CN114635687A - Differential pressure transmitter with high sealing performance for oil field - Google Patents
Differential pressure transmitter with high sealing performance for oil field Download PDFInfo
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- CN114635687A CN114635687A CN202210536454.5A CN202210536454A CN114635687A CN 114635687 A CN114635687 A CN 114635687A CN 202210536454 A CN202210536454 A CN 202210536454A CN 114635687 A CN114635687 A CN 114635687A
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- 238000007789 sealing Methods 0.000 title claims abstract description 90
- 230000007246 mechanism Effects 0.000 claims abstract description 101
- 238000004140 cleaning Methods 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 41
- 230000000903 blocking effect Effects 0.000 claims description 28
- 239000012535 impurity Substances 0.000 claims description 13
- 238000009530 blood pressure measurement Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 239000003208 petroleum Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 21
- 238000002955 isolation Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the field of oil pipe pressure measuring equipment, in particular to a differential pressure transmitter with high sealing performance for an oil field. The technical problem to be solved is as follows: the differential pressure transmitter can not measure the pressure difference at multiple positions, and when the differential pressure transmitter is used for measuring the pressure difference at multiple positions of oil in an oil pipe, joints need to be frequently replaced, and the sealing effect at the joints is poor easily. A differential pressure transmitter with high sealing performance for oil field comprises a pressure measuring shell; the pressure measuring shell is provided with two front and back, the two pressure measuring shells are respectively provided with a fixing mechanism, the two pressure measuring shells are respectively provided with a sealing assembly, the right sides of the two sealing assemblies are respectively provided with a switching mechanism, and the two pressure measuring shells are respectively internally provided with a cleaning assembly. According to the invention, the pressure measuring pipe is better fixed through the fixing mechanism, the effect of switching the pressures in different pressure measuring pipes is realized through the switching mechanism, the better sealing effect is realized through the sealing assembly, and the effect of prolonging the service life of the isolation diaphragm is realized through the cleaning assembly.
Description
Technical Field
The invention relates to the field of oil pipe pressure measuring equipment, in particular to a differential pressure transmitter with high sealing performance for an oil field.
Background
In the process of oil exploitation, differential pressure measurement needs to be carried out on the pressure at two positions in an oil pipe so as to record and analyze oil pipe pressure data, at present, equipment for measuring the differential pressure in the oil pipe is a differential pressure transmitter, a pipeline at two positions of the oil pipe is communicated with a high-pressure pipe and a low-pressure pipe of the differential pressure transmitter, and then the differential pressure at the two positions is measured.
Most of current differential pressure transmitter can only be measured to the pressure differential of two places, can't measure the pressure differential of many places, and when carrying out the differential pressure test to oil pipe oil many places, need frequent change to connect, and change many times and cause the sealed effect of joint department to be poor easily, current differential pressure transmitter does not possess the clearance function, differential pressure transmitter accomplishes the back to oil pressure measurement, oil and impurity have the part to persist in differential pressure transmitter, cause the damage to the isolation diaphragm in the differential pressure transmitter.
In order to solve the technical problem, a differential pressure transmitter with high sealing performance for oil fields is provided, wherein the differential pressure transmitter is tested at multiple places.
Disclosure of Invention
In order to overcome the defects that the differential pressure transmitter cannot measure the pressure difference at multiple positions, and the joint needs to be frequently replaced when the differential pressure transmitter is used for testing the pressure difference at multiple positions of petroleum in an oil pipe, and the sealing effect at the joint is poor due to repeated replacement, the differential pressure transmitter with high sealing performance for the oil field is provided.
A differential pressure transmitter with high sealing performance for oil fields comprises a support frame, a data processor is fixedly connected to the upper portion of the support frame, two pressure measuring shells are symmetrically arranged in the front and back, the two pressure measuring shells are communicated with the data processor through pipelines, three connecting pipes are one group, two groups are symmetrically arranged in the front and back, three connecting pipes in each group are respectively communicated with and fixedly connected with adjacent pressure measuring shells, fixing mechanisms for fixing pressure measuring pipes are respectively arranged on the two pressure measuring shells, two parallel and level mechanisms are respectively arranged on each connecting pipe, the fixing mechanisms are matched with the parallel and level mechanisms to enable the pressure measuring pipes on the fixing mechanisms to be parallel and level, switching mechanisms for switching pressures of different pressure measuring pipes are respectively arranged on the two pressure measuring shells, the right ends of the fixed pressure measuring pipes are sealed through the matching of the switching mechanisms with the fixing mechanisms, and sealing assemblies for sealing the pressure measuring pipes are respectively arranged on the two pressure measuring shells, and the sealing assembly is matched with the fixing mechanism to carry out secondary sealing on the pressure measuring pipe after the switching mechanism is sealed.
Preferably, the fixing mechanism comprises an L-shaped support rod fixedly connected to one side of the pressure measuring shell, a rotary table is rotatably arranged on the upper side of the L-shaped support rod, a rotary rod is arranged in the rotary table, one end of the rotary rod is in threaded arrangement, the rotary rod is in threaded fit with the rotary table, the rotary rod penetrates through the pressure measuring shell and is in sliding connection with the pressure measuring shell, three special-shaped frames are circumferentially arranged, the inner sides of the three special-shaped frames are respectively fixedly connected with one end of the rotary rod, the three special-shaped frames are respectively positioned at the inlets of adjacent connecting pipes, two connecting plates are in one group and are circumferentially arranged with three groups, six connecting plates are respectively fixedly connected with the adjacent special-shaped frames, the inner sides of the six connecting plates are respectively provided with sliding rods in a sliding manner, three limiting blocks are respectively fixedly connected with the two adjacent sliding rods, the inner sides of the three limiting blocks are respectively matched with the pressure measuring pipe, and first springs are respectively fixedly connected between the six connecting plates and the three limiting blocks, six first springs are respectively sleeved on adjacent slide bars, three stopper outer side parts are respectively provided with a sliding frame in a sliding manner, a second spring is fixedly connected between each sliding frame and the adjacent stopper, three second springs are respectively sleeved on the adjacent sliding frame inner side parts, the elastic coefficient of each second spring is greater than that of each first spring, rollers are arranged outside each sliding frame in a rotating manner, the left part of the inner side surface of each connecting pipe is arranged in a stepped manner, the inner side surface of each connecting pipe is a first inclined surface from left to right, a parallel surface and a second inclined surface form, the rollers on the three sliding frames are respectively matched with the inner side surface of each connecting pipe, the stoppers are matched with the pressure measuring pipes, and the pressure measuring pipes are fixed and clamped.
