CN114368723A - Quantitative oil filling method for base diaphragm capsule - Google Patents
Quantitative oil filling method for base diaphragm capsule Download PDFInfo
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- CN114368723A CN114368723A CN202111327676.8A CN202111327676A CN114368723A CN 114368723 A CN114368723 A CN 114368723A CN 202111327676 A CN202111327676 A CN 202111327676A CN 114368723 A CN114368723 A CN 114368723A
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- oil filling
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002775 capsule Substances 0.000 title claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 53
- 238000009434 installation Methods 0.000 claims abstract description 12
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims description 62
- 238000007789 sealing Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 2
- 229920002545 silicone oil Polymers 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/36—Arrangements of flow- or pressure-control valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/58—Arrangements of pumps
- B67D7/62—Arrangements of pumps power operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/78—Arrangements of storage tanks, reservoirs or pipe-lines
Abstract
The invention discloses a quantitative oil filling method for a base diaphragm capsule, which comprises the following steps: a. preparing for installation; b. vacuumizing: vacuumizing the internal pipeline of the transmitter base to below 1Pa by using a vacuum pump and maintaining for more than 2 hours; c. pre-filling oil: closing the vacuum pump, opening an oil filling valve below the oil tank, and filling oil filled in the oil tank into the internal pipeline and the oil filling pipeline of the transmitter base under the action of gravity; d. accurately filling oil: closing the oil filling valve, pushing an oil cylinder on an oil filling pipeline, extruding filling oil into a transmitter base under the action of pressure, so that a base diaphragm slowly swells, stopping the oil cylinder when the displacement reaches a set value, and keeping the base diaphragm at the optimal displacement at the moment, wherein the linearity of the base diaphragm at the position is the best; e. and taking out the base. The invention provides a quantitative oil filling method for a base diaphragm, which utilizes a displacement sensor to accurately control the bulging displacement of the base diaphragm and realizes the quantitative control of oil filled in a transmitter base.
Description
Technical Field
The invention relates to the technical field of base diaphragm capsule oil filling, in particular to a quantitative base diaphragm capsule oil filling method.
Background
In the field of pressure transmitters, filling oil (such as silicone oil, fluorine oil, etc.) is generally used for pressure conduction to conduct the pressure of an object to be measured to a pressure core, so that the filling oil must be in a closed environment. In the field of pressure transmitters, the enclosed space consists of a diaphragm, a base, a capillary tube, etc. Due to the fact that the filling oil expands with heat and contracts with cold under the influence of the external environment temperature, uncertain internal pressure exists in the closed space, and the measurement accuracy and the stability of the pressure transmitter can be affected. Therefore, the internal stress can be effectively estimated only by quantitatively filling oil into the closed space, so as to improve the batch consistency and the product stability. Because the length of the capillary tube has various specifications, the essence of controlling the oil filling amount is to control the oil filling amount in the base membrane box under the condition of the same specification, and the oil filling amount has small volume which is about 1000mm3Therefore, how to quantitatively control the oil filling amount becomes a difficult problem. Currently, the main quantitative oil filling scheme is mainly controlled by a quantitative pump, and the high-precision quantitative pump of the scheme has extremely high cost. There are other schemes to control the volume of oil filling by extruding a fine oil filling pipe of fixed length, but the precision of the scheme is poor. The invention provides a quantitative oil filling method for a base diaphragm capsule, aiming at the problem in the oil filling of a transmitter. The method is achieved byThe displacement sensor monitors the displacement of the base diaphragm in real time, and the actual oil filling amount in the diaphragm box is controlled by controlling the displacement of the diaphragm swelling.
