CN111606379B

CN111606379B - Degassing device for fluid machinery test system

Info

Publication number: CN111606379B
Application number: CN202010628326.4A
Authority: CN
Inventors: 陈国玉; 孙军; 谢顺邦
Original assignee: Qinghai Nationalities University
Current assignee: Qinghai Nationalities University
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2022-06-07
Anticipated expiration: 2040-07-02
Also published as: CN111606379A

Abstract

The invention discloses a degassing device for a fluid machinery test system, which mainly comprises an outer frame, a spiral sheet, a middle pipe, an exhaust module, a degassing shell, a rotating shaft, a shaft locking seat and a driving module, wherein the middle pipe penetrates through the middle part of the inner side of the outer frame and is fixedly installed, the spiral sheet is fixedly installed on the outer side of the middle pipe, the upper end and the lower end of the middle pipe are provided with drainage heads in an assembling way, the left ends of the two drainage heads are provided with collecting pipes through tee joints, and the inner walls of the upper end and the lower end of the middle pipe close to the drainage heads are fixedly provided with the shaft locking seat. The invention has reasonable structural design, flexible and stable structure, high automation degree, self-adaptation according to real-time conditions, more thorough gas discharge under the condition of minimum water yield, good water standing effect under the action of the turbulent flow plate, capability of avoiding overflow of water from the exhaust pipe caused by over-adjustment in the adjustment process, reduction of the number of precise drivers, reduction of the failure rate and capability of reducing the manufacturing and later maintenance costs.

Description

Degassing device for fluid machinery test system

Technical Field

The invention relates to a fluid testing system, in particular to a degassing device for a fluid mechanical testing system.

Background

During the transportation of liquids through pipelines, large amounts of gas may be present. The pipeline gas storage increases the running resistance and the energy consumption, and can directly or indirectly cause pipe explosion in serious cases. Meanwhile, the pipeline gas storage can cause pressure instability, and long-term pressure oscillation causes fatigue of a pipeline connector and a pipe, so that the service life of the pipeline is greatly reduced. In conclusion, the gas storage in the pipeline not only brings certain economic loss, but also has potential safety hazard. The cavitation can be induced in the pipeline of the fluid mechanical testing system, strong vibration and noise are formed, mechanical abrasion of the pipeline and a valve is accelerated, meanwhile, vibration causes loosening of fasteners, certain damage is caused to the reliability of the pipeline and the system, the testing effect and the operating environment are seriously affected, the hydraulic pressure experiment distortion of the pipeline is caused, the water head of friction resistance is increased, the pump lift is increased, the water yield is reduced, water is difficult to flow out, even water does not flow out at a terminal, the more serious tearing of weak points can be caused, and safety production is directly threatened.

The existing degassing structure is simple and crude, the condition of different air contents in water cannot be adapted to real-time adjustment, when the air content in water is more, degassing is not thorough, when the air content is less, water flowing out of a pipeline is too much, conveying efficiency is influenced, the degassing automation degree of the device is low, the practicability of equipment is poor, self-adaption can not be carried out according to the real-time condition, the device driving equipment is too much, the size of the device is large, and the manufacturing cost is high.

Disclosure of Invention

The present invention is directed to a degassing device for a fluid machinery testing system, so as to solve the above problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a degassing device for a fluid machinery test system mainly comprises an outer frame, a spiral sheet, a middle pipe, an exhaust module, a degassing shell, a rotating shaft, a shaft locking seat and a driving module, wherein the middle part of the inner side of the outer frame is fixedly provided with the middle pipe in a penetrating way, the spiral sheet is fixedly arranged on the outer side of the middle pipe, the upper end and the lower end of the middle pipe are provided with a diversion head in an assembling way, the left ends of the two diversion heads are provided with a collecting pipe through a tee joint, the inner wall of the upper end and the lower end of the middle pipe, which are close to the diversion head, is fixedly provided with the shaft locking seat, the middle part of the inner side of the middle pipe is provided with the driving module in a pressing way through bolts, the rotating shaft is rotatably arranged between the shaft locking seat and the driving module, the side wall of the middle pipe is provided with a through hole which is overlapped with a spiral, the through hole is positioned at the idle-off position of the spiral sheet, the outer side of the rotating shaft is fixedly provided with a baffle plate matched with the through a hollow support, the right side wall at the upper part of the rear side wall of the outer frame is fixedly provided with a water inlet pipe in a penetrating way, an upper baffle is fixedly arranged between the right side wall at the top end of the spiral piece and the inner wall at the right part of the top end of the outer frame, a water outlet pipe penetrates through the left side of the lower part of the rear side wall of the outer frame and is fixedly arranged, and a lower baffle is fixedly arranged between the side wall at the lower part of the spiral piece and the inner wall at the left lower part of the outer frame;