Preferably, the leveling mechanism comprises two support plates, the two support plates are symmetrically arranged, the two support plates are fixedly connected with the outer side surface of the connecting pipe respectively, the inner side parts of the two support plates are rotatably provided with convex discs respectively, torsion springs are fixedly connected between the two support plates and the adjacent convex discs respectively, the two torsion springs are sleeved on the outer side parts of the adjacent convex discs respectively, a limiting shell is fixedly connected between the two convex discs through a support rod, the outer side part of the limiting shell is a sleeve, the inner side part of the limiting shell is a rectangular plate, the upper part of the connecting pipe is provided with two symmetrical rectangular grooves, the inner side part of the limiting shell is matched with the rectangular grooves of the connecting pipe, a sliding plate is arranged at the inner side part of the limiting shell in a sliding manner, the inner side surface of the sliding plate is an inclined plane, a third spring is fixedly connected between the outer side surface of the sliding plate and the limiting shell, the third spring is arranged in the sleeve of the limiting shell, and the two limiting plates are symmetrically arranged, two limiting plates respectively with sliding plate outside portion rigid coupling, four spacing grooves have been seted up on connecting pipe upper portion, two limiting plates respectively with the spacing groove cooperation on the connecting pipe, spacing casing left surface lower part rigid coupling has L shape pole, L shape pole left part slides and is provided with the gag lever post, gag lever post upper portion rigid coupling has the slider, the slider right part runs through spacing casing and rather than sliding connection, the slider right flank is the inclined plane setting, the slider right part cooperates with spacing casing inside portion, sliding plate and limiting plate cooperation, be used for relieving the spacing to the piezometer pipe.
Preferably, the switching mechanism comprises a first sleeve, the first sleeve is rotatably arranged at the right part of the pressure measuring shell, the first sleeve is in sliding connection with the left part of the rotating rod, the right part of the first sleeve is provided with a disc, the left part of the first sleeve is provided with a blind hole, the left part of the first sleeve is provided with a limit groove, the limit groove of the first sleeve is positioned above the blind hole, the left part of the first sleeve is provided with a second sleeve in sliding connection with the left part of the rotating rod, the second sleeve is positioned in the pressure measuring shell, the upper side of the right part of the second sleeve is provided with a lug, the lug on the second sleeve is in sliding connection with the limit groove of the first sleeve, the left part of the second sleeve is fixedly connected with a blocking plate, the blocking plate is in sliding connection with the left part of the rotating rod, the blocking plate is positioned in the pressure measuring shell, the upper part of the blocking plate is provided with a through hole, a fourth spring is fixedly connected between the blocking plate and the first sleeve, the fourth spring is sleeved at the outer side surface of the second sleeve, the left part rigid coupling has logical liquid dish in the pressure measurement casing, logical liquid dish and bull stick left part sliding connection, lead to the liquid dish and be located the left side that blocks the dish, lead to liquid dish and block the sealed cooperation of dish, lead to and seted up three through-hole on the liquid dish, lead to the liquid dish left surface and be three protruding setting, lead to three protruding and the three through-hole on it of liquid dish left surface and align, lead to three protruding and the pressure-measuring pipe cooperation of liquid dish left surface, the second sleeve, block the dish and lead to the cooperation of liquid dish, be used for different pressure-measuring pipe internal pressure switches.
Preferably, seal assembly is including the gasbag, the gasbag sets up the right part in the pressure-measuring tube, gasbag left part and first sleeve sliding connection, the connecting pipe right part slides and is provided with solid fixed ring, gu fixed ring inside portion rigid coupling has the sealing washer, the sealing washer is hollow setting, gu fixed pipe circumference is provided with threely, three fixed pipe left part communicates with the sealing washer respectively and rather than the rigid coupling, three fixed pipe right part slides respectively and is provided with the push rod, the equal rigid coupling in three push rod right part has the fixed plate, three fixed plate respectively with connecting pipe medial surface right part rigid coupling, two push rod right parts of downside are sealed with the fixed plate, a push rod right part and the fixed plate intercommunication of upside, intercommunication has the breather pipe between a push rod right part of upside and the gasbag, gasbag and sealing washer cooperation, a secondary seal for the pressure-measuring tube.
Preferably, the left side surface of the air bag is convexly arranged and used for increasing the attaching area of the air bag and the pressure measuring pipe.
Preferably, the inner side of the sealing ring is thin for increasing the air pressure in the air bag.
Preferably, the flush mechanism is arranged at the right part of the second inclined plane of the connecting pipe, and the flush mechanism is adjacent to the second inclined plane of the connecting pipe.
Preferably, the device also comprises two cleaning components which are symmetrically arranged in the front and back direction, the two cleaning components are respectively positioned in adjacent pressure measuring shells and are used for intercepting and cleaning impurities in petroleum, the cleaning components comprise three filter screens which are fixedly connected to the left part of the first sleeve, the filter screens are positioned at the left part of the pressure measuring shells, the number of the limiting columns is three, the right parts of the three limiting columns are respectively and fixedly connected with the filter screens, the left part in the pressure measuring shells is provided with a notched ring, the notched ring is embedded with three symmetrical limiting rings, the limiting rings on the notched ring are respectively matched with the adjacent limiting columns, an arc-shaped groove is formed in the pressure measuring shells, the notched ring is rotationally matched with the arc-shaped groove of the pressure measuring shells, the lower parts of the pressure measuring shells are fixedly connected with a collecting box which is communicated with the pressure measuring shells, the collecting box is positioned below the limiting grooves of the pressure measuring shells, the limiting columns are matched with the notched rings, the device is used for collecting oil and impurities in the pressure measuring shell.
