CN210803476U - Device for detecting air dissolving rate by extruding and hand-cranking hydraulic oil - Google Patents
Device for detecting air dissolving rate by extruding and hand-cranking hydraulic oil Download PDFInfo
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- CN210803476U CN210803476U CN201921113912.4U CN201921113912U CN210803476U CN 210803476 U CN210803476 U CN 210803476U CN 201921113912 U CN201921113912 U CN 201921113912U CN 210803476 U CN210803476 U CN 210803476U
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Abstract
The utility model discloses an extrusion and hand hydraulic oil are in order to detect device of dissolved air rate, the device includes: the container comprises an oil storage cavity, an oil inlet and an oil outlet, wherein the oil inlet is provided with a first valve, and the oil outlet is provided with a second valve; the hand crank is arranged on the container and comprises a first end and a second end, and the first end extends into the oil storage cavity; the rotating piece is arranged at the first end of the hand crank, and the hand crank drives the rotating piece to rotate; the thorn ball is arranged on the rotating piece; the liquid pumping mechanism comprises a pump oil chamber, a vertical partition plate, a piston and a liquid pumping rod, wherein an oil outlet channel is arranged on the piston, and a first one-way valve is arranged on the oil outlet channel; the piston is driven by the liquid pumping rod to reciprocate, so that a negative pressure is formed in the oil pumping chamber, and hydraulic oil in the oil storage chamber enters the oil pumping chamber and is discharged through the oil outlet channel and the oil outlet nozzle. The device can simply and efficiently detect the air dissolving rate in the hydraulic oil.
Description
Technical Field
The utility model relates to an extrusion and hand device of hydraulic oil in order to detect dissolved air rate belongs to hydraulic oil dissolved air rate and calculates technical field.
Background
The hydraulic oil serving as a common working medium of a hydraulic system not only transmits power, but also plays roles of lubricating and cooling the hydraulic system and other devices, but gas in the hydraulic oil has a great adverse effect on the stable operation of a mechanism. For the high-power hydraulic operating mechanism, the compressibility and elastic deformation of hydraulic oil cannot be considered when analyzing pressure changes of all parts of a hydraulic system, particularly dynamic pressure changes of a buffer cavity. The dynamic changes of the load and the acting force caused by the elastic deformation of the hydraulic system not only can affect the mechanical characteristics of the circuit breaker, but also can affect the reliability of the operating mechanism.
If gas is mixed in the hydraulic mechanism oil circulating system, the pressure in the system is unstable, and when the gas exists in the oil, the elastic modulus of the oil is greatly reduced, so that the response delay of the system is caused, and the rigidity and the corresponding characteristics of the system are influenced. When a large amount of free gas exists in the oil, local high temperature is generated when the gas is rapidly compressed, causing oil carbonization. When oil enters low pressure from high pressure due to overhigh local flow velocity and violent pressure change in the system, gas in the hydraulic oil can be separated, bubbles can expand and break instantly, and local high-pressure impact is generated at the moment to cause cavitation on the surface of a hydraulic element. The increase of the air content inevitably generates oxidation corrosion effect on the oil, increases the acid value of the oil and shortens the service life of the oil.
The research on hydraulic oil gas at home and abroad mainly focuses on the dissolution mechanism of the gas, the generation principle of the gas, the chromatographic analysis of various gases and the like. At present, no relevant report on the detection of gas dissolved in hydraulic oil is seen, and particularly when no external power supply is available in the field or the power supply is inconvenient to access, a device for simply and efficiently detecting the gas dissolving rate in the hydraulic oil through a physical principle is more desirable.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the device for detecting the air dissolving rate by extruding and hand-cranking the hydraulic oil is provided, and the air dissolving rate in the hydraulic oil can be simply and efficiently detected through the physical principle so as to overcome the defects of the prior art.