the lower part of the left side of the outer frame is fixedly provided with a degassing shell, the collecting pipe penetrates through and is fixedly connected with the side wall of the top end of the degassing shell, turbulent flow plates which are arranged in a stacked mode are fixedly arranged on the inner wall of the degassing shell, the left part of the top end of the degassing shell penetrates through and is fixedly provided with an exhaust module, the side wall of the upper part of the left side of the degassing shell is embedded with and is fixedly provided with a water level sensor, the bottom end of the degassing shell penetrates through and is fixedly provided with a drain pipe, and the top end position of the drain pipe and the bottom end position of the water level sensor are positioned on the same horizontal plane;

the driving module mainly comprises a shell 25, a driven wheel 26, an anchor rod 27, a guide rod 28, a permanent magnet slider 29, an electromagnet 30, a swing rod 31, an inserted bar 32, a sliding seat 34, a motor 35, a sliding pin 36 and a bolt seat 39, wherein the left side wall and the right side wall of the shell 25 are fixedly provided with the bolt seat 39, the bolt seat 39 is fixedly connected with the middle side wall of the middle pipe 6 through a bolt, the sliding seat 34 is fixedly arranged on the middle inner wall of the rear side of the shell 25, the inserted bar 32 is slidably arranged in the middle of the sliding seat 34, the driven wheels 26 which are symmetrically arranged are fixedly arranged on the outer side of the inserted bar 32, the motor 35 is fixedly arranged on the left part of the inner side of the shell 25, a motor shaft of the motor 35 is respectively meshed with the driven wheel 26 through an external gear, a tooth key sleeve 33 is fixedly arranged on the end part, which is positioned inside the shell 25, the end part of the inserted bar 32 is provided with a tooth key matched with the inner wall of the tooth key sleeve 33, the inner wall of the right part of the rear side of the shell 25 is fixedly provided with the anchor rod 27, the swing rod 31 is installed in the rotation of stock 27 front end, shell 25 right side inner wall fixed mounting has the electro-magnet 30 that the symmetry set up, two fixed mounting has guide arm 28 between the electro-magnet 30, and the permanent magnetism slider 29 is installed in the sliding connection in the guide arm 28 outside, inserted bar 32 front end and permanent magnetism slider 29 front end fixed mounting have respectively smooth 36, the smooth mouth with smooth 36 complex of selling the end is seted up to the swing rod 31 tip.

As a further scheme of the invention: exhaust module mainly includes trachea, floating block, conical ring, pin and conical head, the inboard lower part fixed mounting of trachea has conical ring, and conical ring middle part grafting installs the conical head, and conical head bottom fixed mounting has the floating block, conical head top fixed mounting has the pin, and the pin is set up at conical ring upper portion lateral wall.

As a still further scheme of the invention: the lock shaft seat mainly comprises an elastic frame, a limiting strip, a base, a spinning sleeve and a crimping block, the base is fixedly connected with the inner wall of the middle pipe at the left end and the right end, the elastic frame is fixedly mounted on the inner wall of the base, the crimping block is fixedly mounted on the end portion of the elastic frame, the rotating shaft is located at the inner side of the base, a tooth groove head matched with the crimping block is fixedly mounted at one end of the inner wall of the base, the limiting strip matched with the crimping block is fixedly mounted on the inner wall of the base, the spinning sleeve is mounted on the outer wall of the end portion of the base in a spinning mode through threads, and the spinning sleeve is arranged on the outer side of the rotating shaft in a sleeved mode.

As a still further scheme of the invention: the water outlet pipe is assembled and communicated with the water outlet pipe through a pipeline.