Chinese patent application publication No. CN206705662U, published as 2017, 12 and 05, entitled "an automatic quantitative oil filling machine", discloses an oil processing equipment field, is used for oil filling, specifically provides an automatic quantitative oil filling machine, includes the frame and locates the batch oil tank of frame top, its characterized in that: the machine frame is provided with a first conveying mechanism, an oil filling device, a second conveying mechanism and an electronic automatic control system, the roller conveyor is also provided with a positioning oil guide barrel device, a quantifying device and a temperature sensor are arranged in the oil storage tank, and the oil filling device is connected with the quantifying device through an oil guide pipe; the first transmission mechanism, the oil filling device and the positioning oil guide barrel device are all connected with an electronic automatic control system. The oil filling device comprises a mounting bracket, an oil guide pipe and two or more filling nozzles; the quantifying device comprises a driving device, a push rod, a frame, a rocker arm and a quantifying cup, the quantifying cup is controlled by the driving device to reciprocate up and down in the oil storage tank, the quantifying cup comprises a cup body, a partition plate and the cup body form a cavity at the bottom, a cylinder is driven at the back of the partition plate, and the partition plate is driven to move up and down to change the volume. Although this scheme can realize filling the regulation of oil mass through the position of adjusting quantitative cup, the precision is relatively poor. And the pipeline inner wall has the oil mass loss in the changer oil filling, discharges out a lot of oil in the oil tank, can not all reach changer inner space.
Disclosure of Invention
The invention provides a quantitative oil filling method for a base diaphragm box, aiming at overcoming the problem of inaccurate oil filling amount control in the base diaphragm box in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quantitative oil filling method for a base diaphragm capsule comprises the following steps:
a. installation preparation: mounting the assembled transmitter base on a mounting tool, wherein the mounting tool is provided with a displacement sensor capable of detecting the displacement of a base diaphragm at a position corresponding to the base diaphragm of a base body on the transmitter base;
b. vacuumizing: vacuumizing the internal pipeline of the transmitter base to below 1Pa by using a vacuum pump and maintaining for more than 2 hours;
c. pre-filling oil: closing the vacuum pump, opening an oil filling valve below the oil tank, and filling oil filled in the oil tank into the internal pipeline and the oil filling pipeline of the transmitter base under the action of gravity;
d. accurately filling oil: closing the oil filling valve, pushing an oil cylinder on an oil filling pipeline, extruding filling oil into a transmitter base under the action of pressure, and slowly bulging a base diaphragm;
e. taking out the base: and sealing the oil sealing port on the transmitter base and detaching the transmitter base.
In the above technical solution, the filling oil includes but is not limited to silicone oil, high temperature silicone oil and fluorine oil, and the transmitter base is provided with an oil sealing port. The displacement sensor in the method can detect the displacement of the base diaphragm, and the displacement of the bulging of the base diaphragm is accurately controlled by using the displacement sensor, so that the quantitative control of the oil filled in the transmitter base can be realized.
Preferably, a reverse pumping pipe is further arranged on one side, provided with the displacement sensor, of the installation tool, the reverse pumping pipe is connected with a reverse pumping valve and a reverse pumping pump, and when the vacuum pumping in the step b is performed, the reverse pumping pump and the reverse pumping valve are simultaneously opened, so that the reverse pumping pipe performs vacuum pumping on the space outside the diaphragm, the inner side and the outer side of the diaphragm are in a vacuum state, and the diaphragm is not tightly attached to the base body under the action of internal stress; before the oil is pre-filled in the step c, the reverse pumping valve is closed, so that the air pressure of the space outside the diaphragm is larger than the air pressure of the inner side of the base diaphragm, the base diaphragm is tightly attached to the base body, and then the vacuum valve is closed.
In the technical scheme, the displacement sensor is reset to zero after the base diaphragm is tightly attached to the base body. The space outside the diaphragm can be also vacuumized through the reverse pump, the pressure applied to the base diaphragm in the vacuumizing process is reduced, air between the base diaphragm and the base body can be fully discharged, and the influence of the internal air on the precision of the oil filling quantity is reduced.