The technical scheme of the utility model is that: a device for pressing out and hand shaking hydraulic oil to detect air dissolution rate, the device comprising:
the container comprises an oil storage cavity, an oil inlet and an oil outlet, wherein the oil inlet is provided with a first valve, and the oil outlet is provided with a second valve;
the hand crank is arranged on the container and comprises a first end and a second end, and the first end extends into the oil storage cavity;
the rotating piece is arranged at the first end of the hand crank, and the hand crank drives the rotating piece to rotate;
the thorn ball is arranged on the rotating piece; and
the liquid pumping mechanism comprises a pump oil chamber, a vertical partition plate, a piston and a liquid pumping rod, wherein the pump oil chamber is provided with a pump oil inlet and an oil outlet nozzle, the vertical partition plate is arranged on the inner bottom surface of the pump oil chamber to separate the pump oil inlet from the oil outlet nozzle, a gap is formed between the vertical partition plate and the top of an inner cavity of the pump oil chamber, the pump oil inlet is communicated with an oil outlet of the container, the piston is arranged in the pump oil chamber and close to the side of the oil outlet nozzle, the piston is positioned between the side wall of the pump oil chamber and the vertical partition plate, the top of the piston is connected with the liquid pumping rod extending out of the pump oil chamber, an oil outlet channel is arranged on the piston, and a first one-way valve is arranged on the oil outlet channel;
the piston is driven by the liquid pumping rod to reciprocate, so that the oil pumping chamber forms negative pressure, and hydraulic oil in the oil storage chamber enters the oil pumping chamber and is discharged through the oil outlet channel and the oil outlet nozzle.
And a second one-way valve is arranged on a pipeline between the oil outlet of the oil storage cavity and the pump oil inlet of the pump oil chamber.
The device further comprises:
the oil inlet pipe is vertically arranged, and the lower end of the oil inlet pipe is communicated with the oil inlet;
and the oil inlet disc is arranged at the upper end of the oil inlet pipe, and the height of the oil inlet disc is higher than that of the oil storage cavity.
The thorn ball comprises a ball body and sharp thorns uniformly distributed on the surface of the ball body.
The top end of the oil storage cavity is open, and a cover body is arranged at the opening in a matched mode.
The upper part of the oil storage cavity is provided with a scale value.
The oil storage cavity is of a cylindrical structure, and the top of the oil storage cavity is of an inverted funnel-shaped structure.
The utility model has the advantages that: the utility model discloses earlier can extrude the hydraulic oil of oil storage intracavity one by one through drawing liquid mechanism, make the oil storage intracavity form certain negative pressure, rethread hand rocking handle drives and rotates a rotation piece and rotates, can make thorn ball and hydraulic oil extrusion contact, because thorn ball most advanced position can provide the position for the gas molecule nucleation grows up the gassing, consequently just can promote the bubble soon and break away from hydraulic oil and come up, through measuring the volume that changes around the hydraulic oil, perhaps gaseous volume change can calculate the dissolved gas rate of hydraulic oil fast. The utility model has the advantages of the structure is ingenious, convenient operation, and the practicality is strong, can simple efficient detect out the dissolved air rate in the hydraulic oil.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the container of FIG. 1;
FIG. 3 is a schematic structural view of the fluid pumping mechanism of FIG. 1;
FIG. 4 is a schematic view of the rotating member shown in FIG. 1;
description of reference numerals:
1 container, 2 hand crank, 3 rotating piece, 4 thorn ball, 5 liquid pumping mechanism, 6 oil inlet pipe, 7 oil inlet disk;
11 oil storage cavity, 12 oil inlet, 13 oil outlet, 14 first valve, 15 second valve, 16 scale value, 17 cover body and 18 base;
21 handle part, 22 connecting rod part, 23 rotating part;
31 rotating shaft, 32 cross bar;
the oil pump comprises a pump oil chamber 51, a pump oil inlet 52, an oil outlet 53, a vertical partition plate 54, a piston 55, a liquid pumping rod 56, a second one-way valve 57, an oil outlet channel 58, a first one-way valve 59 and a limiting block 60.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments:
referring to fig. 1, according to the embodiment of the present invention, a device for pressing out and hand-cranking hydraulic oil to detect a gas dissolving rate includes a container 1, an oil inlet pipe 6, an oil inlet plate 7, a crank 2, a rotating member 3, a pricking ball 4 and a liquid pumping mechanism 5.
Referring to fig. 1 and 2, the container 1 includes an oil storage chamber 11, an oil inlet 12 and an oil outlet 13. The oil storage chamber 11 is a container 1, and is mainly used for containing hydraulic oil. The oil inlet 12 is a pipe body extending outwards and is mainly used for injecting hydraulic oil into the oil storage cavity 11. The oil outlet 13 is an outwardly extending pipe body, mainly used for discharging the hydraulic oil in the oil storage chamber 11, and is preferably arranged at the bottom of the side surface of the oil storage chamber 11. A base 18 is provided at the bottom of the container 1.
