CN210533586U

CN210533586U - Detachable probe pressure-leading structure

Info

Publication number: CN210533586U
Application number: CN201920690736.4U
Authority: CN
Inventors: 张爱武; 丁健; 田羽; 马磊; 赵展
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-05-15
Anticipated expiration: 2029-05-14

Abstract

The application relates to a detachable probe draws pressure structure, detachable probe draws pressure structure includes: a guide tube for connecting with the probe sensing part; the connector base is used for being connected with the test connector; the plug is provided with a cavity and a plurality of plug channels penetrating through the plug and communicated with the cavity, pressure guiding pipes guiding from the guide pipes are arranged in the plug channels, and the plug is fixedly connected with the guide pipes; the jack seat is provided with an outer contour smaller than the accommodating cavity and a plurality of socket channels matched with the pressure guiding pipes, the jack seat is fixedly connected with the connector seat, and when the jack seat is inserted into a plug, the pressure guiding pipes are inserted into the socket channels; and the pressing cap is sleeved outside the plug and the jack seat and used for fixing the jack seat and the plug when the jack seat is inserted into the plug. This application can pass the probe at the split state and make up again after the aversion mechanism mounting hole, and the probe installation is simple, convenient, and maintains, changes when the probe part of being convenient for damages, and the probe that measuring quantity is the same possesses interchangeability, can realize quick replacement.

Description

Detachable probe pressure-leading structure

Technical Field

This application belongs to probe technical field, in particular to detachable probe draws pressure structure.

Background

In the performance test of aeroengine parts and the cascade test, the movable probe is an important test tool, and the function of the movable probe is to drive the movable probe to move by a displacement mechanism and measure pressure values at different positions so as to acquire detailed flow field data. When the probe is used, the probe needs to pass through the mounting hole of the displacement mechanism from the pressure guiding end, so that the probe needs to be ensured not to be influenced when the pressure guiding structure is designed. The pressure guiding structure of the current mobile probe and the probe rod mainly adopt an integrated structure, so that the size of the pressure guiding end is limited, and the maximum size of a pressure guiding hole is not larger than the mounting hole of a displacement mechanism.

As shown in fig. 1, which is an integrated pressure guiding structure and probe rod in the prior art, one end of a pressure guiding pipe 13 made of a stainless steel pipe passes through a guide pipe 11 to be connected with a measuring point, the tail end of the guide pipe 11 is welded and blocked by a blocking cover 12, and the other end of the pressure guiding pipe 13 is welded with a pressure guiding nozzle 4. Before the probe is used, the pressure measuring pipe 13 is adjusted to be the same as the axial direction of the guide pipe 11, the pressure guiding pipe 13 and the pressure guiding joint 14 penetrate through the displacement mechanism mounting hole, and the pressure guiding joint 14 is connected with a testing device through a rubber pipe.

However, in the above structure, the pressure pipe 13 needs to be bent repeatedly during use, the root is easily damaged, and the maintenance is difficult, and then after multiple uses, the deformation of the pressure pipe 13 is large, and the pressure pipe is difficult to pass through the displacement mechanism mounting hole, and the unnumbered pressure pipes 13 are difficult to identify.

Disclosure of Invention

It is an object of the present application to provide a detachable probe drawing structure for solving or alleviating at least one of the problems of the prior art.

The application provides a detachable probe draws pressure structure, detachable probe draws pressure structure includes: a guide tube for connecting with the probe sensing part; the connector base is used for being connected with the test connector; the plug is provided with a cavity and a plurality of plug channels which penetrate through the plug and are communicated with the cavity, pressure guiding pipes which are guided from the guide pipes are arranged in the plug channels, and the plug is fixedly connected with the guide pipes; the jack seat is provided with an outer contour smaller than the accommodating cavity and a plurality of jack channels matched with the pressure guiding pipe, the jack seat is fixedly connected with the connector base, and when the jack seat is inserted into the plug, the pressure guiding pipe is inserted into the jack channels; and the pressing cap is sleeved outside the plug and the jack seat and used for fixing the jack seat and the plug when the jack seat is inserted into the plug.

In one embodiment of the present application, the outer surface of the plug has at least one flat surface for bearing a torque force for rotating or fixing the plug.

In an embodiment of the present application, the plug has a sealing gasket in the cavity, the sealing gasket is provided with a plurality of through holes matched with the pressure guiding pipe.

In one embodiment of the present application, the diameter of the passage hole in the gasket is smaller than the diameter of the pressure introduction pipe, so that the gasket and the pressure introduction pipe have a reinforced seal portion larger than the thickness of the gasket.