Preferably, a reverse pumping pipe is further arranged on one side, provided with the displacement sensor, of the installation tool, the reverse pumping pipe is connected with a reverse pumping valve and a reverse pumping pump, when the vacuum pumping in the step b is performed, the reverse pumping valve and the reverse pumping valve are firstly opened, so that the reverse pumping pipe performs vacuum pumping on the space outside the diaphragm, and then the vacuum pump is opened, so that the air pressure of the space outside the diaphragm is always lower than the air pressure of the inner side of the base diaphragm; before pre-filling oil in the step c, the back-pumping valve is closed, so that the air pressure in the space outside the diaphragm is larger than the air pressure in the inner side of the base diaphragm, and the vacuum pump is closed after the base diaphragm is tightly attached to the base body.
In the technical scheme, the displacement sensor is reset to zero after the base diaphragm is tightly attached to the base body. The space outside the diaphragm can be also vacuumized through the reverse pump, when the step b is vacuumized, the reverse pump and the reverse valve are firstly opened, the reverse pump pipe is enabled to vacuumize the space outside the diaphragm, then the vacuum pump is opened, the air pressure in the space outside the diaphragm is always lower than the air pressure in the inner side of the base diaphragm, the base diaphragm can be always kept away from the base body, (if the base diaphragm is always tightly attached to the base body, some bubbles can be generated between the base diaphragm and the base body at the beginning, because the base diaphragm is always tightly attached to the base body, the air in the bubbles can not be sucked away, therefore, the exhaust is incomplete, the oil filling amount precision is influenced), the air between the base diaphragm and the base body can be fully discharged, and the influence of the internal air on the oil filling amount precision is reduced.
Preferably, the mounting tool comprises a main support shaft, a displacement sensor, a base mounting disc, a base, a corner cylinder, a cylinder chuck and a reverse pumping pipe; the base mounting disc is connected with the main support shaft, the base is detachably connected with the base mounting disc, the corner cylinder is fixed with the base mounting disc, the cylinder chuck is fixed with a rotating arm of the corner cylinder, the base and the cylinder chuck clamp the transmitter base, the displacement sensor is fixed with the base mounting disc, and one end of the displacement sensor penetrates through the base and is close to a base diaphragm on the clamp transmitter base.
The installation frock can install the changer base, and the corner cylinder both can drive the cylinder chuck rotatory, can make the cylinder chuck translation a distance again (like the ACK cylinder). When the device is used, the transmitter base is placed on the base, the corner cylinder drives the cylinder chuck to rotate to the outer side of the transmitter base, and the cylinder chuck is enabled to tightly press the transmitter base. The base and the base mounting plate are detachably connected, so that different base bases and different transmitter bases matched with each other can be replaced as required.
Preferably, a sealed diaphragm outer side space is enclosed among the base mounting disc, the base and a base diaphragm on the clamping transmitter base, one end of the reverse pumping pipe is communicated with the diaphragm outer side space, and the other end of the reverse pumping pipe is communicated with the reverse pumping pump.
The structure can also carry out the evacuation to diaphragm outside space, makes the air between base diaphragm and the base body fully discharge, reduces the influence of inside air to the volume precision of irritating oil.
Preferably, the displacement sensor is aligned with the center of a base diaphragm on the transmitter base, a communication gap is formed between the displacement sensor and the base, and the reverse pumping pipe is communicated with the space outside the diaphragm through the communication gap. The displacement sensor is aligned with the center position of the base diaphragm on the transmitter base tightly, so that the displacement sensor can detect more accurately.
Preferably, the base mounting plate is rotatably connected with the main support shaft through a bearing structure. The base mounting disc adopts the rotary design, and the accessible is rotatory to be made the hydraulic fluid port that seals on the changer base body up all the time.
Preferably, the base and the base mounting plate are detachably connected through a threaded structure.
