CN212868047U - Hydraulic accumulator inflating and pressure measuring device - Google Patents
Hydraulic accumulator inflating and pressure measuring device Download PDFInfo
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- CN212868047U CN212868047U CN202020452450.5U CN202020452450U CN212868047U CN 212868047 U CN212868047 U CN 212868047U CN 202020452450 U CN202020452450 U CN 202020452450U CN 212868047 U CN212868047 U CN 212868047U
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Abstract
The utility model provides a hydraulic accumulator inflating and pressure measuring device, which comprises a device main body, wherein the left end of the device main body is an accumulator interface which is tightly connected with the hydraulic accumulator and is communicated with the inside of a gallbladder or a diaphragm of the hydraulic accumulator, and the accumulator interface is provided with a thimble which is propped against a valve inside; the side wall of the device main body is provided with an interface with a pressure gauge and an air source, and the device main body is also provided with an ejector pin control mechanism for controlling the ejector pin to eject the valve core; the thimble control mechanism comprises a finger shaft with one end coaxially abutted against the thimble, the other end of the finger shaft is sleeved in a finger shaft sleeve, and the finger shaft sleeve is fully filled in a cavity at the right end of the device main body; an end cover nut is arranged on the outer side of the right end of the device main body, and a knob coaxial with the finger shaft is screwed in the center of the end cover nut. The utility model provides a sealed easy wearing and tearing inefficacy of finger axle of current traditional fluid energy storage gas nitrogen filling device, and cause the unable problem of filling nitrogen.
Description
Technical Field
The invention relates to a hydraulic accumulator inflation and pressure measurement device.
Background
The hydraulic accumulator is an element with the functions of storing hydraulic energy, maintaining pressure, absorbing hydraulic impact and the like in a hydraulic system, and is mostly a bladder type or diaphragm type accumulator, wherein a bladder or one side of a diaphragm is filled with high-pressure gas which is generally nitrogen or other gases, particularly inert gases; the other side of the gallbladder or the diaphragm is communicated with a hydraulic high-pressure oil way, and the aim of storing high-pressure hydraulic oil is fulfilled by utilizing the compressibility of gas. After the energy accumulator is used for a period of time, the gas pressure in the gallbladder or the diaphragm needs to be periodically supplemented due to natural leakage and the like. The pressure of the gas in the gall bladder or the diaphragm is very high, up to 10 MPa, which is dozens of times of the pressure in the automobile tire, so a special inflating device is needed. Meanwhile, a conventional inflator, for example, chinese patent publication No. CN110799319A, discloses an inflator that fills air into a tire clamped by a first rim and a second rim in a tire width direction, the inflator including: a first rim support portion supporting the first rim; a second rim support portion that is arranged side by side in an axial direction with respect to the first rim support portion and supports the second rim; a movement restricting portion that restricts movement of one of the first and second rim support portions in the axial direction to a side separated from the other rim support portion; a position adjusting rod penetrating the one rim support portion and extending in the axial direction toward the other rim support portion; a connector attached to the other rim support portion to connect the other rim support portion to the position adjustment rod; and a rim in-out device that moves the one rim support portion in and out of the one side close to the other rim support portion in the axial direction.
The inflator can suppress the height of the inflator from becoming high, and can inflate a tire even if the tire has a narrow width. However, since the pressure of the gas in the bladder or in the diaphragm of the hydraulic accumulator is very high, which is several tens of times higher than the pressure of the gas in the tires of cars, trucks, buses, etc., the above-mentioned inflation device for inflating tires used in such cars, trucks, buses, etc., cannot inflate the bladder or the diaphragm of the hydraulic accumulator.
Disclosure of Invention
The invention aims to provide an inflation and pressure measurement device for a hydraulic energy accumulator, aiming at the problem that the traditional inflation device cannot inflate the gallbladder or a diaphragm of the hydraulic energy accumulator.