As a still further scheme of the invention: the water inlet pipe and the water outlet pipe are tangent to the inner wall of the outer frame.

As a still further scheme of the invention: the water level sensor, the electromagnet and the motor are electrically connected with an external power supply and external control equipment through a wire harness, and the motor is a servo stepping motor.

Compared with the prior art, the invention has the beneficial effects that:

the invention has reasonable structural design, flexible and stable structure, high automation degree, self-adaptation according to real-time conditions, more thorough gas discharge under the condition of minimum water yield, good water standing effect under the action of the turbulent flow plate, and can avoid overflow of water from the exhaust pipe caused by over-adjustment in the adjustment process, reduce the number of precise drivers, reduce the failure rate and reduce the manufacturing and later maintenance cost.

Drawings

FIG. 1 is a schematic structural diagram of a degassing device for a fluid mechanical testing system.

FIG. 2 is a top view of the lower portion of the degassing device for a fluid machinery testing system, which is located between the outer frame, the spiral piece, the middle tube, the rotating shaft and the baffle.

FIG. 3 is a schematic top view of the upper part of the degassing device for the hydromechanical testing system, which is located between the outer frame, the spiral plate, the middle tube, the rotating shaft and the baffle.

FIG. 4 is a schematic top view of a degassing device for a fluid machinery testing system, wherein the degassing device comprises a rotating shaft, a baffle plate and a middle pipe.

FIG. 5 is a schematic front view of the degassing device for the fluid machinery testing system, wherein the degassing device comprises a housing, a middle tube, a motor, an electromagnet and an inserting rod.

FIG. 6 is a schematic bottom view of the carriage, the driven wheel, the inserted link and the swing link in the degassing device for the hydromechanical testing system.

FIG. 7 is a schematic structural diagram of a middle tube, a rotating shaft, a tooth socket head and a crimping block in the degassing device for the fluid machinery testing system.

FIG. 8 is a schematic structural diagram of the degassing shell, the floating block, the conical ring and the gas pipe in the degassing device for the fluid machinery testing system.

In the figure: the device comprises an outer frame 1, a through hole 2, a spiral sheet 3, an upper baffle 4, a water inlet pipe 5, a middle pipe 6, an air pipe 7, a water level sensor 8, a turbulent flow plate 9, a degassing shell 10, a water discharge pipe 11, a drainage head 12, a water outlet pipe 13, a rotating shaft 14, baffles 15, a lower baffle 16, an elastic frame 17, a limiting strip 18, a base 19, a spinning sleeve 20, a tooth socket head 21, a compression joint block 22, a floating block 23, a conical ring 24, a shell 25, a driven wheel 26, an anchor rod 27, a guide rod 28, a permanent magnet slide block 29, an electromagnet 30, a swing rod 31, an inserted rod 32, a tooth key sleeve 33, a slide seat 34, a motor 35, a slide pin 36, a baffle rod 37, a conical head 38, a bolt seat 39 and a collecting pipe 40.

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.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly and can be, for example, fixedly connected, disposed, detachably connected, disposed or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, in an embodiment of the present invention, a degassing apparatus for a fluid machinery testing system mainly includes an outer frame 1, a spiral sheet 3, a middle pipe 6, a degassing module, a degassing shell 10, a rotating shaft 14, a shaft locking seat and a driving module, wherein the middle part of the inner side of the outer frame 1 is fixedly installed with the middle pipe 6 in a penetrating manner, the spiral sheet 3 is fixedly installed on the outer side of the middle pipe 6, the upper and lower ends of the middle pipe 6 are assembled with a diversion head 12, the left ends of the two diversion heads 12 are installed with a manifold 40 through a tee joint, the upper and lower ends of the middle pipe 6 are fixedly installed with the shaft locking seat near the diversion head 12, the middle part of the inner side of the middle pipe 6 is installed with the driving module through bolt crimping, the rotating shaft 14 is rotatably installed between the upper and lower two shaft locking seats and the driving module, the side wall of the middle pipe 6 is provided with a through hole 2 stacked with a spiral, and the through hole 2 is located at an idle-off position of the spiral sheet 3, a baffle 15 matched with the through hole 2 is fixedly arranged on the outer side of the rotating shaft 14 through a hollow support, a water inlet pipe 5 is fixedly arranged on the right side of the upper part of the rear side wall of the outer frame 1 in a penetrating manner, an upper baffle 4 is fixedly arranged between the right side wall of the top end of the spiral piece 3 and the right inner wall of the top end of the outer frame 1, a water outlet pipe 13 is fixedly arranged on the left side of the lower part of the rear side wall of the outer frame 1 in a penetrating manner, and a lower baffle 16 is fixedly arranged between the side wall of the lower part of the spiral piece 3 and the inner wall of the left lower part of the outer frame 1;