Preferably, the oil filling device further comprises an oil filling pipeline system, wherein the oil filling pipeline system comprises a vacuum pump, a vacuum valve, a pre-pumping valve, an oil tank, an oil filling valve and an oil cylinder, one end of the vacuum valve is communicated with the vacuum pump, the other end of the vacuum pump is respectively communicated with one end of the pre-pumping valve and one end of the oil tank through a three-way pipe, the other end of the pre-pumping valve is communicated with an oil filling interface, the other end of the oil tank is communicated with the oil filling valve, the other end of the oil filling valve is respectively communicated with one end of the oil filling interface and one end of the oil cylinder through a three-way pipe, and an oil sealing port on a transmitter base of the oil filling interface is communicated with the oil sealing port.
The invention has the beneficial effects that: (1) the displacement sensor is utilized to accurately control the bulging displacement of the base diaphragm, so that the quantitative control of oil filled in the transmitter base can be realized; (2) the space outside the diaphragm can be also vacuumized through the reverse pump, so that the space inside and outside the base diaphragm is in a vacuum state, the base diaphragm can be always kept away from the transmitter base body due to internal stress, air between the base diaphragm and the transmitter base body can be fully exhausted, and the influence of the internal air on the precision of the oil filling quantity is reduced; (3) the space outside the diaphragm can be also vacuumized through the reverse pump, so that the air pressure in the space outside the base diaphragm is always lower than the air pressure in the space inside the base diaphragm, the base diaphragm can be always kept away from the transmitter base body, the air between the base diaphragm and the transmitter base body can be fully discharged, and the influence of the internal air on the oil filling quantity precision is reduced; (4) the base and the base mounting plate are detachably connected, so that different base bases and different transmitter bases matched with each other can be replaced as required.
Drawings
FIG. 1 is a schematic structural view of an installation tool of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural view of an oil filling pipeline system in the invention.
In the figure: the device comprises an installation tool 1, a main support shaft 1.1, a displacement sensor 1.2, a base installation disc 1.3, a base 1.4, a corner cylinder 1.5, a cylinder chuck 1.6, a reverse pumping pipe 1.7, a transmitter base 2, a base body 2.1, a base diaphragm 2.2, a diaphragm outer side space 2.3, an oil filling pipeline system 3, a vacuum pump 3.1, a vacuum valve 3.2, a pre-pumping valve 3.3, an oil tank 3.4, an oil filling valve 3.5, an oil cylinder 3.6 and an oil filling connector 3.7.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1, 2 and 3, a quantitative oil filling method for a base bellows comprises the following steps:
a. installation preparation: the assembled transmitter base 2 is installed on an installation tool 1, and a displacement sensor 1.2 capable of detecting the displacement of a base diaphragm 2.2 is arranged on the installation tool 1 at a position corresponding to the base diaphragm 2.2 of a base body 2.1 on the transmitter base 2;
b. vacuumizing: firstly, opening a reverse pumping valve and a reverse pumping valve to ensure that a reverse pumping pipe 1.7 vacuumizes a space 2.3 outside a diaphragm, then utilizing a vacuum pump 3.1 to vacuumize a pipeline inside a transmitter base 2 to below 1Pa and maintain for more than 2 hours, and ensuring that the air pressure of the space 2.3 outside the diaphragm is always lower than the air pressure inside the diaphragm 2.2 of the base;
c. pre-filling oil: firstly, closing the reverse pumping valve to ensure that the air pressure of the space 2.3 outside the diaphragm is larger than the air pressure of the inner side of the base diaphragm 2.2, tightly attaching the base diaphragm 2.2 to the base body 2.1, then closing the vacuum pump 3.1, opening the oil filling valve 3.5 below the oil tank 3.4, and filling the filling oil in the oil tank 3.4 into the internal pipeline and the oil filling pipeline of the transmitter base 2 under the action of gravity;
d. accurately filling oil: closing the oil filling valve 3.5, pushing an oil cylinder 3.6 on an oil filling pipeline, extruding filling oil into the transmitter base 2 under the action of pressure, and slowly bulging the base diaphragm 2.2, wherein the displacement sensor 1.2 always records the bulging displacement of the base diaphragm 2.2, when the displacement reaches a set value, the oil cylinder 3.6 stops moving, the base diaphragm 2.2 is in the optimal displacement, and the linearity of the base diaphragm 2.2 is the best at the position;
e. taking out the base: and detaching the transmitter base 2, and sealing the oil sealing port on the transmitter base 2.
