CN209927351U - Quick switching device for testing output performance of pressure sensor - Google Patents
Quick switching device for testing output performance of pressure sensor Download PDFInfo
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- CN209927351U CN209927351U CN201920677664.XU CN201920677664U CN209927351U CN 209927351 U CN209927351 U CN 209927351U CN 201920677664 U CN201920677664 U CN 201920677664U CN 209927351 U CN209927351 U CN 209927351U
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Abstract
The utility model discloses a test pressure sensor output performance's quick change device aims at providing a clamping convenient and fast, uses reliable quick change device. The utility model discloses a following technical scheme realizes: the pressure sensor comprises a Pi-shaped base, wherein a first connecting pipe and a second connecting pipe which are parallel and mutually communicated are fixedly connected to the Pi-shaped base, adapters which are arranged at intervals according to linear arrays are fixedly connected to a crossbeam pipe platform of the first connecting pipe, vent pipes which are arranged at intervals according to the linear arrays are fixedly connected to a crossbeam pipe platform of the second connecting pipe, each adapter and each vent pipe take a stepped cylinder of the adapter as a male connector, and each male connector is combined with a female connector in a male-female mode to form a quick-change connector combination connected with a pressure sensor; an external detection air source enters the first connecting pipe and the second connecting pipe through a connecting pipe nozzle fixedly connected to the end part of the first connecting pipe, air flow is ventilated through a quick-change connector combination quick-plug quick-change connection pressure sensor communicated with the beam pipe, and the output performance test of the pressure sensor is completed.
Description
Technical Field
The utility model relates to a flight equipment tests technical field, especially relates to a test pressure sensor's output test quick change device.
Background
The pressure sensor is composed of an elastomer made of special process materials, a resistance strain gauge and a temperature compensation circuit, is connected in an unbalanced bridge mode, and is sealed in the elastomer finally. Pressure sensors, the most common type of sensor, have many characteristics, and the characteristics of pressure sensors can be generally classified into static characteristics and dynamic characteristics. The static characteristic of the pressure sensor means that the output quantity and the input quantity of the pressure sensor have a correlation with respect to a static input signal. The static characteristic of the pressure sensor means that the output quantity and the input quantity of the sensor have a correlation with respect to a static input signal. The static characteristics of the sensor can be described by an algebraic equation without time variables or by a characteristic curve drawn by plotting the input quantities as abscissa and the corresponding output quantities as ordinate. The main parameters characterizing the static behavior of the sensor are: linearity, sensitivity, hysteresis, repeatability, drift, etc. The dynamic characteristics of a pressure sensor refer to the characteristics of the output of the pressure sensor as its input changes. In actual operation, the dynamics of a pressure sensor are often represented by its response to some standard input signal. This is because the response of a pressure sensor to a standard input signal is easy to determine experimentally, and there is a relationship between its response to a standard input signal and its response to any input signal. The dynamic characteristics must be measured by dynamically calibrating experimental data in its dynamic model hand. The standard on which pressure sensor performance testing is based is GB/T15478-1995, which specifies test conditions, test items and test methods for pressure sensor performance. The test of the pressure sensor mainly refers to a temperature output characteristic test and a pressure output characteristic test. The temperature output characteristic test mainly refers to the influence of the pressure sensor on the output of the sensor under different temperature conditions, and mainly refers to zero temperature drift and sensitivity temperature drift; the pressure output characteristic is the output characteristic of the pressure reflected by different pressures under the same environmental condition of the sensor, and is mainly used for measuring the static characteristic index of the sensor. Under a certain environmental condition (provided by a high-low temperature environmental test box), a pressure sensor to be measured measures signals generated by a pressure source (a piston type pressure gauge or a digital pressure controller) after being powered by a power supply, and the signals generated after measurement are finally transmitted to a display device (a computer) for displaying and recording through a measuring circuit (a multi-channel data acquisition unit).
The pressure sensor is a sensor installed inside an airplane, and before assembly, the output performance of the pressure sensor is tested and the performance is respectively tested in a high-temperature environment and a low-temperature environment. In the prior art, in order to realize the test function, the pressure sensor is fixedly connected with the connecting pipe through the adapter, but in the using process, the clamping mode is difficult to operate, low in efficiency and unreliable in use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the weak point of clamping inefficiency to prior art, provide a clamping convenience, use reliable pressure sensor output test quick change device.
