CN113108981A

CN113108981A - Pressure measuring device for porous probe

Info

Publication number: CN113108981A
Application number: CN202110357210.6A
Authority: CN
Inventors: 沈必亮
Original assignee: Anhui Chunhui Instrument Cable Group Co Ltd
Current assignee: Anhui Chunhui Instrument Cable Group Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-07-13
Anticipated expiration: 2041-04-01
Also published as: CN113108981B

Abstract

The invention relates to the technical field of porous probes and discloses a pressure measuring device for a porous probe, which comprises a porous probe and a pressure measuring cavity, wherein a main pressure hole is formed in the left side of the porous probe, a plurality of symmetrically-arranged pressure measuring holes are formed in the outer side wall of the porous probe, the porous probe is embedded in the pressure measuring cavity, fastening bolts are in threaded connection with two sides of the outer surface of the pressure measuring cavity, one ends, close to the two fastening bolts, of the two fastening bolts penetrate through the side wall of the pressure measuring cavity and are in contact with the outer side wall of the porous probe, a sleeve plate is fixedly sleeved at the right end of the outer side wall of the porous probe, a supporting rod is fixedly arranged at the bottom of the sleeve plate, a supporting plate is fixedly arranged at the bottom of the. This a pressure measurement device for porous probe can connect a plurality of pressure taps through an trachea, can carry out solitary pressure measurement to each pressure tap respectively simultaneously.

Description

Pressure measuring device for porous probe

Technical Field

The invention relates to the technical field of porous probes, in particular to a pressure measuring device for a porous probe.

Background

The porous probe is a device used for measuring the direction of airflow at a certain point in a flow field in fluid mechanics, works based on a pressure sensing principle, and is widely used for the gas pressure measurement in various existing industries.

The patent number CN106768605B discloses a pressure measuring device of porous probe, and the device includes handle, the pressure delivery port of side opening, nut, screw, go up the location mount, lower location mount, urceolus, the pressure delivery port of total pressure. The pressure measuring device of the porous probe is suitable for pressure transmission of the porous probe of an aviation atmospheric data system during ground test, has the characteristics of light weight, small volume, convenient and reliable use and good sealing performance, can effectively utilize the appearance characteristics of the probe to position, and simultaneously transmits different pressures to different pressure holes, but has certain defects when in use:

every pressure measuring hole of the inside porous probe of the device is communicated with an air pipe, so that when a plurality of pressure measuring holes are respectively subjected to pressure measurement, the air pipe and air supply equipment need to be connected for many times, the operation is complex, and the efficiency of pressure measurement is reduced.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a pressure measuring device for a multi-hole probe, which has the advantages that the pressure measuring holes of the multi-hole probe can be connected with external air supply equipment through an air pipe, and the pressure measuring holes can be subjected to independent pressure measuring work when being subjected to pressure measuring work, so that the problem that each pressure measuring hole of the multi-hole probe is communicated with the air pipe, and the air pipe is required to be connected with the air supply equipment for multiple times when the pressure measuring holes are subjected to pressure measuring respectively, which is more complicated, is solved.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a pressure measuring device for a porous probe comprises the porous probe and a pressure measuring cavity, wherein a main pressure hole is formed in the left side of the porous probe, a plurality of pressure measuring holes which are symmetrically arranged are formed in the outer side wall of the porous probe, the porous probe is embedded in the pressure measuring cavity, fastening bolts are in threaded connection with the two sides of the outer surface of the pressure measuring cavity, the two fastening bolts are close to one end and penetrate through the side wall of the pressure measuring cavity and are in contact with the outer side wall of the porous probe, a sleeve plate is fixedly sleeved at the right end of the outer side wall of the porous probe, a supporting rod is fixedly arranged at the bottom of the sleeve plate, a supporting plate is fixedly arranged at the bottom of the supporting rod, pressure measuring tubes are fixedly sleeved at the upper end and the lower end of the left side of the pressure measuring cavity, the end parts of the two pressure measuring tubes are communicated with and are positioned in the pressure measuring cavity, the left side of pressure-measuring chamber is fixed to have cup jointed the second air cock, the right-hand member of second air cock is located the inside in pressure-measuring chamber, and sets up with the internal surface contact in main pressure hole, the left end of second air cock passes the pressure-measuring chamber and extends to the outside, and the intercommunication is equipped with main pressure pipe, two the common intercommunication in other end left side of pressure-measuring pipe is equipped with the intake pipe, two the pressure-measuring pipe is close to the inside equal contact of one end and is provided with the rubber sealing plug, two the equal fixedly connected with in right side of rubber sealing plug's spacing post, the cavity has been seted up to the inside right-hand member of spacing post, the inside of cavity is equipped with spacing grafting mechanism, the equal contact in both sides of main pressure pipe is provided with the diaphragm, two diaphragm and two.

