A rotary sliding disc pressure electronic scanning valve

Abstract

The present invention discloses a rotary sliding disc pressure electronic scanning valve, which comprises a mounting bracket with a hollow cavity inside, a rotary driving member arranged in the hollow cavity, a rotating disc driven by the rotary driving member to rotate and switch between a first position state or a second position state, a front end cover wrapping the rotating disc, and a plurality of pressure sensor assemblies annularly embedded in the mounting bracket; a plurality of first air guide needle tubes and a second air guide needle tube are arranged on the front end cover, a first group of channels connected to the pressure sensor assembly in a one-to-one correspondence are arranged in the mounting bracket, a second group of channels connected to the first group of channels in a one-to-one correspondence are arranged in the rotating disc, and a third group of channels connected to all the first group of channels and connected to the second air guide needle tube are arranged. The present invention can realize the automatic switching between the pressure detection state and the sensor calibration state, realize the online automatic calibration, and greatly improve the accuracy and reliability of the pressure detection.

Description

[Technical field]

[0001] The invention belongs to the technical field of pressure detection, and in particular relates to a rotary sliding disc type pressure electronic scanning valve. [Background technology]

[0002] The pressure scanning valve is a type of multi-channel pressure scanning measurement equipment. It is an intelligent sensor device used to realize real-time measurement of multi-channel pressure signals. It is widely used in wind tunnels, impellers, engines, and propulsion track tests. Currently, the commonly used pressure scanning valves or similar products are mostly 16-channel pressure data measurements. There are generally disadvantages such as large product size, many accessories, inconvenient installation, and slow scanning speed. It is urgent to develop a pressure scanning measurement device with high integration, miniaturization, fast scanning, and accurate pressure measurement.

[0003] In the prior art, CN201920362403.9 is a multi-channel pressure scanning and control device. Although it can measure the pressure data of 64 channels, it cannot open or block the pressure measurement channel according to the measurement requirements, especially in some occasions where the measurement accuracy is very high. Therefore, the pressure sensor needs to be calibrated multiple times during the high-precision measurement process. The patented technical method cannot calibrate the sensor online, and it is impossible to obtain a reliable conclusion on whether the sensor detection result is accurate; but no matter what method is used to calibrate the sensor, it is necessary to input a reference pressure source for verification and calibration, and the pressure scanning and control equipment in the prior art does not realize the switching between the sensor calibration state and the test state, and cannot realize online automatic calibration.

[0004] Therefore, it is necessary to provide a new rotary sliding disc pressure electronic scanning valve to solve the above problems. [Summary of the invention]

[0005] The main purpose of the present invention is to provide a rotary sliding disk pressure electronic scanning valve with a small overall structure, which can realize 64-channel pressure data measurement and can automatically switch between the pressure detection state and the sensor calibration state according to the measurement requirements, realize online automatic calibration, greatly improve the accuracy and reliability of pressure detection, and can meet the pressure test in more situations.

[0006] The present invention achieves the above-mentioned purpose through the following technical scheme: a rotating sliding disk type pressure electronic scanning valve, which includes a mounting bracket, a plurality of pressure sensor assemblies annularly distributed on the outer peripheral surface of the mounting bracket, a circuit board connected to the circuit of the pressure sensor assembly, a front end cover with a plurality of gas guide needle tubes arranged on the surface, and a rotating disk that performs rotational motion and rotates and switches between a first position state or a second position state, the gas guide needle tubes include a plurality of first gas guide needle tubes and a second gas guide needle tube, a first group of channels connected to the pressure sensor assemblies in a one-to-one manner is arranged in the mounting bracket, a second group of channels connected to the first group of channels in a one-to-one manner is arranged in the rotating disk in the first position state, and a third group of channels connected to all of the first group of channels and connected to the second gas guide needle tube in the second position state.

[0007] Furthermore, the mounting bracket is a hollow octagonal block structure or a quadrangular block structure, and the outer surface of the mounting bracket is provided with eight or four receiving grooves at equal angles, and one or two pressure sensor assemblies are installed in each of the receiving grooves.