the air purifier is characterized in that a degassing shell 10 is fixedly mounted at the lower portion of the left side of the outer frame 1, the collecting pipe 40 penetrates through and is fixedly connected with the side wall of the top end of the degassing shell 10, turbulent flow plates 9 which are arranged in a stacked mode are fixedly mounted on the inner wall of the degassing shell 10, an exhaust module is fixedly mounted at the left portion of the top end of the degassing shell 10 in a penetrating mode, a water level sensor 8 is fixedly mounted on the side wall of the upper portion of the left side of the degassing shell 10 in an embedded mode, a drain pipe 11 is fixedly mounted at the bottom end of the degassing shell 10 in a penetrating mode, and the top end position of the drain pipe 11 and the bottom end position of the water level sensor 8 are located on the same horizontal plane.

Exhaust module mainly includes trachea 7, floating block 23, awl ring 24, pin 37 and conical head 38, the inboard lower part fixed mounting of trachea 7 has

awl ring

24, and 24 middle parts of awl ring are pegged graft and are installed awl head 38, and 38 bottom fixed mounting of awl head has floating block 23, 38 top fixed mounting of awl head has pin 37, and pin 37 sets up at 24 upper portion lateral walls of awl ring.

The lock axle bed mainly includes elastic frame 17, spacing 18, base 19, spinning cover 20 and crimping piece 22, both ends and well 6 inner wall fixed connection in the pipe about

base

19, 19 inner wall fixed mounting of base have

elastic frame

17, and 17 end fixing of elastic frame installs crimping piece 22, the one end fixed mounting that pivot 14 is located base 19 inboard has with crimping piece 22 complex

tooth groove head

21, 19 inner wall fixed mounting of base have with crimping piece 22 complex spacing 18, 19 tip outer walls of base are installed with spinning cover 20 through the screw thread swivelling joint, and spinning cover 20 covers and establishes and install in the 14 outsides of pivot.

The water outlet pipe 11 is assembled and communicated with the water outlet pipe 13 through a pipeline.

The water inlet pipe 5 and the water outlet pipe 13 are tangent to the inner wall of the outer frame 1.

The water level sensor 8, the electromagnet 30 and the motor 35 are electrically connected with an external power supply and external control equipment through a wiring harness, and the motor 35 is a servo stepping motor.

The working principle of the invention is as follows:

the invention relates to a degassing device for a fluid machinery test system, which has flexible and stable degassing structure and high automation degree, water enters from the upper part and flows out from the lower part, and through the spiral sheet and the tangential incident angle, the water has the potential energy of spiral flow in the outer frame 1, because of the existence of centrifugal force, the water is extruded to the inner wall position of the outer frame 1, so that the air bubbles in the water are concentrated at the position of the middle pipe 6, and flows into the middle pipe 6 through the through hole 2 and further enters the degassing shell 10, after the water flows into the degassing shell 10, under the turbulent action of the turbulent flow plate 9, the water velocity is reduced, standing is carried out, so that bubbles in water float upwards, when the water level in the degassing shell 10 is higher than the highest end of the drain pipe 11, the standing water is discharged from the drain pipe 11 and converged into a test system, and the gas is continuously discharged from the exhaust module, so that the degassing process of the fluid is realized;