Preferably, the left side both ends in pressure-measuring chamber are all fixed and are equipped with the connecting rod, two the common fixedly connected with riser in left end of connecting rod, riser and two the fixed cup jointing of pressure-measuring pipe and main pressure pipe, spacing spout, two have all been seted up at the left side both ends of riser the slot that two symmetries set up, two are all seted up on the internal surface right side of spacing spout the diaphragm all with the left side fixed connection of riser.

Preferably, press down springback mechanism and include first spring and first telescopic link, the both ends of first telescopic link respectively with spacing post and diaphragm fixed connection, first spring cup joints with first telescopic link, and both ends respectively with spacing post and diaphragm fixed connection.

Preferably, spacing grafting mechanism includes slide, second telescopic link and second spring and inserted block, the slide is connected with the internal surface contact of cavity, the inserted block slides with the right side of slide and cup joints, and the right-hand member passes the cavity and sets up with the cell wall contact of slot, the second telescopic link is located inside and both ends of cavity respectively with slide and cavity fixed connection, the second spring cup joints with the second telescopic link, and both ends respectively with slide and cavity fixed connection.

Preferably, two one side of keeping away from mutually of cavity all has been seted up the bar and has been led to the groove, two one end is kept away from mutually to the slide is all fixed and is equipped with the arm-tie, the other end of arm-tie passes the bar and leads to the groove and extend to the outside.

Preferably, the support plate is in threaded connection with an external device through a plurality of symmetrically arranged positioning bolts.

Preferably, the right side of the pressure measuring cavity is fixedly connected with a sealing ring, and the inner surface of the sealing ring is in close contact with the outer surface of the porous probe.

(III) advantageous effects

Compared with the prior art, the invention provides a pressure measuring device for a porous probe, which has the following beneficial effects:

1. this a pressure measurement device for porous probe through first air cock, pressure-measuring pipe and the intake pipe that is equipped with, when can carrying out pressure measurement to a plurality of pressure taps, only communicates with outside air supply equipment through a trachea, has reduced the time that consumes among the trachea connection process.

2. This a pressure measurement device for porous probe through the press resilience mechanism, rubber sealing plug, spacing post, spacing grafting mechanism, connecting rod, riser and the diaphragm of being equipped with, can carry out solitary pressure measurement work to every pressure measurement hole respectively, has improved porous probe's pressure measurement efficiency.

Drawings

FIG. 1 is a schematic structural view of a pressure measuring device for a multi-hole probe according to the present invention;

FIG. 2 is a schematic structural view of the multi-hole probe of FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

fig. 4 is an enlarged view of a portion B of fig. 1.

In the figure: 1 porous probe, 2 pressure-measuring cavities, 3 main pressure holes, 4 pressure holes, 5 fastening bolts, 6 sleeve plates, 7 supporting rods, 8 supporting plates, 9 pressure-measuring pipes, 10 first air nozzles, 11 second air nozzles, 12 main pressure pipes, 13 air inlet pipes, 14 rubber sealing plugs, 15 limiting columns, 16 transverse plates, 17 connecting rods, 18 vertical plates, 19 limiting sliding grooves, 20 inserting grooves, 21 first springs, 22 first telescopic rods, 23 sliding plates, 24 second telescopic rods, 25 second springs, 26 inserting blocks and 27 pulling plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a pressure measuring device for a porous probe comprises a porous probe 1 and a pressure measuring cavity 2, wherein a main pressure hole 3 is formed on the left side of the porous probe 1, a plurality of pressure measuring holes 4 are symmetrically formed on the outer side wall of the porous probe 1, the porous probe 1 is embedded in the pressure measuring cavity 2, fastening bolts 5 are respectively and threadedly connected to both sides of the outer surface of the pressure measuring cavity 2, so that the porous probe 1 is in close contact with the inner wall of the pressure measuring cavity 2, two fastening bolts 5 penetrate through the side wall of the pressure measuring cavity 2 and are in contact with the outer side wall of the porous probe 1 near one end, a sleeve plate 6 is fixedly sleeved at the right end of the outer side wall of the porous probe 1, a support rod 7 is fixedly arranged at the bottom of the sleeve plate 6, a support plate 8 is fixedly arranged at the bottom of the support rod 7, pressure measuring tubes 9 are respectively and fixedly sleeved at the upper and lower ends of the left side of the pressure measuring cavity, the first air nozzle 10 passes through the pressure measuring hole 4 and extends to the inside of the porous probe 1, the left side of the pressure measuring cavity 2 is fixedly sleeved with the second air nozzle 11, the right end of the second air nozzle 11 is positioned inside the pressure measuring cavity 2, and is arranged in contact with the inner surface of the main pressure hole 3, the left end of the second air nozzle 11 passes through the pressure measuring cavity 2 and extends to the outside, and is communicated with a main pressure pipe 12, let in gas inside porous probe 1 through first air cock 10 and second air cock 11, the other end left side of two pressure-measuring pipes 9 communicates jointly and is equipped with intake pipe 13, two pressure-measuring pipes 9 are close to the inside equal contact of one end mutually and are provided with rubber sealing plug 14, the equal fixedly connected with in right side of two rubber sealing plug 14 spacing post 15, the cavity has been seted up to spacing post 15's inside right-hand member, the inside of cavity is equipped with spacing grafting mechanism, the equal contact in both sides of main pressure pipe 12 is provided with diaphragm 16, all connect the setting through pressing rebound mechanism between two diaphragm 16 and two spacing posts 15.