[0008] Furthermore, one end of the first group of channels extends to the inner wall surface of the storage groove and is connected to the detection port of the pressure sensor assembly, and the other end extends to the front end surface of the mounting bracket and is connected to the second group of channels or the third group of channels on the rotating disk in a one-to-one manner.

[0009] Furthermore, the mounting bracket is also provided with a fourth group of channels which are connected one-to-one with the back pressure cavity of each pressure sensor assembly, and the other end of the fourth group of channels extends to the front end surface of the mounting bracket, and all the fourth group of channels are connected together internally through channels.

[0010] Furthermore, a third gas guide needle tube and a fourth gas guide needle tube are provided on the front end cover, and a first connecting channel for connecting the fourth group of channels with the third gas guide needle tube in the first position state and a second connecting channel for connecting the fourth group of channels with the fourth gas guide needle tube in the second position state are provided in the rotating disk.

[0011] Furthermore, the first air guide needle tubes are provided in 64 numbers, and the corresponding pressure sensor assemblies are provided in eight groups, and each group is connected to eight first air guide needle tubes.

[0012] Furthermore, a fifth group of channels corresponding one-to-one to the fourth group of channels and distributed radially is provided in the mounting bracket, and all the fifth group of channels are connected uniformly through an annular loop, and the annular loop is arranged around the periphery of the first group of channels to avoid interference with the first group of channels.

[0013] Furthermore, the interior of the mounting bracket is a hollow structure and forms a hollow cavity, a rotating drive component is provided in the hollow cavity, and the rotating shaft of the rotating drive component passes through the front end surface of the mounting bracket and is connected to the rotating disk to realize the rotational motion drive of the rotating disk.

[0014] Furthermore, a reducing joint is provided between the mounting bracket and the rotating disk, and a sixth group of channels is provided on the reducing joint, which are connected to the first group of channels and the fourth group of channels in a one-to-one correspondence, and the sixth group of channels are gradually distributed in a concentrated trend from the front end face to the rear end face of the reducing joint.

[0015] Furthermore, a plurality of limiting columns are arranged on the inner surface of the front end cover, waist-shaped holes corresponding to the limiting columns are arranged on the surface of the rotating disk, and the ends of the limiting columns are inserted into the waist-shaped holes to limit the rotation angle range of the rotating disk.

[0016] Compared with the prior art, the beneficial effects of the rotary sliding disk pressure electronic scanning valve of the present invention are: the automatic switching of the detection state and the sensor calibration state is realized by driving the rotating disk by the driving module, and the automatic calibration in the detection process is realized, thereby improving the accuracy of pressure detection and the reliability of the detection result; and through the eight groups of pressure sensor components distributed in an annular manner, in conjunction with the mounting bracket and the internal channel design of the rotating disk, 64-way gas guide needle tubes are connected to the corresponding 64 pressure sensors, thereby realizing multi-channel pressure testing; the gas guide needle tubes installed on the front end cover, the corresponding channels inside the rotating disk and the channels in the mounting bracket are connected through the reducer, and the concentrated change in distribution density is realized, which can reduce the overall structural volume of the mounting bracket, thereby reducing the overall size of the pressure scanning valve, realizing miniaturization design, and expanding the scope of application.

Brief Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the present invention from one angle;

[0019] Figure 3 It is a schematic diagram of the explosion structure from another angle of an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the mounting bracket according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the mounting bracket at another angle according to an embodiment of the present invention;

[0022] Figure 6 is a cross-sectional view in an embodiment of the present invention;

[0023] Figure 7 A schematic diagram of the structure of the front end cover in an embodiment of the present invention;

[0024] Figure 8 It is a structural schematic diagram of a rotating disk in an embodiment of the present invention;

[0025] Fig. 9 It is a schematic diagram of a horizontal cross-sectional structure of a rotating disk in an embodiment of the present invention;

[0026] The numbers in the figure represent:

[0027] 100 rotation sliding disc pressure electronic scanning valve;