The invention has the beneficial effects that: the invention increases the extrusion force of three limit blocks in the fixing mechanism on the pressure measuring tube, realizes better effect of fixing the pressure measuring tube through the second spring, respectively drives two adjacent limit plates to move away through two sliding plates in the leveling mechanism, the four limit plates are gradually separated from the limit of four limit grooves on the connecting tube, the limit of the pressure measuring tube is relieved, realizes the effect of relieving the limit of the pressure measuring tube, drives the blocking disc to rotate clockwise through the second sleeve in the switching mechanism, the through holes on the blocking disc rotate clockwise and are sequentially communicated with the other two through holes on the lower part of the liquid passing disc, realizes the effect of switching the pressure in different pressure measuring tubes, increases the pressure in the air bag in the sealing assembly, increases the pressure in three sealing rings, increases the extrusion force of the inner side parts of the three sealing rings on the outer side surface of the adjacent pressure measuring tube, and realizes better sealing effect, drive breach ring clockwise rotation 180 through the three spacing post in the clearance subassembly, at this moment, breach ring notch and the collecting box intercommunication of below, oil and impurity get into in the collecting box in the pressure measurement casing, have realized increasing isolation diaphragm life's effect.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a partial sectional view of a three-dimensional structure of the present invention.
Fig. 3 is a perspective partial sectional view of the securing mechanism of the present invention.
Fig. 4 is an enlarged schematic perspective view of the present invention at a.
Fig. 5 is a partial cross-sectional view of a three-dimensional structure of a flush mechanism of the present invention.
Fig. 6 is a partial cross-sectional view of another alternative embodiment of the flush mechanism of the present invention.
Fig. 7 is a partial sectional view of the switching mechanism of the present invention.
Fig. 8 is a perspective partial sectional view of a seal assembly of the present invention.
Fig. 9 is an enlarged perspective view of the present invention at B.
FIG. 10 is a perspective view of the cleaning assembly of the present invention.
Number designation in the figures: 1-supporting frame, 2-data processor, 3-pressure measuring shell, 4-connecting tube, 5-fixing mechanism, 501-L-shaped supporting rod, 502-rotating disc, 503-rotating rod, 504-special-shaped frame, 505-connecting plate, 506-sliding rod, 507-limiting block, 508-first spring, 509-sliding frame, 510-second spring, 6-leveling mechanism, 601-supporting plate, 602-convex disc, 603-torsion spring, 604-limiting shell, 605-sliding plate, 606-third spring, 607-limiting plate, 608-L-shaped rod, 609-limiting rod, 610-sliding block, 7-switching mechanism, 701-first sleeve, 702-second sleeve, 703-blocking disc and 704-fourth spring, 705-liquid passing disc, 8-sealing assembly, 801-air bag, 802-fixing ring, 803-sealing ring, 804-fixing pipe, 805-push rod, 806-fixing plate, 9-cleaning assembly, 901-filter screen, 902-limiting column, 903-notch ring and 10-pressure measuring pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1
A differential pressure transmitter with high sealing performance for an oil field is disclosed, as shown in figures 1 and 2, the differential pressure transmitter comprises a support frame 1, a data processor 2 is fixedly connected on the upper portion of the support frame 1, two pressure measuring shells 3 are symmetrically arranged in the front and back, the two pressure measuring shells 3 are communicated with the data processor 2 through pipelines, three connecting pipes 4 are in one group, two groups are symmetrically arranged in the front and back, the three connecting pipes 4 in each group are respectively communicated and fixedly connected with the adjacent pressure measuring shells 3, fixing mechanisms 5 for fixing pressure measuring pipes 10 are respectively arranged on the two pressure measuring shells 3, the fixing mechanisms 5 realize better effect of fixing the pressure measuring pipes, two leveling mechanisms 6 are respectively arranged on each connecting pipe 4, the fixing mechanisms 5 and the leveling mechanisms 6 are matched to level the pressure measuring pipes 10 on the fixing mechanisms 5, the leveling mechanisms 6 realize the effect of removing limit of the pressure measuring pipes, switching mechanisms 7 for switching pressures of different pressure measuring pipes 10 are respectively arranged on the two pressure measuring shells 3, the switching mechanism 7 cooperates with the fixing mechanism 5 to seal the right end of the fixed pressure measuring pipe 10, sealing assemblies 8 used for sealing the pressure measuring pipe 10 are respectively arranged on the two pressure measuring shells 3, and the sealing assemblies 8 cooperate with the fixing mechanism 5 to perform secondary sealing on the pressure measuring pipe 10 sealed by the switching mechanism 7.