In an embodiment of the present application, the plug defines that the inner side of the wall surface of the cavity has a protrusion extending along an axis, and the receptacle has a groove cooperating with the protrusion, and the protrusion cooperates with the groove for guiding the receptacle to be inserted into the plug.

In an embodiment of the present application, the socket has a circumferential protrusion for limiting axial movement of the pressing cap, one end of the pressing cap has an inner protrusion matched with the circumferential protrusion, and the other end of the pressing cap has an inner thread matched with an outer thread provided on the plug.

In one embodiment of the present application, the end surface of the tip seat has a mark for distinguishing between probes in a plurality of the socket passages.

The detachable probe pressure-leading structure can enable the probe to pass through the displacement mechanism mounting hole and then be combined in a split state, and the probe is simple and convenient to mount; the probe sensing part and the nozzle part adopt a split structure, so that the probe part can be maintained and replaced when damaged, and the probes with the same measuring quantity have interchangeability and can be replaced quickly; the plug and the jack seat are sealed through a sealing gasket and are compressed through a pressing cap, so that the sealing property is good, and the accuracy and reliability of the measured data are ensured; the positioning and mistake-proofing design is arranged between the plug and the jack seat, so that the convenience and accuracy in probe installation are ensured; the testing points can be numbered at the obvious positions on the nozzle base, so that the connection of the pipeline is convenient to test.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.

Fig. 1 is a schematic view of an integrated probe pressure-leading structure in the prior art.

Fig. 2 is a schematic view of a pressure-guiding structure of a five-hole "L" -shaped detachable probe according to an embodiment of the present application.

Fig. 3 is an enlarged view of the plug and receptacle of the present application.

Fig. 4 is a schematic view based on section a-a in fig. 3.

FIG. 5 is a schematic view based on section B-B in FIG. 3.

FIG. 6 is a schematic view based on section C-C in FIG. 3.

Fig. 7 is a schematic diagram based on the direction P in fig. 3.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

The probe pressure guiding structure aims to solve the problems that the pressure guiding pipe 13 in the probe pressure guiding structure in the prior art is easy to bend and damage, or the pressure guiding pipe 13 is difficult to penetrate through a mounting hole of a displacement mechanism due to large deformation, or the serial numbers of a plurality of pressure guiding pipes 13 are difficult to identify.

As shown in fig. 2 and fig. 3, the present application provides a detachable probe guiding and pressing structure, which includes a guiding tube 21, a nozzle seat 25, a plug 22, a socket 24, and a pressing cap 23. The guide tube 21 is generally L-shaped for connection to the probe receiving portion, and the nozzle holder 25 has a tapered block body on which five nozzles are inserted for connection to the test nozzles. The plug 22 is provided with a containing cavity 221 and a plurality of plug channels which penetrate through the body part of the plug 22 and are communicated with the containing cavity 221, the number of the plug channels is determined according to the number of the probe measuring points, five plug channels are shown in fig. 1, the five plug channels are uniformly distributed in the circumferential direction according to one middle plug channel, pressure leading pipes 26 leading from the guide pipe 21 are arranged in the plug channels, the pressure leading pipes 26 are led out from the plug channels to the end face which is approximately parallel to the plug 22, and the plug 22 and the guide pipe 21 are fixedly connected together through welding. The plug 24 has an outer contour slightly smaller than the cavity 221 and a plurality of socket channels 241 matching with the pressure guiding tubes 26, the diameter of the socket channels 241 is slightly larger than the diameter of the pressure guiding tubes 26 to ensure that the pressure guiding tubes 26 can be smoothly inserted into the socket channels 241 when the plug seat 24 is inserted into the cavity 21 of the plug 22, the number of the socket channels 241 is the same as that of the plug channels, in this embodiment, five socket seats 24 are fixed with the plug seat 25 by welding. Finally, the pressing cap 23 is sleeved outside the plug 22 and the jack 24 and used for fixing the jack 24 and the plug 22 when the jack 24 is inserted into the plug 22.

With continued reference to fig. 3, a seal 27 is disposed within the cavity 221 of the plug 22, and the seal 27 is provided with a plurality of apertures for receiving the pressure tube 26. the pressure tube 26 passes through the seal 27 and moves the seal 27 to the bottom of the cavity 221 for contact with the body portion of the plug 22.

In one embodiment, the diameter of the through hole in the seal 27 is smaller than the diameter of the pressure tube 26 so that when the seal 27 is fitted over the pressure tube 26. The contact portion of the gasket 27 and the pressure introduction pipe 26 forms a reinforcing seal portion 271 having a thickness greater than that of the gasket, thereby improving the sealing property.