A scale value 16 is provided at the upper portion of the oil storage chamber 11, and is mainly used for measuring the upper air volume of the oil storage container 1 or measuring the volume of hydraulic oil. The top end of the oil storage chamber 11 is open, and a cover 17 is provided at the opening in a matching manner, for example, the cover 17 may be a cap body, and the cap body may be detachably mounted at the opening, for example, a sealing cap, to close and open the upper end of the oil storage chamber 11.
In one example, the oil storage chamber 11 has a cylindrical body, an inverted funnel-shaped top, and an oil inlet 12 and an oil outlet 13 respectively formed at lower portions of two opposite sidewalls.
A first valve 14 is arranged at the oil inlet 12 and a second valve 15 is arranged at the oil outlet 13. The first valve 14 and the second valve 15 are mainly used for opening and closing the oil inlet 12 and the oil outlet 13, and the valves are conventional valve body switching devices, such as manual valves, electric valves and the like.
Referring to fig. 1, the oil inlet pipe 6 is vertically arranged, and the lower end thereof is communicated with the oil inlet 12, so that hydraulic oil can be injected into the oil storage cavity 11 through the oil inlet pipe 6.
Referring to fig. 1, an oil inlet plate 7 is disposed at an upper end of the oil inlet pipe 6. The oil inlet disc 7 is in a horn shape, and the function of quickly pouring and injecting hydraulic oil can be realized due to the large opening of the oil inlet disc 7. Preferably, the height of the oil inlet disc 7 is higher than that of the oil storage cavity 11.
Referring to fig. 1 and 4, the handle 2 is disposed on the container 1 and includes a first end and a second end, and the first end extends into the oil storage chamber 11. Specifically, the hand crank 2 includes a handle portion 21, a link portion 22 and a rotating portion 23, wherein a handle end is connected to the rotating portion 23 through the link portion 22 and forms a zigzag shape, a first end is located at an end portion of the rotating portion 23, and a second end is located at the handle end, wherein an inner end of the rotating portion 23 penetrates through a side wall of the container 1 and is connected to the rotating member 3. In order to avoid the leakage of hydraulic oil, a sealing ring may be used to seal the rotating part 23 and the container 1, so as to ensure that the rotating part 23 does not leak oil during rotation.
Rotate the piece 3, set up and be in on the first end of crank 2, crank 2 drive rotate piece 3 rotates. Specifically, the rotating member 3 includes a rotating shaft 31 and a plurality of cross bars 32, and the plurality of cross bars 32 are transversely arranged at different heights and radial positions of the rotating shaft 31. The middle part of the rotating shaft 31 is connected with the rotating part 23 of the hand crank 2 to receive the rotating torque transmitted by the hand crank 2 and drive the thorn ball 4 to rotate.
Referring to fig. 1, the thorn ball 4 is disposed on the rotation member 3. When the rotating member 3 rotates, it drives the barbed ball 4 to rotate in the oil storage chamber 11 and to be in pressing contact with the hydraulic oil. Preferably, the barbed ball 4 comprises a ball body and spikes, and a plurality of spikes are uniformly distributed on the surface of the ball body to form a barbed ball body. The purpose of the spikes is that because of the high density of oil, a nucleation site is needed for gas molecules to form gas (like artificial rainfall is used for beating a powder nucleating agent into the air to promote saturated water vapor to become liquid). The barbed ball 4 may be made of steel, for example. Because the thorn ball 4 is formed by uniformly distributing a plurality of sharp spines on the surface of the ball body, the tip part of the thorn ball 4 can provide a position for gas molecules to nucleate and grow into bubbles in the extrusion contact process of the thorn ball and hydraulic oil, and the thorn ball 4 rotates in the oil storage cavity 11, so that the bubbles can be quickly promoted to be separated from the hydraulic oil and float upwards.
Referring to fig. 1 and 3, the pumping mechanism 5 includes a pumping chamber 51, a vertical partition 54, a piston 55, and a pumping rod 56.
The pump oil chamber 51 has a pump oil inlet 52 and an oil outlet 53, and the pump oil inlet 52 and the oil outlet 53 are located on both sides of the pump oil chamber 51, respectively.