The utility model provides a technical scheme that its technical problem adopted is, a test pressure sensor output performance's quick change device, include: the support is connected on pi shape base admittedly, connects the crossbeam pipe 11 of outside detection air supply, its characterized in that: the pi-shaped base 114 is fixedly connected with two first connecting pipes 113 and two second connecting pipes 112 which are parallel and mutually communicated, wherein the cross beam pipe 11 platform of the first connecting pipe 113 is fixedly connected with adapters 115 which are arranged at intervals according to linear arrays, the cross beam pipe 11 platform of the second connecting pipe 112 is fixedly connected with vent pipes 116 which are arranged at intervals according to linear arrays, each adapter 115 and each vent pipe 116 use a stepped barrel of the adapter 115 as a male connector 212, and each male connector 212 and a female connector 211 are combined in a male-female mode to form a quick-change connector combination 21 connected with the pressure sensor 31; an external detection air source enters the first connecting pipe 113 and the second connecting pipe 112 through a connecting pipe nozzle 111 fixedly connected to the end of the first connecting pipe 113, air flow is ventilated through a quick-insert quick-change connection pressure sensor of a quick-change connector combination 21 communicated with the beam pipe 11, and the output performance test of the pressure sensor is completed.
The utility model discloses compare and have following beneficial effect in prior art:
the clamping is convenient. The utility model discloses connect external air source in filler pipe mouth, pressure sensor connects in female joint, and female joint is the quick change structure with male joint, during the installation, only needs to aim at male joint with female joint, down press can install, during the dismantlement, only need press the ring cover of female joint one end hard, can dismantle easy operation, the clamping is convenient. The quick-change joint combination 21 provides a reliable and efficient connection for the device.
The use is reliable. The utility model discloses a male joint connects in the adapter, and the quick change coupler combination that female joint connects pressure sensor's negative and positive combination constitution can realize the quick change combination, and quick clamping, air current insert the quick change soon through the quick change coupler combination 21 of intercommunication crossbeam pipe 11 and connect pressure sensor and realize ventilating, accomplishes pressure sensor output performance test, has solved prior art pressure sensor and has passed through the adapter and has linked firmly the connecting pipe, and the clamping is loaded down with trivial details, the difficult, inefficient, the unreliable problem of use. Adopt O type sealing washer to guarantee between negative and positive joint airtight, stable in structure, and the material can use under high low temperature environment, has avoided the technical problem of device gas leakage under high low temperature environment among the prior art.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is the three-dimensional structure schematic diagram of the quick-change device for testing the output performance of the pressure sensor of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is an exploded view of the female connector and the pressure sensor.
Fig. 4 is a use state reference diagram of fig. 1.
In the figure: 11 beam pipes, 111 pipe connecting nozzles, 112 second connecting pipes, 113 first connecting pipes, 114 pi-shaped bases, 115 adapters, 116 vent pipes, 21 quick-change connector combinations, 211 female connectors, 212 male connectors and 31 pressure sensors.
Detailed Description
See fig. 1-4. In an embodiment described below, a fast-acting apparatus for testing the output performance of a pressure sensor includes: the support is fixedly connected on the Pi-shaped base 114 and is connected with a beam tube 11 of an external detection air source. Wherein: the pi-shaped base 114 is fixedly connected with a first connecting pipe 113 and a second connecting pipe 112 which are parallel and mutually communicated, wherein the cross beam pipe 11 platform of the first connecting pipe 113 is fixedly connected with adapters 115 which are arranged at intervals according to linear arrays, the orientations of the adapters 115 are consistent, the cross beam pipe 11 platform of the second connecting pipe 112 is fixedly connected with vent pipes 116 which are arranged at intervals according to linear arrays, each adapter 115 and each vent pipe 116 use a stepped cylinder of the adapter 115 as a male connector 212, and each male connector 212 and a female connector 211 are combined in a male-female mode to form a quick-change connector combination 21 connected with the pressure sensor 31; an external detection air source enters the first connecting pipe 113 and the second connecting pipe 112 through a connecting pipe nozzle 111 fixedly connected to the end of the first connecting pipe 113, air flow is ventilated through a quick-insert quick-change connection pressure sensor of a quick-change connector combination 21 communicated with the beam pipe 11, and the output performance test of the pressure sensor is completed.
The first and second connection pipes are cylindrical, and the second connection pipe 112 has a length greater than that of the first connection pipe 113.
The vent pipe 116 is connected with the first connecting pipe 113 and the second connecting pipe 112, and the middle of the first connecting pipe and the second connecting pipe is fixedly connected with the vent pipe through welding to form a same cavity. So that the two cavities are the same. The adapters 115 are all disposed on the connecting pipe and are oriented in the same direction.