The technical scheme of the hydraulic energy accumulator inflating device is as follows: a hydraulic energy accumulator inflating device comprises a device main body, wherein the device main body is provided with a cavity penetrating through the left end and the right end, the left end of the device main body is provided with an energy accumulator interface which is tightly connected with a hydraulic energy accumulator and used for inflating the hydraulic energy accumulator into a gallbladder or a diaphragm, and the energy accumulator interface is internally provided with a thimble which is propped against a valve core; a first joint connected with a high-pressure air source is arranged on the side wall of the device main body, and an ejector pin control mechanism for controlling the ejector pin to eject the valve core is also arranged in the device main body; the thimble control mechanism comprises a finger shaft with one end coaxially abutted against the thimble, the other end of the finger shaft is sleeved in a finger shaft sleeve, and the finger shaft sleeve is fully filled in a cavity at the right end of the device main body; an end cover nut is arranged on the outer side of the right end of the device main body, and a knob coaxial with the finger shaft is screwed in the center of the end cover nut.
Further, in the hydraulic accumulator charging apparatus described above: the energy storage interface comprises a second joint and an interface nut; the second joint is a pipe body with a flange at one end, the thimble penetrates through the middle of the pipe body, and the outer side of the other end of the thimble is provided with an external thread meshed with the internal thread at the left end of the device main body; the interface nut is buckled on the flange of the second joint and is provided with an internal thread meshed with the external thread on the corresponding solenoid on the energy accumulator.
Further, in the hydraulic accumulator charging apparatus described above: and sealing gaskets are also arranged between the second joint and the interface nut and between the finger shaft sleeve and the device main body.
Further, in the hydraulic accumulator charging apparatus described above: and a flange screwed by hand is also arranged on the knob.
Further, in the hydraulic accumulator charging apparatus described above: the finger shaft adopts a valve needle of a diesel engine oil nozzle matching part, and the finger shaft sleeve is a valve plug formed by cutting off the tail part of a valve body of the diesel engine oil nozzle matching part.
The technical scheme of the pressure measuring device of the hydraulic energy accumulator is as follows: a pressure measuring device of a hydraulic energy accumulator comprises a device main body, wherein the device main body is provided with a cavity penetrating through the left end and the right end, the left end of the device main body is provided with an energy accumulator interface which is tightly connected with the hydraulic energy accumulator and is communicated with the inside of a gallbladder or a diaphragm of the hydraulic energy accumulator, and the energy accumulator interface is internally provided with a thimble which is propped against a valve core; the side wall of the device main body is provided with an interface connected with a pressure gauge, and the device main body is also provided with an ejector pin control mechanism for controlling the ejector pin to eject the valve core; the thimble control mechanism comprises a finger shaft with one end coaxially abutted against the thimble, the other end of the finger shaft is sleeved in a finger shaft sleeve, and the finger shaft sleeve is fully filled in a cavity at the right end of the device main body; an end cover nut is arranged on the outer side of the right end of the device main body, and a knob coaxial with the finger shaft is screwed in the center of the end cover nut.
Further, in the pressure measuring device for the hydraulic accumulator,: the energy storage interface comprises a second joint and an interface nut; the second joint is a pipe body with a flange at one end, the thimble penetrates through the middle of the pipe body, and the outer side of the other end of the thimble is provided with an external thread meshed with the internal thread at the left end of the device main body; the interface nut is buckled on the flange of the second joint and is provided with an internal thread meshed with the external thread on the corresponding solenoid on the energy accumulator.
Further, in the pressure measuring device for the hydraulic accumulator,: and sealing gaskets are also arranged between the second joint and the interface nut and between the finger shaft sleeve and the device main body.
Further, in the pressure measuring device for the hydraulic accumulator,: and a flange screwed by hand is also arranged on the knob.
Further, in the pressure measuring device for the hydraulic accumulator,: the finger shaft adopts a valve needle of a diesel engine oil nozzle matching part, and the finger shaft sleeve is a valve plug formed by cutting off the tail part of a valve body of the diesel engine oil nozzle matching part.
The invention aims to solve the problem that the finger shaft seal of the traditional oil liquid energy storage gas nitrogen charging device is easy to wear and lose efficacy, so that nitrogen charging cannot be carried out.
The invention will be explained in more detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a structural diagram of a hydraulic accumulator inflation and pressure measurement device of the present invention.
Fig. 2 is a using state diagram of the hydraulic accumulator inflation and pressure measurement device of the invention.