When the device needs to be used, an operator firstly puts three pressure measuring tubes 10 into three connecting tubes 4 on the front side in sequence, the three connecting tubes 4 gradually move rightwards, the right ends of the three connecting tubes 4 are contacted with and limited by a leveling mechanism 6, then the operator starts a fixing mechanism 5 on the front side, the fixing mechanism 5 moves the pressure measuring tubes 10 which are not aligned rightwards, the fixing mechanism 5 and the leveling mechanism 6 are matched to align the pressure measuring tubes 10 which are not aligned in the process that the pressure measuring tubes 10 which are not aligned move rightwards, then the fixing mechanism 5 starts the leveling mechanism 6, the leveling mechanism 6 releases the limitation on the three connecting tubes 4, and then the fixing mechanism 5 is matched with the connecting tubes 4 to gradually fix the pressure measuring tubes 10, when the right ends of the three connecting pipes 4 are contacted with the switching mechanism 7, the fixing mechanism 5 is matched with the switching mechanism 7 to carry out primary sealing on the three connecting pipes 4, in the process of carrying out primary sealing on the three connecting pipes 4, the fixing mechanism 5 starts the sealing assembly 8 to carry out secondary sealing on the right ends of the three connecting pipes 4, after the three connecting pipes 4 are sealed twice, an operator stops the fixing mechanism 5 at the front side, then the operator repeats the steps to fix and seal the other three pressure measuring pipes 10, after the six pressure measuring pipes 10 are installed, at the moment, the operator switches on the six pressure measuring pipes 10, oil in the two pressure measuring pipes 10 at the uppermost side enters the pressure measuring shell 3 through the switching mechanism 7, the four pressure measuring pipes 10 at the lower side cannot be communicated with the pressure measuring shell 3 due to the blocking of the switching mechanism 7, and then the pressure in the two pressure measuring shells 3 is respectively transmitted to the data processor 2 through the pipelines, the data processor 2 measures the pressures of two places, in the process that the petroleum enters the pressure measuring shell 3, the sealing assembly 8 is started by the petroleum in the pressure measuring shell 3, the sealing assembly 8 seals the pressure measuring tubes 10 for the third time, when the pressure measurement in the two pressure measuring tubes 10 on the upper side is completed, an operator starts the switching mechanism 7 to measure the pressure difference between the other pressure measuring tubes 10 to finally obtain nine groups of data, when all data measurement is completed, the operator disconnects and communicates the six pressure measuring tubes 10, then the operator starts the fixing mechanism 5 on the front side to reset, the fixing mechanism 5 releases the fixation of the three pressure measuring tubes 10, in the process of releasing the fixation of the three pressure measuring tubes 10, the fixing mechanism 5 resets the sealing assembly 8 and simultaneously resets the leveling mechanism 6, and then the fixing mechanism 5 on the rear side is started by the operator to repeat the resetting process, when the two fixing mechanisms 5 recover the initial positions, the operator takes out the six piezometric tubes 10 in sequence, and the device is used.
Example 2
On the basis of embodiment 1, as shown in fig. 3 and 4, the fixing mechanism 5 includes an L-shaped support rod 501, the L-shaped support rod 501 is fixedly connected to one end of the pressure measuring housing 3, a rotary table 502 is rotatably disposed on the upper side of the L-shaped support rod 501, a rotary rod 503 is disposed in the rotary table 502, one end of the rotary rod 503 is disposed in a threaded manner, the rotary rod 503 is in threaded engagement with the rotary table 502, the rotary rod 503 penetrates through the pressure measuring housing 3 and is slidably connected therewith, three special-shaped frames 504 are circumferentially disposed, the inner side portions of the three special-shaped frames 504 are respectively fixedly connected to the left portion of the rotary rod 503, the three special-shaped frames 504 are respectively located at the left portion of the adjacent connecting pipe 4, two connecting plates 505 are in one group, three groups are circumferentially disposed, six connecting plates 505 are respectively fixedly connected to the adjacent special-shaped frames 504, the inner side portions of the six connecting plates 505 are respectively slidably disposed with a slide rod 506, three stoppers 507 are circumferentially disposed, three stoppers 507 are respectively fixedly connected to the adjacent two slide rods 506, the inner side parts of the three limit blocks 507 are all matched with the piezometer tube 10, first springs 508 are fixedly connected between the six connecting plates 505 and the three limit blocks 507 respectively, the six first springs 508 are sleeved on the adjacent sliding rods 506 respectively, sliding frames 509 are arranged on the outer side parts of the three limit blocks 507 respectively in a sliding manner, second springs 510 are fixedly connected between the three sliding frames 509 and the adjacent limit blocks 507 respectively, the three second springs 510 are sleeved on the inner side parts of the adjacent sliding frames 509 respectively, the elastic coefficient of the second springs 510 is larger than that of the first springs 508, rollers are rotatably arranged outside the three sliding frames 509, the left part of the inner side surface of the connecting tube 4 is arranged in a ladder manner, the inner side surface of the connecting tube 4 is a first inclined surface from left to right, parallel surface and second inclined plane constitute, and the gyro wheel on the three carriage 509 cooperates with 4 medial surfaces of connecting pipe respectively, and the effect of better fixed pressure-measuring pipe 10 has been realized through second spring 510 to the increase of the extrusion force of pressure-measuring pipe 10 to three stopper 507 in the fixed establishment 5.
As shown in fig. 5 and fig. 6, the leveling mechanism 6 includes two support plates 601, two support plates 601 are symmetrically disposed, two support plates 601 are respectively fixedly connected to the outer side of the connecting pipe 4, the inner sides of two support plates 601 are respectively rotatably disposed with a convex disc 602, a torsion spring 603 is respectively fixedly connected between two support plates 601 and the adjacent convex disc 602, two torsion springs 603 are respectively sleeved on the outer sides of the adjacent convex discs 602, a position-limiting housing 604 is fixedly connected between the two convex discs 602 through a support rod, the outer side of the position-limiting housing 604 is a sleeve, the inner side of the position-limiting housing 604 is a rectangular plate, the upper portion of the connecting pipe 4 is disposed with two symmetrical rectangular grooves, the inner side of the position-limiting housing 604 is matched with the rectangular groove of the connecting pipe 4, a sliding plate 605 is slidably disposed on the inner side of the position-limiting housing 604, the inner side of the sliding plate 605 is disposed in an inclined plane, a third spring 606 is fixedly connected between the outer side of the sliding plate 605 and the position-limiting housing 604, the third spring 606 is located in a sleeve of the limiting shell 604, two limiting plates 607 are symmetrically arranged, the two limiting plates 607 are fixedly connected with the outer side portions of the sliding plates 605 respectively, four limiting grooves are formed in the upper portion of the connecting pipe 4, the two limiting plates 607 are matched with the limiting grooves in the connecting pipe 4 respectively, an L-shaped rod 608 is fixedly connected to the lower portion of the left side face of the limiting shell 604, a limiting rod 609 is slidably arranged on the left portion of the L-shaped rod 608, a sliding block 610 is fixedly connected to the upper portion of the limiting rod 609, the right portion of the sliding block 610 penetrates through the limiting shell 604 and is slidably connected with the limiting shell 604, the right side face of the sliding block 610 is arranged in an inclined plane, the right portion of the sliding block 610 is matched with the inner side portion of the limiting shell 604, the two sliding plates 605 in the leveling mechanism 6 drive the two adjacent limiting plates 607 to move away from each other, the four limiting plates 607 are gradually separated from the limiting grooves in the connecting pipe 4, limiting of the piezometer pipe 4 is released, and the effect of releasing the limiting on the piezometer 10 is achieved.