The connecting rod 17 is all fixed to be equipped with at the left side both ends in pressure-measuring chamber 2, the common fixedly connected with riser 18 in the left end of two connecting rods 17, riser 18 and two pressure-measuring pipes 9 and main pressure pipe 12 are fixed to be cup jointed, spacing spout 19 has all been seted up at the left side both ends of riser 18, the slot 20 that two symmetries set up is all seted up on the internal surface right side of two spacing spout 19, two diaphragm 16 all with the left side fixed connection of riser 18, carry out the fixed stay to pressure-measuring pipe 9 and main pressure pipe 12 through riser 18.

Press resilient mechanism and include first spring 21 and first telescopic link 22, the both ends of first telescopic link 22 respectively with spacing post 15 and diaphragm 16 fixed connection, first spring 21 cup joints with first telescopic link 22, and both ends respectively with spacing post 15 and diaphragm 16 fixed connection, through the setting of first spring 21, be convenient for spacing post 15 pressurized to reply to initial position.

Spacing grafting mechanism includes slide 23, second telescopic link 24 and second spring 25 and inserted block 26, slide 23 is connected with the internal surface contact of cavity, inserted block 26 slides with slide 23's right side and cup joints, and the right-hand member passes the cavity and sets up with the cell wall contact of slot, second telescopic link 24 is located inside and both ends of cavity respectively with slide 23 and cavity fixed connection, second spring 25 cup joints with second telescopic link 24, and both ends respectively with slide 23 and cavity fixed connection, through the grafting of inserted block 26 with the slot, carry out spacing definite to the position of spacing post 15.

Two cavities keep away from one side mutually and have all seted up the bar and led to the groove, and two slides 23 keep away from one end mutually and all fixedly be equipped with arm-tie 27, and the other end of arm-tie 27 passes the bar and leads to the groove and extend to the outside, is convenient for remove the inserted block 26 through arm-tie 27 and carry out swift grafting or separation with the slot.

The supporting plate 8 is in threaded connection with the outside through a plurality of symmetrically arranged positioning bolts, so that the stability of the porous probe 1 during pressure measurement is ensured.

The right side fixedly connected with sealing washer of pressure measuring chamber 2, the internal surface of sealing washer and the surface in close contact with setting of porous probe 1 guarantee the leakproofness in the pressure measuring chamber 2.

In conclusion, when the pressure measuring device for the multi-hole probe is used, the plurality of pressure measuring tubes 9 are communicated through the air inlet pipe 13, and the pressure measuring holes 4 of the multi-hole probe 1 can be subjected to pressure measuring work only by connecting the air inlet pipe 13 with external air supply equipment, so that the time consumed by inserting and pulling the air pipe is reduced, when the pressure measuring holes 4 are required to be subjected to independent pressure measuring work, the supporting plate 8 is fixed through the positioning bolts, the multi-hole probe 1 is positioned and fixed, then the pulling plate 27 is pulled, the sliding plate 27 drives the sliding plate 23 and the inserting block 26 to be away from the inserting slot while sliding in the strip-shaped through slot, the second telescopic rod 24 and the second spring 25 are extruded, when the inserting block 26 moves to the inside of the cavity, the limiting column 15 is pressed, the first spring 21 and the first telescopic rod 22 are compressed, the rubber sealing plug 14 is moved downwards, so that the connecting part of the air inlet pipe 13 and the pressure measuring tubes 9, make in gaseous pressure-measuring pipe 9 that can flow in, spacing post 15 removes to a fixed position along spacing spout 19 when, loosen arm-tie 27, the elasticity through second spring 25 is replied, make inserted block 26 peg graft with another slot 20, confirm spacing post 15's position, thereby it is gaseous through intake pipe 13, pressure-measuring pipe 9 and first nozzle 11 flow in to porous probe 1 in, can carry out the isolated determination to pressure-measuring hole 4, when needs are surveyed simultaneously to a plurality of pressure-measuring holes 4, it is spacing to remove simultaneously a plurality of rubber sealing plugs 14, make gaseous can flow can to a plurality of pressure-measuring pipes 9 in can.

