Novel disc type runner static pressure and total temperature and total pressure composite measuring device

Abstract

The invention discloses a novel disc type flow channel static pressure and total temperature and total pressure composite measuring device. The device comprises a supporting rod, wherein a through hole channel is formed in the supporting rod. The static pressure rod is fixedly communicated with the axial end part of the supporting rod, a double-hole porcelain tube is arranged on the side edge of the end part of the supporting rod close to the static pressure rod, a thermocouple wire is arranged on the double-hole porcelain tube, a pressure measuring tube is arranged on the supporting rod at the thermocouple wire, and the thermocouple wire and the pressure measuring tube are used for forming measuring points for measuring the total temperature and the total pressure. And the static pressure rod is used for forming a measuring point for measuring static pressure. The static pressure rod is arranged at the axial end of the supporting rod, and the thermocouple wire and the pressure measuring tube are arranged on the side edge of the end part of the supporting rod through the double-hole porcelain tube, so that the supporting rod and the static pressure rod area between the mounting seat and the static pressure rod have no longer L-shaped bend, and the problem that the L-shaped bend of the static pressure tube has longer length and is positioned in a flow channel to directly face the airflow direction is solved; and potential safety hazards exist when airflow flows.

Description

Technical Field

[0001] The invention relates to a novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device, belonging to the technical field of aeroengine measurement. Background Art

[0002] Flow field measurement has always been an important part of aero-engine measurement. Understanding the flow field distribution of the engine flow path is crucial in the engine development process. Flow field measurement is the measurement of total temperature, total pressure and flow path static pressure. The measurement of total temperature and total pressure is relatively easy, while the measurement of flow path static pressure is relatively complex.

[0003] In the traditional flow channel static pressure measurement, the L-bend static pressure tube is placed in the flow channel with a single cantilever (see Chinese patent announcement number CN107270982B). The L-bend of the static pressure tube has a long length in the flow channel to face the airflow direction, which will cause axial vibration when the airflow flows, resulting in certain safety hazards to the static pressure tube. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device, comprising:

[0007] A support rod with a through hole channel inside.

[0008] It also includes a static pressure rod with a through hole channel inside, the axial end of the support rod is fixedly connected to the static pressure rod, a double-hole porcelain tube is installed on the side of the support rod end close to the static pressure rod, a galvanic wire is installed on the double-hole porcelain tube, and a pressure measuring tube is installed on the support rod; the galvanic wire and the pressure measuring tube are used to form a measuring point for measuring total temperature and total pressure, and the static pressure rod is used to form a measuring point for measuring static pressure.

[0009] The joint between the static pressure rod and the support rod is sealed with sealing material, and the double-hole porcelain tube is sealed and installed through the sealing material.

[0010] The support rod is slidably covered with a mounting seat; an elastic chuck capable of elastic deformation is installed in the mounting seat through a gasket, and a clamping nut is screwed on the elastic chuck away from the mounting seat. The elastic chuck and the clamping nut can be slidably covered on the outside of the support rod.

[0011] The gasket consists of two pieces, and asbestos rope is added between the two gaskets.

[0012] A stainless steel pipe is installed inside the support rod and is connected to the static pressure rod in a sealed manner. The joint between the stainless steel pipe and the static pressure rod is sealed with sealing material.

[0013] The end of the support rod away from the static pressure rod is sealed and fixedly connected to a nozzle seat, the side interface of the nozzle seat is sealed and fixedly connected to a sleeve rod in an inclined state, and the sleeve rod is sealed and fixedly connected to an output nozzle; the pressure measuring tube is laid to the output nozzle through the internal through hole of the support rod.

[0014] The axial interface of the nozzle seat is fixedly connected with a single-hole porcelain tube; the nozzle seat is fixed with an adapter seat, the adapter seat is fixedly connected with an aviation plug mounting seat, the single-hole porcelain tube is located inside the aviation plug mounting seat and the adapter seat, the aviation plug mounting seat is fixedly connected with a four-core plug socket, and the electric wire of the electric couple is laid through the nozzle seat, the single-hole porcelain tube and is electrically connected to the electrical end of the four-core plug socket.