A vertical partition plate 54 is provided on the inner bottom surface of the pump oil chamber 51 to partition the pump oil inlet 52 and the oil outlet 53, and the vertical partition plate 54 has a gap from the top of the inner cavity of the pump oil chamber 51, the pump oil inlet 52 communicating with the oil outlet 13 of the container 1. In other words, the vertical partition plate 54 partitions the lower space of the pumping chamber 51, but the upper space of the pumping chamber 51 is communicated so that the hydraulic oil can flow from the side of the pumping oil inlet 52 to the side of the oil outlet 53.
The piston 55 is arranged in the pump oil chamber 51 near the oil outlet 53 side, the piston 55 is positioned between the side wall of the pump oil chamber 51 and the vertical partition plate 54, and the piston 55 can reciprocate in the vertical direction. In order to prevent the piston 55 from separating upward from the top end of the vertical partition plate 54, a stopper 60 may be provided on the top side surface of the vertical partition plate 54 and the inner wall surface of the pumping chamber 51, and the stopper 60 may prevent the piston 55 from separating from the top end of the vertical partition plate 54.
A pumping rod 56 extending out of the pump oil chamber 51 is connected to the top of the piston 55, and the piston 55 is driven to reciprocate by the pumping rod 56. The piston 55 is provided with an oil outlet passage 58, and the oil outlet passage 58 is provided with a first check valve 59, and the first check valve 59 can discharge the gas in the pumping chamber 51 to the outside, but the outside air cannot reversely enter the pumping chamber 51. In this way, the piston 55 is driven by the pumping rod 56 to reciprocate, so that the pump oil chamber 51 is made negative pressure, and the hydraulic oil in the oil storage chamber 11 is introduced into the pump oil chamber 51 and discharged through the oil outlet passage 58 and the oil outlet nozzle 53. Specifically, when the piston 55 reciprocates, air in the pump oil chamber 51 can be discharged one by one, so that a large negative pressure is formed in the pump oil chamber 51, hydraulic oil in the oil storage chamber is rapidly pumped out, and a certain negative pressure is formed in the oil storage chamber 11, so that bubbles in the hydraulic oil are enabled to overflow.
Preferably, a second check valve 57 is provided on a pipe between the oil outlet 13 of the oil reservoir chamber 11 and the pump oil inlet 52 of the pump oil chamber 51. The second check valve 57 allows the liquid in the oil reservoir to flow into the pump oil chamber 51 in one direction, but prevents the hydraulic oil and air in the pump oil chamber 51 from flowing back into the oil reservoir.
According to the utility model discloses an extrusion and hand hydraulic oil are with the application method who detects device of dissolved air rate, include following step:
And 2, closing the first valve 14, opening the second valve 15, pulling the liquid pumping rod 56 to drive the piston 55 to move, so that part of the hydraulic oil in the oil storage cavity 11 enters the oil pumping chamber 51 and is discharged through the oil outlet channel 58 and the oil outlet nozzle 53, recording the volume V1 of the hydraulic oil in the oil storage cavity 11 after liquid pumping, and closing the second valve 15 after liquid pumping is finished. This step creates a greater negative pressure in the oil reservoir chamber 11 to facilitate the escape of air bubbles in the hydraulic oil.
and 4, standing the container 1, recording the volume V2 of the hydraulic oil in the oil storage cavity 11 at the moment after the dissolved air in the hydraulic oil overflows and rises to the upper part of the oil storage cavity 11, and calculating the air dissolving rate of the hydraulic oil through a formula (V1-V2)/V1. Of course, in other embodiments, the air dissolution rate may be calculated by calculating the air dissolution increase amount according to the change of the gas volume before and after the rotation of the thorn ball 4 in the oil storage chamber 11, and then dividing the air dissolution increase amount by the V1.