[0028] 1 mounting bracket, 11 hollow cavity, 12 first set of channels, 13 storage slot, 14 fourth set of channels, 15 fifth set of channels; 2 rotating drive member; 3 rotating disk, 31 second set of channels, 32 third set of channels, 33 first connecting channel, 34 waist-shaped hole, 35 second connecting channel, 36 horizontal connecting channel; 4 front end cover, 41 first air guide needle tube, 42 second air guide needle tube, 43 third air guide needle tube, 44 fourth air guide needle tube, 45 limiting column; 5 pressure sensor assembly; 6 circuit board; 7 connector joint; 8 rear end cover, 81 mounting lock hole; 9 reducer, 91 sixth set of channels. [Specific implementation method]

[0029] Embodiment 1:

[0030] Please refer to Figure 1-Figure 9 The present embodiment is a rotary sliding disc type pressure electronic scanning valve 100, which comprises a mounting bracket 1 with a hollow cavity 11 inside, a rotary driving member 2 arranged in the hollow cavity 11, a rotary disc 3 driven by the rotary driving member 2 to rotate and switch between a first position state and a second position state, a front end cover 4 covering the rotary disc 3, a plurality of pressure sensor assemblies 5 distributed in an annular manner and embedded on the outer peripheral surface of the mounting bracket 1, a circuit board 6 connected to the pressure sensor assemblies 5 in circuit, and a connector joint 7 connected to the circuit board 6 in circuit; a plurality of first air guide needle tubes 41 and second air guide needle tubes 42 are arranged on the front end cover 4, a first group of channels 12 connected to the pressure sensor assemblies 5 in a one-to-one correspondence is arranged in the mounting bracket 1, a second group of channels 31 connected to the first group of channels 12 in a one-to-one correspondence in the first position state, and a third group of channels 32 connected to all the first group of channels 12 and connected to the second air guide needle tubes 42 in a second position state.

[0031] The third group of channels 32 connects each channel in a unified manner through a plurality of horizontal connecting channels 36 .

[0032] In the first position, the first air guide needle tube 41 on the front cover 4 is connected with the second group of channels 31 in the rotating disk 3, and the second group of channels 31 are connected with the first group of channels 12 in the mounting bracket 1 in a one-to-one correspondence, thereby realizing a one-to-one correspondence between the first air guide needle tube 41 and the pressure sensor assembly 5, and maintaining the pressure detection state; in the second position, the second air guide needle tube 42 on the front cover 4 is connected with the third group of channels 32 in the rotating disk 3, and the third group of channels 32 are connected with the first group of channels 12 in a one-to-one correspondence, and then unifiedly connected through channels inside the rotating disk 3, thereby connecting all the first group of channels 12, realizing a connection between the second air guide needle tube 42 and all pressure sensor assemblies 5, and maintaining the sensor calibration state.

[0033] In this embodiment, the mounting bracket 1 is a hollow octagonal three-dimensional block structure, and eight receiving grooves 13 are arranged at equal angles on the outer peripheral surface of the mounting bracket 1. A pressure sensor assembly 5 is installed in each receiving groove 13. One end of the first group of channels 12 extends to the inner wall surface of the receiving groove 13 and is correspondingly connected to the detection end of the pressure sensor assembly 5, and the other end extends to the front end surface of the mounting bracket 1 and is connected to the second group of channels 31 or the third group of channels 32 on the rotating disk 3 in a one-to-one correspondence. The mounting bracket 1 is also provided with a fourth group of channels 14 that are connected to the back pressure cavity of each pressure sensor assembly 5 in a one-to-one correspondence. The other end of the fourth group of channels 14 extends to the front end surface of the mounting bracket 1, and all the fourth group of channels 14 are connected together through channels inside. A third air guide needle tube 43 and a fourth air guide needle tube 44 are arranged on the front cover 4, and a first connecting channel 33 is arranged in the rotating disk 3 to realize the connection between the fourth group of channels 14 and the third air guide needle tube 43 in the first position state, and a second connecting channel 35 is arranged to realize the connection between the fourth group of channels 14 and the fourth air guide needle tube 44 in the second position state. The fourth group of channels 14 is connected with the third air guide needle tube 43 through the first connecting channel 33, and the standard atmospheric pressure is introduced through the third air guide needle tube 43 to provide a reference for the pressure sensor assembly 5 in the detection state; the fourth group of channels 14 is connected with the fourth air guide needle tube 44 through the second connecting channel 35, and the standard atmospheric pressure is introduced through the fourth air guide needle tube 44 to provide a reference for the pressure sensor assembly 5 in the calibration state, and provide standard atmospheric pressure in the back pressure chamber of the pressure sensor assembly 5 in the calibration state to calibrate the pressure sensor, thereby improving the accuracy of the pressure sensor.