[0015] The beneficial effect of the present invention is that: since the static pressure rod is installed at the axial end of the support rod, the electric couple wire and the pressure measuring tube are installed on the side of the support rod end through the double-hole porcelain tube, so that there is no long L-bend in the support rod and the static pressure rod area between the mounting seat and the static pressure rod, which solves the problem that the L-bend of the static pressure tube has a long length in the flow channel to face the airflow direction, which poses a safety hazard when the airflow flows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional schematic diagram of the present invention;

[0017] In the figure: 1- four-core plug socket; 2- semicircular head screw; 3- nut; 4- aviation plug mounting seat; 5- adapter seat; 6- nozzle seat; 7- support rod; 8- tightening nut; 9- elastic chuck; 10- gasket; 11- mounting seat; 12- stainless steel tube; 13- double-hole porcelain tube; 14- electric couple wire; 15- sealing material; 16- pressure measuring tube; 17- static pressure rod. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0019] like Figure 1 shown.

[0020] The present application discloses a novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device, comprising:

[0021] A support rod 7 with a static pressure rod 17 fixedly installed at the axial end is welded, and a through hole is provided on the side of the end of the support rod 7 close to the static pressure rod 17 for installing a double-hole porcelain tube 13, on which a galvanic wire 14 is installed, and a pressure measuring tube 16 is installed on the support rod 7; the galvanic wire 14 and the pressure measuring tube 16 are vertically distributed with the static pressure rod 17, and the galvanic wire 14 and the pressure measuring tube 16 are used to form total temperature and total pressure measuring points, and the static pressure rod 17 is used to measure static pressure.

[0022] Since the static pressure rod 17 is installed at the axial end of the support rod 7, the electric couple wire 14 and the pressure measuring tube 16 are installed on the side of the end of the support rod 7 through the double-hole porcelain tube 13, so that there is no long L-bend in the support rod 7 and the static pressure rod 17 area between the mounting seat 11 and the static pressure rod 17, which solves the problem that the L-bend of the static pressure tube has a long length in the flow channel to face the airflow direction, posing a safety hazard when the airflow flows.

[0023] The joint between the static pressure rod 17 and the support rod 7 is sealed with a sealing material 15 , and the double-hole porcelain tube 13 is sealed and installed through the sealing material 15 .

[0024] The support rod 7 is slidably covered with a mounting seat 11, which is used to contact and resist the engine or the flow channel housing; the mounting seat 11 is provided with an elastic chuck 9 that can be elastically deformed through a gasket 10, and the elastic chuck 9 away from the mounting seat 11 is screwed with a clamping nut 8, and the elastic chuck 9 and the clamping nut 8 can be slidably covered on the outside of the support rod 7. The gasket 10 is composed of two pieces, and an asbestos rope is added between the two gaskets 10 to prevent air leakage from affecting the measurement.

[0025] When the clamping nut 8 is screwed into the elastic collet 9, the elastic collet 9 elastically shrinks and clamps the outside of the support rod 7. At this time, the clamping nut 8 and the elastic collet 9 can no longer slide outside the support rod 7. At this time, one side of the axial end of the mounting seat 11 is supported by the immovable elastic collet 9, and the other side of the mounting seat 11 contacts the engine or flow channel housing. The mounting seat 11 and the support rod 7 can no longer slide, and the total length of the support rod 7 and the static pressure rod 17 is at a certain distance and extends into the engine or flow channel.

[0026] When the clamping nut 8 is screwed out on the elastic clamp 9, the elastic clamp 9 elastically expands outward and no longer clamps the outside of the support rod 7. At this time, the clamping nut 8 and the elastic clamp 9 can slide outside the support rod 7, and the mounting seat 11 and the support rod 7 can slide. At this time, the total length of the support rod 7 and the static pressure rod 17 can be adjusted.

[0027] The support rod 7 and the static pressure rod 17 have through holes inside; the pressure measuring tube 16 is laid on the output nozzle 20 through the through hole inside the support rod 7. A stainless steel pipe 12 is installed inside the support rod 7 to be connected with the static pressure rod 17 in a sealed manner, and a sealing material 15 is used to seal the connection between the stainless steel pipe 12 and the static pressure rod 17.