As shown in fig. 7, the switching mechanism 7 includes a first sleeve 701, the first sleeve 701 is rotatably disposed at the right portion of the pressure measuring housing 3, the first sleeve 701 is slidably connected to the left portion of the rotating rod 503, a disk is disposed at the right portion of the first sleeve 701, a blind hole is disposed at the left portion of the first sleeve 701, a limit groove is disposed at the left portion of the first sleeve 701, the limit groove of the first sleeve 701 is located above the blind hole, a second sleeve 702 is slidably disposed at the left portion of the first sleeve 701, the second sleeve 702 is slidably connected to the left portion of the rotating rod 503, the second sleeve 702 is disposed in the pressure measuring housing 3, a protrusion is disposed at the upper side of the right portion of the second sleeve 702, the protrusion on the second sleeve 702 is slidably connected to the limit groove of the first sleeve 701, a blocking plate 703 is fixedly connected to the left portion of the second sleeve 702, the blocking plate 703 is slidably connected to the left portion of the rotating rod 503, the blocking plate 703 is disposed in the pressure measuring housing 3, a through hole is disposed at the upper portion of the blocking plate 703, a fourth spring 704 is fixedly connected between the blocking plate 703 and the first sleeve 701, the fourth spring 704 is sleeved on the outer side face of the second sleeve 702, a liquid passing disc 705 is fixedly connected to the left portion in the pressure measuring shell 3, the liquid passing disc 705 is connected with the left portion of the rotating rod 503 in a sliding mode, the liquid passing disc 705 is located on the left side of the blocking disc 703, the liquid passing disc 705 is in sealing fit with the blocking disc 703, three through holes are formed in the liquid passing disc 705, the left side face of the liquid passing disc 705 is provided with three protrusions, the three protrusions of the left side face of the liquid passing disc 705 are aligned with the three through holes in the liquid passing disc, the three protrusions of the left side face of the liquid passing disc 705 are matched with the pressure measuring tube 10, the second sleeve 702 in the switching mechanism 7 drives the blocking disc 703 to rotate clockwise, the through holes in the blocking disc 703 rotate clockwise and are communicated with the rest two through holes in the lower portion of the liquid passing disc 705 sequentially, and the effect of switching pressure measuring tubes 10 is achieved.
As shown in fig. 8 and 9, the sealing assembly 8 includes an air bag 801, the air bag 801 is disposed at the right portion in the pressure measuring housing 3, the left portion of the air bag 801 is slidably connected to the first sleeve 701, the left side of the air bag 801 is protruded to increase the bonding area between the air bag 801 and the pressure measuring tube 10, the right portion of the connecting tube 4 is slidably provided with a fixing ring 802, the inner side of the fixing ring 802 is fixedly connected to a sealing ring 803, the sealing ring 803 is hollow, three fixing tubes 804 are circumferentially disposed, the left portions of the three fixing tubes 804 are respectively communicated with and fixedly connected to the sealing ring 803, the inner side of the sealing ring 803 is thin to increase the air pressure in the air bag 801, the right portions of the three fixing tubes 804 are respectively slidably provided with push rods 805, the right portions of the three push rods 805 are respectively fixedly connected to fixing plates 806, the three fixing plates 806 are respectively fixedly connected to the right portions of the inner side of the connecting tube 4, the right portions of the two push rods 805 at the lower side are sealed to the fixing plates 806, the right portion of the one push rod 805 at the upper side is communicated with the fixing plate 806, a vent pipe is communicated between the right part of one push rod 805 on the upper side and the air bag 801, so that the pressure in the air bag 801 in the sealing assembly 8 is increased, meanwhile, the pressure in the three sealing rings 803 is increased, and the extrusion force of the inner parts of the three sealing rings 803 on the outer side surface of the adjacent piezometer tube 10 is increased, thereby realizing better sealing effect.
The flush mechanism 6 is arranged at the right part of the second inclined surface of the connecting pipe 4, and the flush mechanism 6 is adjacent to the second inclined surface of the connecting pipe 4.
When the device needs to be used, an operator firstly puts three pressure measuring tubes 10 into three connecting tubes 4 on the front side in sequence, in the process that the first pressure measuring tube 10 is put into the connecting tube 4, the operator passes the pressure measuring tube 10 through the special-shaped frame 504 on the upper side, then the right end of the pressure measuring tube 10 is contacted with the left side surfaces of two limit shells 604, the pressure measuring tube 10 is limited by the two limit shells 604 and can not move rightwards, when the three pressure measuring tubes 10 are limited by the limit shells 604 and can not move, the operator starts the fixing mechanism 5, the operator rotates the rotating disc 502 clockwise, the rotating disc 502 drives the rotating rod 503 to move rightwards, the rotating rod 503 drives the three special-shaped frames 504 to move rightwards, the special-shaped frame 504 drives parts thereon to move rightwards, when the rollers on the three sliding frames 509 are contacted with the first inclined surfaces on the inner side surfaces of the connecting tubes 4, the rollers on the three sliding frames 509 relatively move, the three sliding frames 509 drive the adjacent second springs 510 to move relatively, because the elastic coefficient of the second springs 510 is greater than that of the first springs 508, the three second springs 510 are not compressed, the three second springs 510 drive the adjacent limiting blocks 507 to move relatively, the three limiting blocks 507 drive the six sliding rods 506 to move relatively, the six first springs 508 are stretched, when the inner side surfaces of the three limiting blocks 507 contact the pressure measuring tube 10, at this time, the three sliding frames 509 continue to move relatively, the three second springs 510 are compressed, the three limiting blocks 507 clamp the right end of the pressure measuring tube 10, the three first springs 508 are not stretched any more, at this time, the rollers on the three sliding frames 509 are positioned on the inner surface of the connecting tube 4, the junction between the first inclined surface and the parallel surface, and then the rollers on the three sliding frames 509 move along the parallel surface of the inner surface of the connecting tube 4, the three sliding frames 509 move rightwards, because the three pressure measuring pipes 10 are manually controlled, the right ends of the three pressure measuring pipes 10 cannot be aligned, therefore, the three sliding frames 509 move rightwards to drive the unaligned pressure measuring pipes 10 to move rightwards, the aligned pressure measuring pipes 10 do not move, when the rollers on the three sliding frames 509 are located at the junction of the parallel surface and the second inclined surface, the three pressure measuring pipes 10 are all in contact with the left side surface of the limiting shell 604, the three pressure measuring pipes 10 are aligned, and at this time, the right side surface of the special-shaped frame 504 is in contact with the left ends of the two sliding blocks 610.