In the above technical solution, the filling oil includes but is not limited to silicone oil, high temperature silicone oil and fluorine oil, and the transmitter base 2 is provided with an oil sealing port. The displacement sensor 1.2 in the method can detect the displacement of the base diaphragm 2.2, and the displacement of the bulging of the base diaphragm 2.2 is accurately controlled by using the displacement sensor 1.2, so that the quantitative control of the oil filled in the transmitter base 2 can be realized. The diaphragm outer side space 2.3 can be also vacuumized through the back-suction pump, when the step b is vacuumized, the back-suction valve and the back-suction valve are firstly opened, the back-suction pipe 1.7 is enabled to vacuumize the diaphragm outer side space 2.3, then the vacuum pump 3.1 is opened, the air pressure of the diaphragm outer side space 2.3 is enabled to be always lower than the air pressure of the base diaphragm 2.2, the base diaphragm 2.2 can be always kept away from the base body 2.1, (if the base diaphragm 2.2 is always tightly attached to the base body 2.1, some air bubbles can be generated between the base diaphragm 2.2 and the base body 2.1 at the beginning, because the base diaphragm 2.2 is always tightly attached to the base body 2.1, the air in the air bubbles can not be sucked away, the air exhausting caused by incomplete air pumping affects the oil filling amount precision), the air between the base diaphragm 2.2 and the base body 2.1 can be fully exhausted, and the influence of the oil filling amount precision by the internal air is reduced.
Example 2:
as shown in fig. 1 and fig. 2, on the basis of embodiment 1, the mounting tool 1 includes a main support shaft 1.1, a displacement sensor 1.2, a base mounting plate 1.3, a base 1.4, an angle cylinder 1.5, a cylinder chuck 1.6 and a back suction pipe 1.7; base mounting disc 1.3 is connected through bearing structure rotation with main tributary supporting shaft 1.1, base 1.4 and base mounting disc 1.3 pass through helicitic texture releasable connection, it is sealed through O type sealing washer between base 1.4 and the base mounting disc 1.3, be equipped with the seal groove on the base 1.4, it is sealed with O type sealing washer between base 1.4 and base body 2.1, corner cylinder 1.5 is fixed with base mounting disc 1.3, cylinder chuck 1.6 is fixed with the rotor arm of corner cylinder 1.5, base 1.4 and cylinder chuck 1.6 press from both sides tight transmitter base 2, displacement sensor 1.2 is fixed with base mounting disc 1.3, displacement sensor 1.2's one end passes base 1.4 and is close to pressing from both sides tight base diaphragm 2.2 on the transmitter base 2. A sealed diaphragm outer side space 2.3 is enclosed among the base mounting disc 1.3, the base 1.4 and a base diaphragm 2.2 on the clamping transmitter base 2, one end of the reverse pumping pipe 1.7 is communicated with the diaphragm outer side space 2.3, and the other end of the reverse pumping pipe 1.7 is communicated with the reverse pumping pump. Displacement sensor 1.2 aims at the central point that tight base diaphragm 2.2 on the changer base 2 puts, is equipped with the intercommunication clearance between displacement sensor 1.2 and the base 1.4, and the back suction pipe 1.7 is through intercommunication clearance and diaphragm outside space 2.3 intercommunication. A conical groove is arranged on one side of the base seat 1.4 close to the base body 2.1, so that the base diaphragm 2.2 has a moving space,
during the use, place changer base 2 on base 1.4, corner cylinder 1.5 drives cylinder chuck 1.6 and rotates to changer base 2 outside to make cylinder chuck 1.6 compress tightly changer base 2 can. Base 1.4 and base mounting disc 1.3 releasable connection can change different base 1.4 as required, the different changer base 2 of adaptation.