In another embodiment, the sealing gasket 27 may also be provided with an annular protrusion around the periphery of the through hole, the annular protrusion being thicker than the sealing gasket and serving to reinforce the same function of the sealing portion 271, i.e. to press the annular protrusion to improve the sealing effect when the receptacle 24 is inserted into the cavity 221.

In the above two embodiments, the reinforced sealing portion 271 or the annular protrusion may cause the end surface of the socket 24 and the sealing pad 27 to be not in tight contact, so that a chamfer is formed at the socket passage of the corresponding socket 24 to accommodate the reinforced sealing portion 271 or the annular protrusion, thereby ensuring complete sealing during pressing and avoiding gas channeling between the pressure pipes 26.

As shown in fig. 4, the outer surface of the plug 22 has two planes 222 symmetrically disposed on both sides of the axis, and the planes 222 are disposed to be able to cooperate with a wrench to bear torque when rotating or fixing the plug 22.

As shown in fig. 5 and 6, the inner side of the wall surface defining the cavity 221 of the plug 22 has a guiding protrusion 223 extending along the axis, the receptacle 24 has a groove 242 matching with the guiding protrusion 223, the groove is located on the outer surface of the receptacle 24 and extends along the axis, the guiding protrusion 223 matching with the groove 242 can guide the receptacle 24 to be inserted into the plug 22, damage to the pressure guiding pipe 7 caused by misalignment in the circumferential direction during insertion can be avoided, and an error-proof function is provided.

Referring to fig. 3, the outer surface of the socket 24 has a circumferential protrusion 243 for restricting the axial movement of the press cap, and the press cap 23 has an inner protrusion 231 at one end for engaging with the circumferential protrusion and an inner thread at the other end for engaging with the outer thread provided on the plug 22. Finally, the pressing cap 23 is connected with the plug 22 through threads, and the plug 22 is fastened with the jack 24.

As shown in fig. 7, the end surface of the tapered body portion of the nozzle holder 25 has a mark, i.e., the number of each nozzle is numbered, so that probes in a plurality of socket channels can be distinguished for identification.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a detachable probe draws pressure structure which characterized in that, detachable probe draws pressure structure includes:

a guide tube (21) for connecting to the probe receiving section;

a nozzle seat (25) for connecting with a test nozzle; and

the plug (22), the plug (22) has a cavity (221) and a plurality of plug channels passing through the plug (22) and communicating with the cavity (221), the plug channels are internally provided with pressure guiding tubes (26) leading from the guide tubes (21), and the plug (22) is fixedly connected with the guide tubes (21);

the jack seat (24) is provided with an outer contour smaller than the containing cavity (221) and a plurality of socket passages (241) matched with the pressure guide pipes (26), the jack seat (24) is fixedly connected with the nozzle seat (25), and when the jack seat (24) is inserted into the plug (22), the pressure guide pipes (26) are inserted into the socket passages (241);

and the pressing cap (23) is sleeved outside the plug (22) and the jack seat (24) and used for fixing the jack seat (24) and the plug (22) when the jack seat (24) is inserted into the plug (22).

2. The detachable probe press-leading structure of claim 1, wherein the outer surface of the plug (22) has at least one flat surface (222) for bearing a torsion force for rotating or fixing the plug (22).

3. The detachable probe pressure guiding structure according to claim 1 or 2, wherein a sealing gasket (27) is arranged in the cavity (221) of the plug (22), and the sealing gasket (27) is provided with a plurality of through holes matched with the pressure guiding pipe (26).

4. The detachable probe pressure leading structure according to claim 3, wherein the diameter of the through hole of the sealing pad (27) is smaller than the diameter of the pressure leading pipe (26), so that the sealing pad (27) and the pressure leading pipe (26) have a reinforced sealing part (271) larger than the thickness of the sealing pad.

5. The detachable probe pin pressure guiding structure according to claim 1 or 2, wherein the inner side of the wall defining the cavity (221) of the plug (22) is provided with a guiding protrusion (223) extending along the axis, the jack seat (24) is provided with a groove (242) matched with the guiding protrusion (223), and the guiding protrusion (223) is matched with the groove (242) for guiding the jack seat (24) to be inserted into the plug (22).

6. The detachable probe leading structure of claim 1, wherein the jack seat (24) is provided with a circumferential protrusion (243) for limiting the axial movement of the pressing cap, one end of the pressing cap (23) is provided with an inner protrusion (231) matched with the circumferential protrusion, and the other end is provided with an inner thread matched with an outer thread arranged on the plug (22).

7. The removable probe press-leading structure of claim 1, wherein the end face of the nozzle holder (25) has a mark for distinguishing the probes in a plurality of the socket channels.