 3 to be opened through the servo driving device 5; the optical head housing 4 is heated by the heat source of the heating device 2;
test data of the optical head housing 4 is collected by the test device 7.
The thermal performance test system for simulating the pneumatic heating optical head cover 4 of the throwing cover provided by the embodiment of the invention can effectively simulate the change process of the thermal environment before and after the throwing cover of the optical head cover 4 and check the thermal performance of the optical head cover 4 and the thermal matching between the optical head cover 4 and the metal shell of the guide head cabin.
In a preferred embodiment, the servo drive means 5 comprise a servo hydraulic actuator connected to the thermal insulation means 3, the opening and closing of the thermal insulation means 3 being controlled in a closed loop by a force or displacement. The opening and closing of the heat insulation device 3 can realize the PID time sequence control of the position through various tool forms and connection modes, and the response is quick and adjustable.
As a preferred embodiment, the heat source of the heating device is a quartz lamp tube, and the heating device can effectively simulate the thermal environment in the cover throwing process by controlling the heating through temperature or heat flow in a closed loop mode.
In a preferred embodiment, the optical head cover fixing device 1, the heating device 2 and the heat insulation device 3 are designed to be matched in structure and power according to the structural size and the heat load of the optical head cover 4. The method can be reasonably constructed according to the safety distance of personnel and equipment, has short test preparation period and low test cost, and can also be expanded to composite functional tests of other parts or system levels according to the same type of method.
In a preferred embodiment, the test data of the optical head cover 4 comprises the temperature of the optical head cover 4, the heat flow and the state of the heat insulation device 3, and the thermal performance of the optical head cover 4 and the thermal matching between the optical head cover 4 and the metal shell of the guide head cabin are effectively checked.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. A thermal performance test system for simulating a parabolic pneumatic heating optical head cover, comprising:
an optical head cover fixing device (1) for fixing an optical head cover (4);
a heating device (2) for heating the optical head housing (4);
the heat insulation device (3) is arranged between the optical head cover (4) and the heating device (2) and is in an opening state and a closing state, and when the heat insulation device (3) is in the opening state, the optical head cover (4) is heated by a heat source of the heating device; when the heat insulation device (3) is in a closed state, the optical head cover (4) is insulated from a heat source of the heating device (2);
the servo driving device (5) is used for driving the heat insulation device (3) to be in an opening state and a closing state;
the control device (6) is used for controlling the heating device (2) to start heating and controlling the heat insulation device (3) to be opened and closed through the servo driving device (5);
and the testing device (7) is used for acquiring the testing data of the optical head cover (4).
2. The system of claim 1, wherein: the servo driving device (5) comprises a servo hydraulic actuator, the servo hydraulic actuator is connected with the heat insulation device (3), and the opening and closing of the heat insulation device (3) are controlled in a closed loop mode through force or displacement.
3. The system of claim 1, wherein: the heat source of the heating device (2) is a quartz lamp tube, and heating is controlled in a closed loop mode through temperature or heat flow.
4. The system of claim 1, wherein: the optical head cover fixing device (1), the heating device (2) and the heat insulation device (3) are designed in a structure and power matching mode according to the structural size and the heat load of the optical head cover (4).
5. The system of claim 1, wherein: the test data of the optical head cover (4) comprises the temperature, the heat flow and the state of the heat insulation device (3) of the optical head cover (4).
6. A method of testing the thermal performance of a thermal performance testing system employing a simulated drop-off, pneumatically heated, optical head cover of claim 1, comprising the steps of:
the default of the heat insulation device (3) is in a closed state, and the control device (6) controls the heating device (2) to reach the heat load peak value at the moment when the optical head cover (4) is thrown;
the control device (6) controls the heat insulation device (3) to be opened through the servo driving device (5) so that the optical head cover (4) is heated by the heat source of the heating device (2);
test data of the optical head cover (4) are collected through the test device (7).
7. The method of claim 6, wherein: the servo driving device (5) comprises a servo hydraulic actuator, the servo hydraulic actuator is connected with the heat insulation device (3), and the heat insulation device (3) is controlled to be opened and closed in a closed loop mode through force or displacement.
8. The method of claim 6, wherein: the heat source of the heating device (2) is a quartz lamp tube, and heating is controlled in a closed loop mode through temperature or heat flow.
9. The method of claim 6, wherein: the optical head cover fixing device (1), the heating device (2) and the heat insulation device (3) are designed in a structure and power matching mode according to the structural size and the heat load of the optical head cover (4).
10. The method of claim 6, wherein: the test data of the optical head cover (4) comprises the temperature, the heat flow and the state of the heat insulation device (3) of the optical head cover (4).
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| CN201811638894.1A CN109632875B (en) | 2018-12-29 | 2018-12-29 | Thermal performance test system and method for simulating throwing cover pneumatic heating optical head cover |
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