when the gas in the water is too much, the gas mixed with the water flowing into the degassing shell 10 is too much, the water quantity is reduced, the water level sensor 8 detects that the water level in the degassing shell 10 is reduced, when the water level is lower than the lowest threshold value, the water level sensor 8 transmits a detection signal to an external control device, the external control device energizes the electromagnet 30 to attract the permanent magnet slide block 29 upwards, so that the motor 35 is linked with the lower rotating shaft 14 through the inserted link 32 and the driven wheel 26, drives the baffle to rotate for a certain angle, the baffle plate and the through hole 2 at the lower part are staggered by a larger gap, more water and air at the sufficient gas-liquid separation position are led into the middle pipe 6, more water is led into the degassing shell 10, meanwhile, the air is more, the degassing speed of the effluent is increased, the degassing efficiency is improved, after the lower rotating shaft rotates 90 degrees, the water level inside the degassing shell 10 is still not high, which indicates that the gas inclusion amount in the water is too much;

the control equipment is that the electromagnet 30 is electrified to attract the permanent magnet sliding block 29 downwards, so that the motor 35 is linked with the upper rotating shaft 14 through the inserted link 32 and the driven wheel 26 to drive the baffle to rotate for a certain angle, the baffle is staggered with a larger gap from the through hole 2 at the upper part, the water yield of the middle pipe is further improved, more air falls to sleep on more water to discharge out of the outer frame, and the elastic frame 17 and the crimping block 22 tightly press the tooth socket head 21, so that the rotating shaft cannot rotate under the drive of the motor, the position of the device is ensured to be stable, until the water level sensor 8 detects that the water level in the degassing shell 10 is at a high position, the situation shows that air mixed in the water is carried and discharged by water with a more proper volume, the air is discharged more thoroughly under the minimum water yield, the degassing is ensured to be thorough, and the water delivery flow of the equipment is prevented from being influenced too much;

and in order to prevent excessive adjustment from occurring in the adjustment process and causing water to overflow from the exhaust pipe, the exhaust pipe is provided with a one-way structure, when water exceeds the floating block position, the surface of the conical ring 24 and the conical head 38 can be pushed to be compressed, so that water and air can not be discharged from the exhaust pipe, the water at the lower part is discharged from the drain pipe 11, the water level is reduced, the water overflow is avoided, the waste and the pollution to the external space are avoided, the driving device adopts a structure of single-motor double-independent driving, the number of drivers is reduced, the number of precise drivers is small, the failure rate is reduced, and the manufacturing cost and the later maintenance cost can be reduced.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A degassing device for a fluid machinery test system mainly comprises an outer frame (1), spiral sheets (3), a middle pipe (6), an exhaust module, a degassing shell (10), a rotating shaft (14), a lock shaft seat and a driving module, and is characterized in that the middle of the inner side of the outer frame (1) is penetrated through and fixedly installed with the middle pipe (6), the outer side of the middle pipe (6) is fixedly installed with the spiral sheets (3), the upper end and the lower end of the middle pipe (6) are provided with drainage heads (12), the left ends of the two drainage heads (12) are provided with a collecting pipe (40) through a tee joint, the inner wall of the upper end and the lower end of the middle pipe (6) close to the drainage heads (12) is fixedly installed with the lock shaft seat, the middle of the inner side of the middle pipe (6) is provided with the driving module through bolt crimping, the rotating shaft (14) is rotatably installed between the upper and the lower two lock shaft seats and the driving module, the side wall of the middle pipe (6) is provided with a through hole (2) which is stacked with a spiral, the through hole (2) is located at the air break position of the spiral piece (3), a baffle (15) matched with the through hole (2) is fixedly installed on the outer side of the rotating shaft (14) through a hollow support, a water inlet pipe (5) penetrates through the right side of the upper portion of the rear side wall of the outer frame (1) and is fixedly installed, an upper baffle (4) is fixedly installed between the right side wall of the top end of the spiral piece (3) and the right inner wall of the top end of the outer frame (1), a water outlet pipe (13) penetrates through the left side of the lower portion of the rear side wall of the outer frame (1) and is fixedly installed, and a lower baffle (16) is fixedly installed between the lower portion side wall of the spiral piece (3) and the inner wall of the left lower portion of the outer frame (1);