In one example, during detection, the respective gas dissolving rates of the standard hydraulic oil and the actual hydraulic oil are respectively measured by the method, and then whether the gas content of the actual hydraulic oil is more than that of the standard hydraulic oil is obtained by comparison, so that the gas dissolving state of the actual hydraulic oil can be rapidly judged. In other examples, can test out the dissolved air volume of multiple actual hydraulic oil in advance, for example qualified, unqualified, then pass through actual hydraulic oil the utility model discloses whether qualified hydraulic oil can be judged fast with it to the dissolved air rate that reachs.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (7)
1. The utility model provides a device of extrusion and hand hydraulic oil in order to detect dissolved air rate which characterized in that, the device includes:
the container (1) comprises an oil storage cavity (11), an oil inlet (12) and an oil outlet (13), wherein a first valve (14) is arranged at the oil inlet (12), and a second valve (15) is arranged at the oil outlet (13);
the hand crank (2) is arranged on the container (1) and comprises a first end and a second end, and the first end extends into the oil storage cavity (11);
the rotating piece (3) is arranged at the first end of the hand crank (2), and the hand crank (2) drives the rotating piece (3) to rotate;
a barbed ball (4) provided on the rotating member (3); and
liquid pumping mechanism (5), including pump oil room (51), vertical baffle (54), piston (55), liquid pumping rod (56), pump oil room (51) have pump oil import (52) and oil outlet (53), vertical baffle (54) set up on the interior bottom surface of pump oil room (51), in order to with pump oil import (52) with oil outlet (53) separate, just vertical baffle (54) with pump oil room (51) inner chamber top has the clearance, pump oil import (52) with oil-out (13) intercommunication of container (1), piston (55) set up in pump oil room (51) are close to oil outlet (53) side, piston (55) are located pump oil room (51) lateral wall with between vertical baffle (54), piston (55) top is connected with extend outside pump oil room (51) liquid pumping rod (56), an oil outlet channel (58) is arranged on the piston (55), and a first one-way valve (59) is arranged on the oil outlet channel (58);
through draw liquid pole (56) drive piston (55) reciprocating motion makes pump oil room (51) form the negative pressure, make hydraulic oil in the oil storage chamber (11) enter into in the pump oil room (51), and the process go out oil passageway (58) and oil outlet (53) are discharged.
2. The device for pressing out and cranking hydraulic oil to detect the air dissolving rate as claimed in claim 1, wherein a second one-way valve (57) is arranged on a pipeline between the oil outlet (13) of the oil storage chamber (11) and the pump oil inlet (52) of the pump oil chamber (51).
3. The apparatus for pumping and hand shaking hydraulic oil to detect air dissolution rate of claim 2, further comprising:
the oil inlet pipe (6) is vertically arranged, and the lower end of the oil inlet pipe is communicated with the oil inlet (12);
and the oil inlet disc (7) is arranged at the upper end of the oil inlet pipe (6), and the height of the oil inlet disc (7) is higher than that of the oil storage cavity (11).
4. The device for detecting the dissolved air rate by pressing out and manually shaking the hydraulic oil according to claim 3, wherein the pricking ball (4) comprises a ball body and sharp pricks uniformly distributed on the surface of the ball body.
5. The device for detecting the dissolved air rate by pressing out and manually shaking the hydraulic oil according to claim 4, wherein the top end of the oil storage cavity (11) is open, and a cover body (17) is arranged at the opening in a matching way.
6. Device for pressing out and hand cranking hydraulic oil to detect air dissolving rate according to claim 4, characterized in that the upper part of the oil storage chamber (11) is provided with a scale value (16).
7. The device for pressing out and shaking up hydraulic oil to detect the air dissolving rate as claimed in claim 4, wherein the oil storage chamber (11) is of a cylindrical structure, and the top of the oil storage chamber is of an inverted funnel-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113912.4U CN210803476U (en) | 2019-07-16 | 2019-07-16 | Device for detecting air dissolving rate by extruding and hand-cranking hydraulic oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921113912.4U CN210803476U (en) | 2019-07-16 | 2019-07-16 | Device for detecting air dissolving rate by extruding and hand-cranking hydraulic oil |
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| Publication Number | Publication Date |
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| CN210803476U true CN210803476U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921113912.4U Active CN210803476U (en) | 2019-07-16 | 2019-07-16 | Device for detecting air dissolving rate by extruding and hand-cranking hydraulic oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231460A (en) * | 2019-07-16 | 2019-09-13 | 贵州电网有限责任公司 | A kind of extrusion and hand hydraulic oil is to detect the device and its application method of dissolved-air rate |
-
2019
- 2019-07-16 CN CN201921113912.4U patent/CN210803476U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231460A (en) * | 2019-07-16 | 2019-09-13 | 贵州电网有限责任公司 | A kind of extrusion and hand hydraulic oil is to detect the device and its application method of dissolved-air rate |
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