Detailed Description
The present embodiment is a hydraulic accumulator inflation and pressure measurement device, as shown in fig. 1, the hydraulic accumulator inflation device of the present embodiment includes a device main body 6, the device main body 6 has a cavity penetrating through the left and right ends, the left end of the device main body 6 is an accumulator interface tightly connected with the hydraulic accumulator to inflate the bladder or the diaphragm of the hydraulic accumulator, the accumulator interface is provided with an ejector pin 4 abutting against a valve core 17, a first connector 12 connected with a high pressure air source is arranged on the side wall of the device main body 6, and the device main body 6 is further provided with an ejector pin control mechanism for controlling the ejector pin 4 to eject the valve core 17; in this embodiment, the thimble control mechanism includes a finger shaft 7 having one end coaxially abutted against the thimble 4, the other end of the finger shaft 7 is sleeved in a finger shaft sleeve 8, and the finger shaft sleeve 8 is fully filled in a cavity at the right end of the device main body 6; a cap nut 9 is further provided on the outer side of the right end of the device body 6, and a knob 10 coaxial with the finger shaft 7 is further screwed into the center of the cap nut 9. In the present embodiment, "left" and "right" are relative, and here, are relative to the left and right shown in fig. 1. In this embodiment, when designing the knob 10, it is noted that the screw hole of the end cap nut 9 screwed into the knob 10 should be slightly smaller than the outer diameter of the finger shaft 7, so as to prevent the finger shaft 7 from flying out under the push of high-pressure gas to hurt people when the knob 10 is loosened. In addition, a hand-tightening flange is provided on the knob 10, so that the knob 10 can be tightened or loosened by bare hands.
In the embodiment, the two parts, namely the finger shaft 7 and the finger shaft sleeve 8, are more critical, and the traditional sealing ring 1 between the finger shaft and the finger shaft sleeve is easy to wear, lose efficacy and leak gas due to extremely high gas pressure and almost no lubricating property of the gas, so that a gas cannot be filled, wherein the gas mainly refers to nitrogen, and the equipment cannot be repaired and delivered for use on time.
In this embodiment, in order to improve the reliability and durability of the finger shaft 7 and the finger shaft sleeve 8, the finger shaft 7 and the finger shaft sleeve 8 are manufactured by machining and modifying a diesel engine fuel injection nozzle matching part. Because of the high-precision grinding fit between the plunger and the plunger hole of the fuel injection nozzle matching part, the fuel injection nozzle has excellent sealing performance (the working pressure which can be born by a common fuel injection nozzle exceeds 20 MPa), reliable performance and long service life, and has high temperature resistance, high strength and high wear resistance (the fuel injection nozzle of a diesel engine can continuously work for 2 ten thousand hours). The problems can be well solved, and the finger shaft sleeve which are originally wearing parts are changed into durable parts. The nitrogen charging device using the same as the finger axis is very reliable and durable.
In this embodiment, the finger shaft 7 is a valve needle of the diesel engine fuel injection nozzle matching part, and the finger shaft sleeve 8 is a valve plug formed by cutting off the tail of the valve body of the diesel engine fuel injection nozzle matching part. The specific machining method comprises the following steps: the valve needle of the oil nozzle matching part is drawn out of the valve body, the redundant part of the tail part of the valve body is cut off, the valve needle is inserted back into the valve body (the tip faces outwards) after being cleaned, and the parts, namely the finger shaft 7 and the finger shaft sleeve 8 are formed.
In this embodiment, the accumulator interface comprises a second joint 3 and an interface nut 2; the second joint 3 is a pipe body with a flange at one end, the thimble 4 penetrates through the middle of the pipe body, and the outer side of the other end is provided with an external thread meshed with the internal thread at the left end of the device main body 6; the second connector 3 is screwed into the device body 6 and the union nut 2 is snapped onto the flange of the second connector 3 and has an internal thread which engages with an external thread on a corresponding screw on the energy storage means.
In practice, it is also convenient to change the hydraulic accumulator inflation device into a pressure measurement device, only one pressure gauge 11 needs to be added on the device main body 6, and actually, the pressure gauge 11 and the first connector 12 connected with a high-pressure air source can be simultaneously installed to form the hydraulic accumulator inflation and pressure measurement device. As shown in fig. 1.