Then, the operator continues to rotate the rotating disc 502, the rollers on the three sliding frames 509 are limited by the second inclined surface of the inner surface of the connecting pipe 4, the rollers on the three sliding frames 509 move relatively, meanwhile, the extrusion force of the three limiting blocks 507 on the pressure measuring pipe 10 is increased, a better effect on fixing the pressure measuring pipe 10 is achieved through the second spring 510, the three second springs 510 are compressed, when the rollers on the three sliding frames 509 move to the right end of the second inclined surface, the fixing of the three pressure measuring pipe 10 by the fixing mechanism 5 is completed, in the process of fixing the three pressure measuring pipes 10, the limit state of the leveling mechanism 6 is released by the special-shaped frame 504, the special-shaped frame 504 moves to the right, the two sliding blocks 610 drive the adjacent limiting rods 609 to move to the right, the two sliding blocks 610 drive the adjacent sliding plates 605 to move away from the right, and the two third springs 606 are compressed, the two sliding plates 605 respectively drive the two adjacent limiting plates 607 to move away, the four limiting plates 607 are gradually separated from the limiting of the four limiting grooves on the connecting pipe 4, the limiting of the pressure measuring pipe 10 is released, then the pressure measuring pipe 10 pushes the two limiting shells 604 to rotate anticlockwise around the sleeves thereon, the four torsion springs 603 gradually accumulate force, and the two limiting shells 604 gradually rotate into the two rectangular grooves on the connecting pipe 4.
Because parallel and level mechanism 6 sets up the second inclined plane right part at connecting pipe 4, parallel and level mechanism 6 is adjacent with the second inclined plane of connecting pipe 4 for dysmorphism frame 504 right side convex pressure-measuring pipe 10 is short, avoids three pressure-measuring pipe 10 right part to lean out the overlength and the problem that its right-hand member appears and squints from top to bottom appears, guarantees simultaneously that follow-up three pressure-measuring pipe 10 moves the in-process in right, and the right part cover of three pressure-measuring pipe 10 is on leading to three arch of liquid dish 705 left surface and with lead to liquid dish 705 left surface and align.
Then, the three special-shaped frames 504 continuously drive the adjacent pressure measuring tubes 10 to move rightwards, the three pressure measuring tubes 10 penetrate through the adjacent sealing rings 803, then, the three pressure measuring tubes 10 are contacted with the three bulges on the left side surface of the liquid passing disc 705, at the moment, the right side surface of the three special-shaped frames 504 is contacted with the adjacent fixing rings 802, then, the right ends of the three pressure measuring tubes 10 are gradually sleeved in the three bulges on the left side surface of the liquid passing disc 705, the switching mechanism 7 performs first sealing on the three pressure measuring tubes 10, the three special-shaped frames 504 drive the adjacent fixing rings 802 to move rightwards, the three fixing rings 802 drive the adjacent sealing rings 803 to move rightwards, the three sealing rings 803 drive the adjacent three fixing tubes 804 to move rightwards, nine fixing tubes 804 respectively generate relative displacement with the adjacent push rods 805, the pressures of the three sealing rings 803 and the air bags 801 are gradually increased, and the inner side surfaces of the three sealing rings 803 gradually press the outer side surfaces of the right parts of the pressure measuring tubes 10, because sealing washer 803 inside portion is thin for when sealing washer 803 inside portion and pressure-measuring pipe 10 pasted tightly, the better sealed effect has been realized at pressure-measuring pipe 10 lateral surface to the better tiling of sealing washer 803 inside portion ability, and at this moment, sealing washer 803 accomplishes the secondary and seals to pressure-measuring pipe 10.
When the right ends of the three pressure measuring tubes 10 contact the left side surface of the liquid passing disk 705, the operator stops rotating the rotating disk 502, at this time, the three protrusions on the left side surface of the liquid passing disk 705 completely enter the adjacent pressure measuring tubes 10, the two sealing of the pressure measuring tubes 10 are completed, at this time, the through holes of the blocking disk 703 are aligned with the through holes on the upper side of the liquid passing disk 705, then, the operator repeats the above steps to fix and seal the three pressure measuring tubes 10 on the rear side, then, the operator connects the six pressure measuring tubes 10, the six pressure measuring tubes 10 are gradually filled with oil, then the oil in the two pressure measuring tubes 10 on the upper side passes through the through holes on the upper side of the liquid passing disk 705 and the through holes of the blocking disk 703 to enter the right part of the adjacent pressure measuring shell 3, and the pressure in the oil to be measured is usually greater than the atmospheric pressure, therefore, the pressure in the pressure measuring shell 3 extrudes the air bag 801, the pressure in the air bag 801 increases, and at the same time, the pressure in the three sealing rings 803 is increased, the extrusion force of the inner side parts of the three sealing rings 803 on the outer side surfaces of the adjacent piezometric tubes 10 is increased, and a better sealing effect is realized, at the moment, the third sealing of the three pressure measuring tubes 10 by the three sealing rings 803 is completed, then the oil in the right part of the two pressure measuring shells 3 transmits the pressure to the data processor 2 through the adjacent pipelines, the data processor 2 records the pressure difference in the two pipelines, at this time, after a group of differential pressure data is recorded, an operator rotates the disk on the right part of the first sleeve 701 clockwise, the disk drives the first sleeve 701 to rotate clockwise, the first sleeve 701 drives the second sleeve 702 to rotate clockwise, the second sleeve 702 drives the blocking disc 703 to rotate clockwise, the through holes on the blocking disc 703 rotate clockwise sequentially to be communicated with the other two through holes on the lower part of the liquid passing disc 705, and then the data processor 2 records the remaining eight groups of data sequentially.