[0028] The end of the support rod 7 away from the static pressure rod 17 is sealed and welded to be fixedly connected with the nozzle seat 6, and the side interface of the nozzle seat 6 is sealed and welded to be fixedly connected with a sleeve rod 21 in an inclined state. There are two sleeve rods 21 symmetrically distributed, and the sleeve rods 21 are sealed and welded to be fixedly connected with an output nozzle 20.

[0029] The axial interface of the nozzle seat 6 is fixedly connected with a single-hole porcelain tube 18; the nozzle seat 6 is fixed with an adapter seat 5, and the adapter seat 5 is fixedly connected with an aviation plug mounting seat 4. The single-hole porcelain tube 18 is located inside the aviation plug mounting seat 4 and the adapter seat 5. The aviation plug mounting seat 4 is fixedly connected with a four-core plug seat 1 through a semicircular head screw 2 and a nut 3. The electrical conductor of the electric couple wire 14 is laid through the nozzle seat 6, the single-hole porcelain tube 18 and the electrical end of the four-core plug seat 1. The external temperature measuring equipment is connected to the four-core plug seat 1 to perform a total temperature data test.

Claims

1. A new type of disc-type flow channel static pressure and total temperature and total pressure composite measuring device, characterized in that: include: A support rod (7) is provided with a through hole channel inside.

2. The novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device as claimed in claim 1 is characterized in that: It also includes a static pressure rod (17) with a through hole channel inside, the axial end of the support rod (7) is fixedly connected to the static pressure rod (17), a double-hole porcelain tube (13) is installed on the side of the end of the support rod (7) close to the static pressure rod (17), a galvanic wire (14) is installed on the double-hole porcelain tube (13), and a pressure measuring tube (16) is installed on the support rod (7); the galvanic wire (14) and the pressure measuring tube (16) are used to form a measuring point for measuring total temperature and total pressure, and the static pressure rod (17) is used to form a measuring point for measuring static pressure.

3. The novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device as claimed in claim 2 is characterized in that: The joint between the static pressure rod (17) and the support rod (7) is sealed with a sealing material (15), and the double-hole porcelain tube (13) is sealed and installed through the sealing material (15).

4. The novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device as claimed in claim 2 is characterized in that: The support rod (7) is slidably covered with a mounting seat (11); an elastic chuck (9) capable of elastic deformation is installed in the mounting seat (11) via a gasket (10); a clamping nut (3) is screwed on the elastic chuck (9) away from the mounting seat (11); the elastic chuck (9) and the clamping nut (3) are slidably covered on the outside of the support rod (7).

5. The novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device as claimed in claim 4 is characterized in that: The gasket (10) consists of two pieces, and an asbestos rope is added between the two gaskets (10).

6. The novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device as claimed in claim 2 is characterized in that: A stainless steel pipe (12) is installed inside the support rod (7) and is connected to the static pressure rod (17) in a sealed manner. The joint between the stainless steel pipe (12) and the static pressure rod (17) is sealed with a sealing material (15).

7. The novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device as claimed in claim 2 is characterized by: The end of the support rod (7) away from the static pressure rod (17) is sealed and fixedly connected to a nozzle seat (5), the side interface of the nozzle seat (5) is sealed and fixedly connected to a sleeve rod (1) in an inclined state, and the sleeve rod (1) is sealed and fixedly connected to an output nozzle (1); the pressure measuring tube (16) is laid to the output nozzle (1) through the internal through hole of the support rod (7).

8. The novel disc-type flow channel static pressure and total temperature and total pressure composite measuring device as claimed in claim 7 is characterized in that: The axial interface of the nozzle seat (5) is fixedly connected to a single-hole porcelain tube (1); the nozzle seat (5) is fixedly connected to an adapter seat (1), the adapter seat (1) is fixedly connected to an aviation plug mounting seat (4), the single-hole porcelain tube (1) is located inside the aviation plug mounting seat (4) and the adapter seat (1), the aviation plug mounting seat (4) is fixedly connected to a four-core plug seat (1), and the electrical conductor of the electric couple wire (14) is laid through the nozzle seat (5), the single-hole porcelain tube (1) and the electrical end of the four-core plug seat (1) is electrically connected.

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