The device of this embodiment inflates steps and principles: reference is made to figure 2.
1. The knob 10 is unscrewed, and the thimble 4 and the finger shaft 6 move rightwards and retract under the action of the spring 5;
2. releasing the pressure of the energy accumulator (releasing all pressure oil of the hydraulic system to return to the oil tank);
3. the device is connected with an energy storage device to be filled with nitrogen gas: the interface nut 3 of the device and the interface thread of the energy accumulator are locked with each other;
4. connecting a high-pressure hose 13, a valve 14 and a high-pressure nitrogen cylinder 15; the hose 13 and the air inlet first joint 12 are sleeved with screw threads firstly and are not screwed tightly firstly;
5. opening the valve 14, blowing out the air originally reserved in the hose from the air inlet first joint 12 by the discharged nitrogen, and then closing the valve 14;
6. the knob 10 is screwed down slowly, the finger shaft 7 and the ejector pin 4 move left under the pushing of the knob 10, the valve core 17 of the energy accumulator 16 is pushed open, air remained in the device is blown out of the first connector 12 by residual nitrogen in the energy accumulator 16, the knob 10 is unscrewed, the ejector pin 4 returns, and the valve core 17 of the energy accumulator is closed;
7. interface nuts that tighten the hose 13 and the intake first connector 12;
8. the valve 14 is opened, the knob 10 is slowly screwed, the valve core 16 is opened, the air passage is communicated, and nitrogen from the high-pressure nitrogen bottle 15 sequentially passes through the valve 14, the hose 13, the air inlet first joint 12, and a gap between the inner cavity of the device main body 6 and the thimble 4 to enter an inner gallbladder of the energy accumulator.
9. After about one minute, the valve 14 is closed, and the pressure displayed by the pointer of the pressure gauge after the pointer of the pressure gauge is stabilized is the pressure of the nitrogen in the energy accumulator 17; if the pressure is not expected, valve 14 is opened again. If the pressure is too high, the joint of the hose 13 can be unscrewed to release the excessive nitrogen until the required pressure is reached;
10. after the expected pressure is reached, the knob 10 is unscrewed, the thimble 4 and the finger shaft 7 move to the right and return to the original position under the push of the spring 5 and the air pressure, and the valve core 16 of the energy accumulator is closed;
11. the device is dismantled and the inflation is completed.
Pressure measurement steps and principles:
1. the knob 10 is unscrewed, and the thimble 4 and the finger shaft 7 are retracted under the action of the spring 5; 2, relieving the pressure of the hydraulic system and the energy accumulator (releasing all pressure oil of the hydraulic system to an oil tank);
3. the device is connected with the energy storage device to be tested, namely, the connecting nut 2 of the device is locked with the interface thread of the energy storage device 16;
4. plugging the air inlet first connector 12 by using a plug;
5. the knob 10 is slowly screwed, the valve core 16 is opened, nitrogen in the energy accumulator overflows from the valve, and the pressure displayed by the pressure gauge 11 is the nitrogen pressure of the energy accumulator.
Claims (10)
1. A hydraulic energy accumulator inflating device comprises a device main body (6), wherein the device main body (6) is provided with a cavity penetrating through the left end and the right end, the left end of the device main body (6) is provided with an energy accumulator interface which is tightly connected with a hydraulic energy accumulator and inflates the inside of a gallbladder or a diaphragm of the hydraulic energy accumulator, and the energy accumulator interface is internally provided with a thimble (4) which is abutted against a valve core (17); a first joint (12) connected with a high-pressure air source is arranged on the side wall of the device main body (6), and an ejector pin control mechanism for controlling the ejector pin (4) to eject the valve core (17) is also arranged in the device main body (6); the method is characterized in that: the thimble control mechanism comprises a finger shaft (7) with one end coaxially abutted against the thimble (4), the other end of the finger shaft (7) is sleeved in a finger shaft sleeve (8), and the finger shaft sleeve (8) is fully filled in a cavity at the right end of the device main body (6); an end cover nut (9) is arranged on the outer side of the right end of the device main body (6), and a knob (10) coaxial with the finger shaft (7) is screwed in the center of the end cover nut (9).