Example 3:
as shown in fig. 3, on the basis of embodiment 1, the system further includes an oil filling pipeline system 3, the oil filling pipeline system 3 includes a vacuum pump 3.1, a vacuum valve 3.2, a pre-pumping valve 3.3, an oil tank 3.4, an oil filling valve 3.5 and an oil cylinder 3.6, one end of the vacuum valve 3.2 is communicated with the vacuum pump 3.1, the other end of the vacuum pump 3.1 is respectively communicated with one end of the pre-pumping valve 3.3 and one end of the oil tank 3.4 through a three-way pipe, the other end of the pre-pumping valve 3.3 is communicated with an oil filling port 3.7, the other end of the oil tank 3.4 is communicated with the oil filling valve 3.5, the other end of the oil filling valve 3.5 is respectively communicated with one end of the oil filling port 3.7 and one end of the oil cylinder 3.6 through a three-way pipe, and the oil sealing port on the oil filling port 3.7 transmitter base 2 is communicated.
The invention has the beneficial effects that: (1) the displacement sensor 1.2 is used for accurately controlling the bulging displacement of the base diaphragm 2.2, so that quantitative control of oil filled in the transmitter base 2 can be realized; (2) the space outside the diaphragm can be also vacuumized through the reverse pump, so that the space inside and outside the base diaphragm is in a vacuum state, the base diaphragm can be always kept away from the transmitter base body due to internal stress, air between the base diaphragm and the transmitter base body can be fully exhausted, and the influence of the internal air on the precision of the oil filling quantity is reduced; (3) the space 2.3 outside the diaphragm can be also vacuumized through the reverse pump, so that the air pressure in the space outside the base diaphragm 2.2 is always lower than the air pressure in the space inside the base diaphragm 2.2, the base diaphragm 2.2 can be always kept away from the transmitter base 2 body, the air between the base diaphragm 2.2 and the transmitter base 2 body can be fully exhausted, and the influence of the internal air on the precision of the oil filling amount is reduced; (4) base 1.4 and base mounting disc 1.3 releasable connection can change different base 1.4 as required, the different changer base 2 of adaptation.
Claims (9)
1. A quantitative oil filling method for a base diaphragm capsule is characterized by comprising the following steps:
a. installation preparation: mounting the assembled transmitter base on a mounting tool, wherein the mounting tool is provided with a displacement sensor capable of detecting the displacement of a base diaphragm at a position corresponding to the base diaphragm of a base body on the transmitter base;
b. vacuumizing: vacuumizing the internal pipeline of the transmitter base to below 1Pa by using a vacuum pump and maintaining for more than 2 hours;
c. pre-filling oil: closing the vacuum pump, opening an oil filling valve below the oil tank, and filling oil filled in the oil tank into the internal pipeline and the oil filling pipeline of the transmitter base under the action of gravity;
d. accurately filling oil: closing the oil filling valve, pushing an oil cylinder on an oil filling pipeline, extruding filling oil into a transmitter base under the action of pressure, and slowly bulging a base diaphragm;
e. taking out the base: and sealing the oil sealing port on the transmitter base and detaching the transmitter base.
2. The quantitative oil filling method for the base bellows according to claim 1, wherein a reverse pumping pipe is further arranged on one side of the mounting tool, which is provided with the displacement sensor, and is connected with a reverse pumping valve and a reverse pumping pump, and when the vacuum pumping in the step b is performed, the reverse pumping pump and the reverse pumping valve are simultaneously opened, so that the reverse pumping pipe performs vacuum pumping on the space outside the diaphragm, the inner side and the outer side of the diaphragm are both in a vacuum state, and the diaphragm is not attached to the base body under the action of internal stress; before the oil is pre-filled in the step c, the reverse pumping valve is closed, so that the air pressure of the space outside the diaphragm is larger than the air pressure of the inner side of the base diaphragm, the base diaphragm is tightly attached to the base body, and then the vacuum valve is closed.