After all data recording is finished, an operator disconnects the six pressure measuring tubes 10, then the operator starts the fixing mechanism 5 on the front side to reset, the fixing mechanism 5 releases the fixation of the three pressure measuring tubes 10, the operator rotates the rotary table 502 anticlockwise, the rotary table 502 drives the rotary rod 503 to move leftwards, the rotary rod 503 drives the three special-shaped frames 504 to move leftwards, meanwhile, the three pressure measuring tubes 10 move leftwards, the three pressure measuring tubes 10 gradually separate from the three bulges on the left side surface of the liquid through disc 705, meanwhile, the air pressure in the air bag 801 and the three sealing rings 803 is reduced, the three sealing rings 803 gradually release the sealing on the adjacent pressure measuring tubes 10, the sealing assembly 8 is completely reset, then, when the three special-shaped frames 504 continue to move leftwards, the four torsion springs 603 reset, the four torsion springs 603 drive the adjacent convex discs 602 to rotate clockwise, the four convex discs 602 drive the two limiting shells 604 to rotate clockwise around the convex discs 602, after the two limiting shells 604 are reset, the two third springs 606 drive the adjacent sliding plates 605 to move downwards, the two sliding plates 605 drive the adjacent two limiting plates 607 to move downwards, the four limiting plates 607 enter the limiting grooves on the connecting pipe 4 to be limited, the two sliding plates 605 move downwards to respectively drive the adjacent sliding blocks 610 to move leftwards to reset, the two leveling mechanisms 6 are reset, then, the rollers on the three sliding frames 509 sequentially pass through the second inclined plane, the parallel plane and the first inclined plane of the inner surface of the connecting pipe 4, the fixing mechanism 5 on the front side is reset, then, the operator starts the fixing mechanism 5 on the rear side to repeat the resetting process, when the fixing mechanism 5 on the rear side is reset to the initial position, the operator sequentially takes out the six piezometer tubes 10, the device is used completely, when the piezometer tubes 10 are not six, for example, when the front and the back of the pressure measuring pipes 10 are two, an operator puts one pressure measuring pipe 10 on the front side into the connecting pipe 4 above the front portion, then puts the other pressure measuring pipe 10 on the front side into the connecting pipe 4 on the front side and the back side, the two connecting pipes 4 on the back side are sequentially put into the two connecting pipes 4 on the back side according to the steps, and then the operator measures four groups of data of the four pressure measuring pipes 10.
Example 3
On the basis of embodiment 2, as shown in fig. 10, the pressure measuring device further comprises two cleaning assemblies 9, the two cleaning assemblies 9 are symmetrically arranged in front and back of the pressure measuring housing 3, the two cleaning assemblies 9 are respectively located in the adjacent pressure measuring housings 3, the cleaning assemblies 9 are used for intercepting and cleaning impurities in petroleum, the cleaning assemblies 9 comprise filter screens 901, the filter screens 901 are fixedly connected to the left portion of the first sleeve 701, the filter screens 901 are located on the left portion of the pressure measuring housing 3, three limiting columns 902 are circumferentially arranged, the right portions of the three limiting columns 902 are respectively fixedly connected with the filter screens 901, the left portion of the pressure measuring housing 3 is provided with a notched ring 903, the notched ring 903 is embedded with three symmetrical limiting rings, the limiting rings on the notched ring 903 are respectively matched with the adjacent limiting columns 902, an arc-shaped groove is formed in the pressure measuring housing 3, the notched ring 903 is rotatably matched with the arc-shaped groove of the pressure measuring housing 3, the lower portion of the pressure measuring housing 3 is fixedly connected with the collecting box, the collecting box is communicated with the pressure measuring shell 3, is positioned below a limiting groove of the pressure measuring shell 3, and is matched with the limiting column 902 and the notch ring 903 for collecting the petroleum and impurities in the pressure measuring shell 3.