2. The hydraulic accumulator charging apparatus of claim 1, wherein: the energy storage interface comprises a second connector (3) and an interface nut (2); the second joint (3) is a pipe body with a flange at one end, the thimble (4) penetrates through the middle of the pipe body, and the outer side of the other end is provided with an external thread meshed with the internal thread at the left end of the device main body (6); the interface nut (2) is buckled on a flange of the second joint (3) and is provided with an internal thread meshed with an external thread on a corresponding screw pipe on the energy accumulator.
3. The hydraulic accumulator charging apparatus of claim 2, wherein: sealing gaskets (1) are also arranged between the second joint (3) and the interface nut (2) and between the finger shaft sleeve (8) and the device main body (6).
4. The hydraulic accumulator charging apparatus of claim 1, wherein: and a flange screwed by hand is also arranged on the knob (10).
5. A hydraulic accumulator charging apparatus as claimed in claim 1 or 2 or 3 or 4 and characterised in that: the finger shaft (7) adopts a valve needle of a diesel engine oil nozzle matching part, and the finger shaft sleeve (8) adopts a valve plug formed by cutting off the tail part of a valve body of the diesel engine oil nozzle matching part.
6. A pressure measuring device of a hydraulic energy accumulator comprises a device main body (6), wherein the device main body (6) is provided with a cavity penetrating through the left end and the right end, the left end of the device main body (6) is provided with an energy accumulator interface which is tightly connected with the hydraulic energy accumulator and communicated with the inside of a gallbladder or a diaphragm of the hydraulic energy accumulator, and the energy accumulator interface is internally provided with a thimble (4) which is propped against a valve core (17); an interface connected with a pressure gauge (11) is arranged on the side wall of the device main body (6), and an ejector pin control mechanism for controlling the ejector pin (4) to eject the valve core (17) is also arranged in the device main body (6); the method is characterized in that: the thimble control mechanism comprises a finger shaft (7) with one end coaxially abutted against the thimble (4), the other end of the finger shaft (7) is sleeved in a finger shaft sleeve (8), and the finger shaft sleeve (8) is fully filled in a cavity at the right end of the device main body (6); an end cover nut (9) is arranged on the outer side of the right end of the device main body (6), and a knob (10) coaxial with the finger shaft (7) is screwed in the center of the end cover nut (9).
7. The hydraulic accumulator pressure measurement device according to claim 6, wherein: the energy storage interface comprises a second connector (3) and an interface nut (2); the second joint (3) is a pipe body with a flange at one end, the thimble (4) penetrates through the middle of the pipe body, and the outer side of the other end is provided with an external thread meshed with the internal thread at the left end of the device main body (6); the interface nut (2) is buckled on a flange of the second joint (3) and is provided with an internal thread meshed with an external thread on a corresponding screw pipe on the energy accumulator.
8. The hydraulic accumulator pressure measurement device according to claim 7, wherein: sealing gaskets (1) are also arranged between the second joint (3) and the interface nut (2) and between the finger shaft sleeve (8) and the device main body (6).
9. The hydraulic accumulator pressure measurement device according to claim 6, wherein: and a flange screwed by hand is also arranged on the knob (10).
10. A hydraulic accumulator charging apparatus as claimed in claim 6 or 7 or 8 or 9 and characterised in that: the finger shaft (7) adopts a valve needle of a diesel engine oil nozzle matching part, and the finger shaft sleeve (8) adopts a valve plug formed by cutting off the tail part of a valve body of the diesel engine oil nozzle matching part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020452450.5U CN212868047U (en) | 2020-04-01 | 2020-04-01 | Hydraulic accumulator inflating and pressure measuring device |
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| CN202020452450.5U CN212868047U (en) | 2020-04-01 | 2020-04-01 | Hydraulic accumulator inflating and pressure measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336140A (en) * | 2020-04-01 | 2020-06-26 | 盐田国际集装箱码头有限公司 | Hydraulic accumulator inflating and pressure measuring device |
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2020
- 2020-04-01 CN CN202020452450.5U patent/CN212868047U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336140A (en) * | 2020-04-01 | 2020-06-26 | 盐田国际集装箱码头有限公司 | Hydraulic accumulator inflating and pressure measuring device |
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