3. The quantitative oil filling method for the base bellows according to claim 1, wherein a reverse pumping pipe is further arranged on one side of the mounting tool, which is provided with the displacement sensor, and is connected with a reverse pumping valve and a reverse pumping pump, when the vacuum pumping in the step b is performed, the reverse pumping valve and the reverse pumping valve are firstly opened to ensure that the reverse pumping pipe performs vacuum pumping on the space outside the diaphragm, and then the vacuum pump is opened to ensure that the air pressure in the space outside the diaphragm is always lower than the air pressure in the inner side of the base diaphragm; before pre-filling oil in the step c, the back-pumping valve is closed, so that the air pressure in the space outside the diaphragm is larger than the air pressure in the inner side of the base diaphragm, and the vacuum pump is closed after the base diaphragm is tightly attached to the base body.
4. The quantitative oil filling method for the base bellows according to claim 1, 2 or 3, wherein the mounting tool comprises a main support shaft, a displacement sensor, a base mounting plate, a base, an angle cylinder, a cylinder chuck and a back suction pipe; the base mounting disc is connected with the main support shaft, the base is detachably connected with the base mounting disc, the corner cylinder is fixed with the base mounting disc, the cylinder chuck is fixed with a rotating arm of the corner cylinder, the base and the cylinder chuck clamp the transmitter base, the displacement sensor is fixed with the base mounting disc, and one end of the displacement sensor penetrates through the base and is close to a base diaphragm on the clamp transmitter base.
5. The quantitative oil filling method for the base bellows as claimed in claim 4, wherein a sealed diaphragm outer space is defined between the base mounting plate, the base and the base diaphragm on the clamping transmitter base, one end of the back suction pipe is communicated with the diaphragm outer space, and the other end of the back suction pipe is communicated with the back suction pump.
6. The method as claimed in claim 5, wherein the displacement sensor is aligned with the center of the base diaphragm on the base of the transmitter, a communication gap is provided between the displacement sensor and the base of the base, and the back suction pipe is communicated with the space outside the diaphragm through the communication gap.
7. The method as claimed in claim 4, wherein the base-mounting plate is rotatably connected to the main support shaft by a bearing structure.
8. The method as claimed in claim 4, wherein the base and the base mounting plate are detachably connected by a screw structure.
9. The quantitative oil filling method for the pedestal bellows according to claim 1, 2 or 3, further comprising an oil filling pipeline system, wherein the oil filling pipeline system comprises a vacuum pump, a vacuum valve, a pre-pumping valve, an oil tank, an oil filling valve and an oil cylinder, one end of the vacuum valve is communicated with the vacuum pump, the other end of the vacuum pump is respectively communicated with one end of the pre-pumping valve and one end of the oil tank through a three-way pipe, the other end of the pre-pumping valve is communicated with the oil filling port, the other end of the oil tank is communicated with the oil filling valve, the other end of the oil filling valve is respectively communicated with the oil filling port and one end of the oil cylinder through a three-way pipe, and the oil sealing port on the pedestal of the oil filling port transmitter is communicated with the oil sealing port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327676.8A CN114368723B (en) | 2021-11-10 | 2021-11-10 | Quantitative oil filling method for base diaphragm capsule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327676.8A CN114368723B (en) | 2021-11-10 | 2021-11-10 | Quantitative oil filling method for base diaphragm capsule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114368723A true CN114368723A (en) | 2022-04-19 |