[0034] In other embodiments, the mounting bracket 1 can be configured as a hollow quadrangular solid block structure, and the outer peripheral surface of the mounting bracket 1 is provided with four receiving grooves 13 at equal angles, and two pressure sensor assemblies 5 are installed in each receiving groove 13. The mounting bracket 1 can also be configured as a hexagonal solid block structure, and the shape of the mounting bracket 1 is not limited in this solution.

[0035] In this embodiment, 64 first air guide needle tubes 41 are provided, and corresponding pressure sensor assemblies 5 are provided in eight groups, each group correspondingly connecting eight first air guide needle tubes 41. In other embodiments, the first air guide needle tubes 41 can also be provided in 16 to 100 numbers, such as 50, 60, 70, 80, etc., which can be flexibly designed in accordance with the shape of the mounting bracket 1, and this solution is not limited thereto.

[0036] The mounting bracket 1 is provided with a fifth group of channels 15 corresponding to the fourth group of channels 14 and distributed radially, and all the fifth group of channels 15 are connected uniformly through an annular loop, thereby achieving uniform connection of the fourth group of channels 14. The annular loop is arranged around the outer periphery of the first group of channels 12, thereby avoiding interference with the first group of channels 12.

[0037] A protective shell (not shown) is also sleeved on the outer periphery of the mounting bracket 1, which encloses the pressure sensor assembly 5. A rear end cover 8 is provided at the tail end of the mounting bracket 1, and the circuit board 6 is placed in the rear end cover 8. The connector joint 7 is provided on the outer surface of the rear end cover 8. The rear end cover 8, the circuit board 6, and the outer periphery of the mounting bracket 1 are provided with corresponding mounting lock holes 81 in an annular manner, and the bolt axis passes through the mounting lock hole 81 to lock them together.

[0038] In order to reduce the overall size of the pressure scanning valve, a reducing section 9 is further provided between the mounting bracket 4 and the rotating disk 3. The reducing section 9 is provided with a sixth group of channels 91 which are connected to the first group of channels 12 and the fourth group of channels 14 in a one-to-one correspondence. The sixth group of channels 91 are gradually distributed in a concentrated trend from the front end face to the rear end face of the reducing section 9, so that the channels in the mounting bracket 1 can be made more concentrated, thereby reducing the overall size of the mounting bracket 1.

[0039] The inner surface of the front cover 4 is provided with a plurality of limiting posts 45 , and the surface of the rotating disk 3 is provided with waist-shaped holes 34 corresponding to the limiting posts 45 . The ends of the limiting posts 45 are inserted into the waist-shaped holes 34 to limit the rotation angle range of the rotating disk 3 .

[0040] The rotary drive member 2 is a micro motor.

[0041] The present embodiment is a rotating sliding disk type pressure electronic scanning valve 100, which realizes automatic switching between the detection state and the sensor calibration state by driving the rotating motion of the rotating disk with a micro motor, thereby improving the automatic testing capability of the pressure electronic scanning valve, realizing automatic calibration during the detection process, and further improving the accuracy of pressure detection and the reliability of the detection result; and through eight groups of pressure sensor components distributed in an annular manner, in conjunction with the mounting bracket and the internal channel design of the rotating disk, 64 gas guide needle tubes are connected to the corresponding 64 pressure sensors, thereby realizing multi-channel pressure testing; the gas guide needle tubes installed on the front end cover, the corresponding channels inside the rotating disk and the channels inside the mounting bracket are connected one by one through the reducer, and concentrated changes in distribution density are realized, which can reduce the overall structural volume of the mounting bracket, thereby reducing the overall size of the pressure scanning valve, realizing a miniaturized design, and expanding the scope of application.