a degassing shell (10) is fixedly installed at the lower part of the left side of the outer frame (1), the collecting pipe (40) penetrates through and is fixedly connected with the side wall of the top end of the degassing shell (10), turbulent flow plates (9) which are arranged in a stacked mode are fixedly installed on the inner wall of the degassing shell (10), an exhaust module is fixedly installed at the left part of the top end of the degassing shell (10) in a penetrating mode, a water level sensor (8) is fixedly installed on the side wall of the upper part of the left side of the degassing shell (10) in an embedded mode, a drain pipe (11) is fixedly installed at the bottom end of the degassing shell (10) in a penetrating mode, and the top end position of the drain pipe (11) and the bottom end position of the water level sensor (8) are located on the same horizontal plane;

the driving module mainly comprises a shell (25), a driven wheel (26), an anchor rod (27), a guide rod (28), a permanent magnetic slider (29), an electromagnet (30), a swing rod (31), an inserted bar (32), a sliding seat (34), a motor (35), a sliding pin (36) and a bolt seat (39), wherein the left side wall and the right side wall of the shell (25) are fixedly provided with the bolt seat (39), the bolt seat (39) is fixedly connected with the middle side wall of the middle pipe (6) through a bolt, the sliding seat (34) is fixedly arranged on the inner wall of the middle part of the rear side of the shell (25), the inserted bar (32) is slidably arranged in the middle of the sliding seat (34), the driven wheel (26) which is symmetrically arranged is fixedly arranged on the outer side of the inserted bar (32), the motor (35) is fixedly arranged on the left part of the inner side of the shell (25), a motor shaft of the motor (35) is respectively meshed with the driven wheel (26) through an external gear, and a gear sleeve (33) is fixedly arranged on the end part of the rotating shaft (14) positioned inside the shell (25), the utility model discloses a slide bar, including shell (25), anchor rod (32), pendulum rod (29), slide pin (36) are installed to fixed mounting respectively at shell (25) rear side right part inner wall fixed mounting has stock (27), and stock (27) front end rotates and installs pendulum rod (31), shell (25) right side inner wall fixed mounting has electromagnet (30) that the symmetry set up, two fixed mounting has guide arm (28) between electromagnet (30), and permanent magnetism slider (29) are installed in guide arm (28) outside sliding connection, fixed mounting respectively at inserted bar (32) front end and permanent magnetism slider (29) front end has slide pin (36), the spout with slide pin (36) complex has been seted up to pendulum rod (31) tip.

2. The degassing device for the fluid machinery test system according to claim 1, wherein the exhaust module mainly comprises an air pipe (7), a floating block (23), a conical ring (24), a stop lever (37) and a conical head (38), the conical ring (24) is fixedly mounted on the lower portion of the inner side of the air pipe (7), the conical head (38) is inserted into the middle of the conical ring (24), the floating block (23) is fixedly mounted on the bottom end of the conical head (38), the stop lever (37) is fixedly mounted on the top end of the conical head (38), and the stop lever (37) is erected on the side wall of the upper portion of the conical ring (24).

3. The degassing apparatus for a fluid mechanical testing system according to claim 1, the lock shaft seat mainly comprises an elastic frame (17), a limiting strip (18), a base (19), a spinning sleeve (20) and a crimping block (22), the left end and the right end of the base (19) are fixedly connected with the inner wall of the middle pipe (6), an elastic frame (17) is fixedly arranged on the inner wall of the base (19), a pressure joint block (22) is fixedly arranged at the end part of the elastic frame (17), one end of the rotating shaft (14) positioned at the inner side of the base (19) is fixedly provided with a tooth groove head (21) matched with the pressure joint block (22), the inner wall of the base (19) is fixedly provided with a limit strip (18) matched with the pressure joint block (22), the outer wall of the end part of the base (19) is rotatably connected with a spinning sleeve (20) through threads, and the spinning sleeve (20) is sleeved on the outer side of the rotating shaft (14).

4. The degassing device for a fluid mechanical testing system according to claim 1, wherein the water outlet pipe (11) is in assembled communication with the water outlet pipe (13) through a pipeline.

5. The degassing device for a fluid machinery test system according to claim 1, wherein the water inlet pipe (5) and the water outlet pipe (13) are tangential to the inner wall of the outer frame (1).

6. The degassing device for the fluid machinery test system according to claim 1, wherein the water level sensor (8), the electromagnet (30) and the motor (35) are electrically connected with an external power supply and external control equipment through a wiring harness, and the motor (35) adopts a servo stepping motor.