| CN114368723B CN114368723B (en) | 2023-12-22 |
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| CN202111327676.8A Active CN114368723B (en) | 2021-11-10 | 2021-11-10 | Quantitative oil filling method for base diaphragm capsule |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6450369B1 (en) * | 1999-05-08 | 2002-09-17 | Imi Cornelius Inc. | Beverage dispenser |
| JP2005331385A (en) * | 2004-05-20 | 2005-12-02 | Yokogawa Electric Corp | Pressure transmitting apparatus and method of enclosing oil for transmitting pressure |
| CN201203805Y (en) * | 2008-05-16 | 2009-03-04 | 中国石油兰州石油化工公司 | Dosing device for measuring bellows pressure transmitting medium pouring amount using flange intelligent transmitter |
| CN203602350U (en) * | 2013-11-25 | 2014-05-21 | 浙江春晖智能控制股份有限公司 | Pressure-driven vacuum gun jumping mechanism |
| CN204417102U (en) * | 2014-12-10 | 2015-06-24 | 重庆四联测控技术有限公司 | Can the device for filling oil of the accurate oil-filled amount of control presssure sensor |
| CN105036049A (en) * | 2015-08-03 | 2015-11-11 | 江西洪都航空工业集团有限责任公司 | Vacuumizing oil injection device |
| CN105097202A (en) * | 2013-11-15 | 2015-11-25 | 国网山东省电力公司青岛供电公司 | Transformer vacuum oil filling and detecting system adopting vacuum pump to vacuumize |
| CN211208195U (en) * | 2020-02-28 | 2020-08-07 | 三变科技股份有限公司 | Vacuum quantitative oil injection system for transformer |
| CN212951190U (en) * | 2020-08-24 | 2021-04-13 | 中航飞机起落架有限责任公司 | Quantitative oil injection/oil discharge device for static test of undercarriage |
| CN214121486U (en) * | 2021-01-20 | 2021-09-03 | 深圳市特安电子有限公司 | Remote transmission differential pressure transmitter |
-
2021
- 2021-11-10 CN CN202111327676.8A patent/CN114368723B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6450369B1 (en) * | 1999-05-08 | 2002-09-17 | Imi Cornelius Inc. | Beverage dispenser |
| JP2005331385A (en) * | 2004-05-20 | 2005-12-02 | Yokogawa Electric Corp | Pressure transmitting apparatus and method of enclosing oil for transmitting pressure |
| CN201203805Y (en) * | 2008-05-16 | 2009-03-04 | 中国石油兰州石油化工公司 | Dosing device for measuring bellows pressure transmitting medium pouring amount using flange intelligent transmitter |
| CN105097202A (en) * | 2013-11-15 | 2015-11-25 | 国网山东省电力公司青岛供电公司 | Transformer vacuum oil filling and detecting system adopting vacuum pump to vacuumize |
| CN203602350U (en) * | 2013-11-25 | 2014-05-21 | 浙江春晖智能控制股份有限公司 | Pressure-driven vacuum gun jumping mechanism |
| CN204417102U (en) * | 2014-12-10 | 2015-06-24 | 重庆四联测控技术有限公司 | Can the device for filling oil of the accurate oil-filled amount of control presssure sensor |
| CN105036049A (en) * | 2015-08-03 | 2015-11-11 | 江西洪都航空工业集团有限责任公司 | Vacuumizing oil injection device |
| CN211208195U (en) * | 2020-02-28 | 2020-08-07 | 三变科技股份有限公司 | Vacuum quantitative oil injection system for transformer |
| CN212951190U (en) * | 2020-08-24 | 2021-04-13 | 中航飞机起落架有限责任公司 | Quantitative oil injection/oil discharge device for static test of undercarriage |
| CN214121486U (en) * | 2021-01-20 | 2021-09-03 | 深圳市特安电子有限公司 | Remote transmission differential pressure transmitter |
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| CN114368723B (en) | 2023-12-22 |
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Address after: 310051 No. 309, Liuhe Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Zhongkong Technology Co.,Ltd. Country or region after: China Patentee after: Zhejiang central control sensor technology Co.,Ltd. Address before: 310051 No. 309, Liuhe Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG SUPCON TECHNOLOGY Co.,Ltd. Country or region before: China Patentee before: Zhejiang central control sensor technology Co.,Ltd. |