It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pressure measurement device for a multi-hole probe comprises the multi-hole probe (1) and a pressure measurement cavity (2), and is characterized in that: the left side of the porous probe (1) is provided with a main pressure hole (3), the outer side wall of the porous probe (1) is provided with a plurality of pressure measuring holes (4) which are symmetrically arranged, the porous probe (1) is embedded in the pressure measuring cavity (2), two fastening bolts (5) are in threaded connection with the two sides of the outer surface of the pressure measuring cavity (2), the two fastening bolts (5) are close to one end and penetrate through the side wall of the pressure measuring cavity (2) and are in contact with the outer side wall of the porous probe (1), the right end of the outer side wall of the porous probe (1) is fixedly sleeved with a sleeve plate (6), the bottom of the sleeve plate (6) is fixedly provided with a support rod (7), the bottom of the support rod (7) is fixedly provided with a support plate (8), the upper end and the lower end of the left side of the pressure measuring cavity (2) are fixedly sleeved with pressure measuring tubes (9), the end parts of the two pressure measuring tubes (9) are communicated with a, the first air tap (10) penetrates through the pressure measuring hole (4) and extends to the interior of the porous probe (1), the left side of the pressure measuring cavity (2) is fixedly sleeved with the second air tap (11), the right end of the second air tap (11) is located in the pressure measuring cavity (2) and is arranged in contact with the inner surface of the main pressure hole (3), the left end of the second air tap (11) penetrates through the pressure measuring cavity (2) and extends to the outside and is communicated with the main pressure pipe (12), the left sides of the other ends of the two pressure measuring pipes (9) are communicated with an air inlet pipe (13) together, the two pressure measuring pipes (9) are close to the inner part of one end and are provided with rubber sealing plugs (14) in contact, the right sides of the two rubber plugs (14) are fixedly connected with limit columns (15), the right ends of the inner parts of the limit columns (15) are provided with cavities, and the inner parts of the cavities, both sides of the main pressure pipe (12) are provided with transverse plates (16) in a contact manner, and the transverse plates (16) are connected with the two limiting columns (15) through pressing rebounding mechanisms.

2. The pressure measuring device for a multi-hole probe according to claim 1, wherein: the left side both ends in pressure-measuring chamber (2) are all fixed and are equipped with connecting rod (17), two the common fixedly connected with riser (18) of left end of connecting rod (17), riser (18) and two pressure-measuring pipe (9) and main pressure pipe (12) are fixed to be cup jointed, spacing spout (19), two have all been seted up at the left side both ends of riser (18 slot (20), two that the symmetry set up are all seted up on the internal surface right side of spacing spout (19) diaphragm (16) all with the left side fixed connection of riser (18).

3. The pressure measuring device for a multi-hole probe according to claim 1, wherein: press down resilience mechanism and include first spring (21) and first telescopic link (22), the both ends of first telescopic link (22) respectively with spacing post (15) and diaphragm (16) fixed connection, first spring (21) cup joint with first telescopic link (22), and both ends respectively with spacing post (15) and diaphragm (16) fixed connection.

4. The pressure measuring device for a multi-hole probe according to claim 1, wherein: spacing grafting mechanism includes slide (23), second telescopic link (24) and second spring (25) and inserted block (26), slide (23) are connected with the internal surface contact of cavity, inserted block (26) slide with the right side of slide (23) and cup joint, and the right-hand member pass the cavity and set up with the cell wall contact of slot, second telescopic link (24) are located inside and both ends of cavity respectively with slide (23) and cavity fixed connection, second spring (25) cup joint with second telescopic link (24), and both ends respectively with slide (23) and cavity fixed connection.

5. The pressure measuring device for a multi-hole probe according to claim 4, wherein: two one side is kept away from mutually to the cavity all has seted up the bar and has led to the groove, two slide (23) are kept away from one end mutually and are all fixed arm-tie (27) are equipped with, the other end of arm-tie (27) passes the bar and leads to the groove and extend to the outside.

6. The pressure measuring device for a multi-hole probe according to claim 1, wherein: the supporting plate (8) is in threaded connection with the outside through a plurality of symmetrically arranged positioning bolts.

7. The pressure measuring device for a multi-hole probe according to claim 1, wherein: the right side of the pressure measuring cavity (2) is fixedly connected with a sealing ring, and the inner surface of the sealing ring is in close contact with the outer surface of the porous probe (1).