The male connector 212 is connected to the adapter 115, and the female connector 211 is connected to the pressure sensor 31.
Preferably, in the quick-change connector assembly 21, an O-ring seal is used between the female connector 211 and the male connector 212 to ensure air tightness. An external detection air source enters air through a connecting pipe nozzle 111 fixedly connected to the end of the first connecting pipe, flows into each adapter 115, enters a female connector 211 through a male connector 212, and then enters the pressure sensor 31, so that rapid clamping is realized. The adapters are fixedly connected to the cross beam pipe platform at intervals in a linear array. The male connector and the female connector are combined in a male-female mode to form a quick-change connector combination connected with the pressure sensor.
The first connecting pipe and the second connecting pipe are aligned in parallel, the vent pipe and the filler neck are aligned in parallel, and the adapter is perpendicular to the bottom surface; the other end of the filler neck is fixedly connected with an external testing air source through threads; the other end of the adapter is fixedly connected with a male joint through threads; an external air source enters air through the filler neck 111, flows into each adapter 115, enters the female connector 211 through the male connector 212, and then enters the pressure sensor 31, and finally quick clamping is achieved.
While the foregoing has described preferred embodiments of the present invention, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A quick-change device for testing the output performance of a pressure sensor, comprising: the support is connected firmly on pi shape base (114), connects crossbeam pipe (11) of outside detection air supply, its characterized in that: the pressure sensor comprises a pi-shaped base (114), wherein a first connecting pipe (113) and a second connecting pipe (112) which are parallel and mutually communicated are fixedly connected to the pi-shaped base (114), adapters (115) which are arranged at intervals according to linear arrays are fixedly connected to a platform of a beam pipe (11) of the first connecting pipe (113), vent pipes (116) which are arranged at intervals according to the linear arrays are fixedly connected to a platform of a beam pipe (11) of the second connecting pipe (112), each adapter (115) and each vent pipe (116) are used as a male connector (212) by using a stepped cylinder of the adapter (115) and each vent pipe (116), and each male connector (212) is in male-female combination with a female connector (211) to form a quick-change connector combination (21) which is connected with; an external detection air source enters the first connecting pipe (113) and the second connecting pipe (112) through a connecting pipe nozzle (111) fixedly connected to the end of the first connecting pipe (113), air flow is communicated through a quick-change connector combination (21) communicated with the beam pipe (11) to quickly insert and quickly change the connection of the pressure sensor, and the output performance test of the pressure sensor is completed.
2. The fast apparatus for testing the output performance of a pressure sensor as recited in claim 1, wherein: the first connecting pipe and the second connecting pipe are cylinders, and the length of the second connecting pipe is larger than that of the first connecting pipe.
3. The fast apparatus for testing the output performance of a pressure sensor as recited in claim 1, wherein: the middle of the vent pipe (116) connected with the first connecting pipe (113) and the second connecting pipe (112) is fixedly connected with a vent pipe through welding to be communicated into the same cavity.
4. The fast apparatus for testing the output performance of a pressure sensor as recited in claim 1, wherein: in the quick-change connector combination (21), an O-shaped sealing ring is adopted between the female connector (211) and the male connector (212) to ensure air tightness.
5. The fast apparatus for testing the output performance of a pressure sensor as recited in claim 1, wherein: an external detection air source enters air through a connecting pipe nozzle (111) fixedly connected to the end portion of the first connecting pipe, flows into each adapter (115), enters the female connector (211) through the male connector (212), and then enters the pressure sensor (31), so that rapid clamping is achieved.
6. The fast apparatus for testing the output performance of a pressure sensor as recited in claim 1, wherein: and the male connector and the female connector are combined in a male-female mode to form a quick-change connector combination connected with the pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677664.XU CN209927351U (en) | 2019-05-13 | 2019-05-13 | Quick switching device for testing output performance of pressure sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920677664.XU CN209927351U (en) | 2019-05-13 | 2019-05-13 | Quick switching device for testing output performance of pressure sensor |
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| CN209927351U true CN209927351U (en) | 2020-01-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413027A (en) * | 2020-04-22 | 2020-07-14 | 太原航空仪表有限公司 | Accelerated degradation test method for pressure annunciator |
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2019
- 2019-05-13 CN CN201920677664.XU patent/CN209927351U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413027A (en) * | 2020-04-22 | 2020-07-14 | 太原航空仪表有限公司 | Accelerated degradation test method for pressure annunciator |
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