[0042] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A rotary sliding disc pressure electronic scanning valve, Features: The invention comprises a mounting bracket, a plurality of pressure sensor assemblies annularly distributed on the outer peripheral surface of the mounting bracket, a circuit board connected to the circuit of the pressure sensor assembly, a front end cover provided with a plurality of air guide needle tubes on the surface, and a rotating disk that performs rotational motion and performs rotational switching between a first position state or a second position state, wherein the air guide needle tubes include a plurality of first air guide needle tubes and a second air guide needle tube, a first group of channels connected to the pressure sensor assemblies in a one-to-one correspondence are provided in the mounting bracket, a second group of channels connected to the first group of channels in a one-to-one correspondence are provided in the rotating disk in the first position state, and all the first group of channels are connected to each other in the second position state. A third group of channels connected to the second air guide needle tube; a plurality of receiving grooves are arranged at equal angles on the outer surface of the mounting bracket, and the pressure sensor assembly is installed in each of the receiving grooves; one end of the first group of channels extends to the inner wall surface of the receiving groove and is connected to the detection port of the pressure sensor assembly, and the other end extends to the front end surface of the mounting bracket and is connected to the second group of channels or the third group of channels on the rotating disk in a one-to-one correspondence; a fourth group of channels is also arranged in the mounting bracket and is connected to the back pressure cavity of each pressure sensor assembly in a one-to-one correspondence, and the other end of the fourth group of channels extends to the front end surface of the mounting bracket, and all of the fourth group of channels are connected together internally through channels.

2. The rotary sliding disc pressure electronic scanning valve according to claim 1, Features: The mounting bracket is an octagonal solid block structure or a quadrangular solid block structure, and the outer peripheral surface of the mounting bracket is provided with eight or four receiving grooves at equal angles, and one or two pressure sensor components are installed in each of the receiving grooves.

3. The rotary sliding disc pressure electronic scanning valve according to claim 1, Features: A third gas guide needle tube and a fourth gas guide needle tube are arranged on the front end cover, and a first connecting channel is arranged in the rotating disk for realizing communication between the fourth group of channels and the third gas guide needle tube in the first position state, and a second connecting channel is arranged in the rotating disk for realizing communication between the fourth group of channels and the fourth gas guide needle tube in the second position state.

4. The rotary sliding disc pressure electronic scanning valve according to claim 1, Features: There are 64 first air guide needle tubes, and eight corresponding pressure sensor assemblies are provided, and each group is connected to eight first air guide needle tubes.

5. The rotary sliding disc pressure electronic scanning valve according to claim 1, Features: A fifth group of channels corresponding to the fourth group of channels and distributed radially are arranged in the mounting bracket, and all the fifth group of channels are connected to each other through an annular loop, which is arranged around the outer periphery of the first group of channels to avoid interference with the first group of channels.

6. The rotary sliding disc pressure electronic scanning valve according to claim 1, Features: The interior of the mounting bracket is a hollow structure and forms a hollow cavity. A rotating drive member is arranged in the hollow cavity. The rotating shaft of the rotating drive member passes through the front end surface of the mounting bracket and is connected to the rotating disk to realize the rotational movement driving of the rotating disk.

7. The rotary sliding disc pressure electronic scanning valve according to claim 1, Features: A reducing joint is also provided between the mounting bracket and the rotating disk, and a sixth group of channels is provided on the reducing joint, which is connected to the first group of channels and the fourth group of channels in a one-to-one correspondence, and the sixth group of channels is gradually distributed in a concentrated trend from the front end face to the rear end face of the reducing joint.

8. The rotary sliding disc pressure electronic scanning valve according to claim 1, Features: The inner surface of the front end cover is provided with a plurality of limiting columns, the surface of the rotating disk is provided with waist-shaped holes corresponding to the limiting columns one by one, and the ends of the limiting columns are inserted into the waist-shaped holes to limit the rotation angle range of the rotating disk.

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