After oil enters the pressure measuring shell 3, the filter screen 901 filters the oil, the impurities in the oil are intercepted, the impurities in the oil are prevented from contacting with an isolation diaphragm in the data processor 2, the aging speed of the isolation diaphragm is prevented from increasing, errors occur in the measurement result of the data processor 2, after data measurement, an operator disconnects and communicates six pressure measuring tubes 10, the oil in the pressure measuring shell 3 needs to be cleaned, the operator pushes a disc on the first sleeve 701 to move leftwards, the disc on the first sleeve 701 drives the first sleeve 701 to move leftwards, the first sleeve 701 drives the filter screen 901 to move leftwards, the fourth spring 704 is compressed, the filter screen 901 drives the three limiting columns 902 to move leftwards, after the three limiting columns 902 enter the three limiting rings on the notch ring 903, the operator rotates the disc 180 degrees clockwise, the first sleeve 701 rotates 180 degrees clockwise along with the disc 701, and the first sleeve 701 rotates 180 degrees clockwise, and the oil is prevented from contacting with the isolation diaphragm in the data processor 2, the oil is prevented from being cleaned up by the oil existing in the pressure measuring shell 3, the oil is prevented from moving leftwards by the operator, the disk 701, the operator, the oil is prevented from moving leftwards by pushing the disk 701 by the disk, and the oil to move leftwards by pushing the oil to be cleaned by the oil, first sleeve 701 drives breach ring 903 clockwise rotation 180 through three spacing post 902, at this moment, breach ring 903 breach and the collecting box intercommunication of below, oil and impurity get into in the collecting box in the pressure measurement casing 3, prevent that oil and impurity that leaves in the pressure measurement casing 3 from causing the damage to the isolation diaphragm, the effect that increases isolation diaphragm life has been realized, oil and impurity discharge back in the pressure measurement casing 3, operating personnel resets to clearance subassembly 9, move the disc right after operating personnel anticlockwise rotation disc 180, clearance subassembly 9 resets and accomplishes, operating personnel clears up and resets to the oil in the collecting box afterwards.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (8)
1. The utility model provides an oil field is with differential pressure transmitter with high leakproofness ability, including support frame (1), support frame (1) upper portion rigid coupling has data processor (2), the symmetry is provided with two around pressure measurement casing (3), two pressure measurement casings (3) are through pipeline and data processor (2) intercommunication, connecting pipe (4) are three for a set of, the symmetry is provided with two sets ofly around, three connecting pipe (4) in every group communicate and rigid coupling with adjacent pressure measurement casing (3) respectively, its characterized in that: the pressure measuring device is characterized by further comprising two fixing mechanisms (5), the two fixing mechanisms (5) are symmetrically arranged in the front and back direction, the two fixing mechanisms (5) are respectively arranged on the adjacent pressure measuring shells (3), the fixing mechanisms (5) are used for fixing the pressure measuring tubes (10), each connecting tube (4) is respectively provided with two parallel and level mechanisms (6), the fixing mechanisms (5) and the parallel and level mechanisms (6) are matched to enable the pressure measuring tubes (10) on the fixing mechanisms (5) to be parallel and level, the two pressure measuring shells (3) are respectively provided with a switching mechanism (7) used for switching the pressure of different pressure measuring tubes (10), the switching mechanism (7) is matched with the fixing mechanisms (5) to seal the right ends of the fixed pressure measuring tubes (10), the two pressure measuring shells (3) are respectively provided with sealing assemblies (8) used for sealing the pressure measuring tubes (10), and the sealing assemblies (8) are matched with the fixing mechanisms (5) to perform secondary sealing on the pressure measuring tubes (10) sealed by the switching mechanism (7);
the fixing mechanism (5) comprises an L-shaped support rod (501), the L-shaped support rod (501) is fixedly connected to one side of the pressure measuring shell (3), a rotary disc (502) is rotatably arranged on the upper side of the L-shaped support rod (501), three rotary rods (503) are arranged in the rotary disc (502), one ends of the rotary rods (503) are arranged in a threaded manner, the rotary rods (503) are in threaded fit with the rotary disc (502), the rotary rods (503) penetrate through the pressure measuring shell (3) and are in sliding connection with the pressure measuring shell, three special-shaped frames (504) are circumferentially arranged, the inner side parts of the three special-shaped frames (504) are respectively fixedly connected with one ends of the rotary rods (503), the three special-shaped frames (504) are respectively positioned at inlets of adjacent connecting pipes (4), two connecting plates (505) form a group and are circumferentially arranged in three groups, six connecting plates (505) are respectively fixedly connected with the adjacent special-shaped frames (504), and sliding rods (506) are respectively arranged at the inner side parts of the six connecting plates (505), three limit blocks (507) are arranged in the circumferential direction, the three limit blocks (507) are fixedly connected with two adjacent sliding rods (506) respectively, the inner side parts of the three limit blocks (507) are matched with the pressure measuring pipe (10), six connecting plates (505) are fixedly connected with the three limit blocks (507) respectively, six first springs (508) are sleeved on the adjacent sliding rods (506) respectively, the outer side parts of the three limit blocks (507) are provided with sliding frames (509) in a sliding mode respectively, the three sliding frames (509) are fixedly connected with the adjacent limit blocks (507) respectively, the three second springs (510) are sleeved on the inner side parts of the adjacent sliding frames (509) respectively, the elastic coefficient of the second springs (510) is larger than that of the first springs (508), rollers are rotatably arranged outside the three sliding frames (509), the left part of the inner side surface of the connecting pipe (4) is arranged in a ladder mode, connecting pipe (4) medial surface is first inclined plane, parallel surface and second inclined plane from a left side to the right side and constitutes, and the gyro wheel on three carriage (509) cooperates with connecting pipe (4) medial surface respectively, and the cooperation through stopper (507) and pressure-measuring pipe (10) is used for fixed and the chucking of pressure-measuring pipe (10).
2. The differential pressure transmitter with high sealing performance for oil field according to claim 1, characterized in that: the leveling mechanism (6) comprises support plates (601), two support plates (601) are symmetrically arranged, the two support plates (601) are fixedly connected with the outer side surface of the connecting pipe (4) respectively, the inner side parts of the two support plates (601) are rotatably provided with convex discs (602) respectively, torsion springs (603) are fixedly connected between the two support plates (601) and the adjacent convex discs (602) respectively, the two torsion springs (603) are sleeved on the outer side parts of the adjacent convex discs (602) respectively, a limiting shell (604) is fixedly connected between the two convex discs (602) through a support rod, the outer side part of the limiting shell (604) is a sleeve, the inner side part is a rectangular plate, the upper part of the connecting pipe (4) is provided with two symmetrical rectangular grooves, the inner side part of the limiting shell (604) is matched with the rectangular groove of the connecting pipe (4), the inner side part of the limiting shell (604) is provided with a sliding plate (605) in a sliding manner, the sliding plate (605) is positioned in the limiting shell (604), the inner side surface of the sliding plate (605) is arranged in an inclined plane, a third spring (606) is fixedly connected between the outer side surface of the sliding plate (605) and the limiting shell (604), the third spring (606) is positioned in the sleeve of the limiting shell (604), two limiting plates (607) are symmetrically arranged, the two limiting plates (607) are respectively fixedly connected with the outer side part of the sliding plate (605), the upper part of the connecting pipe (4) is provided with four limiting grooves, the two limiting plates (607) are respectively matched with the limiting grooves on the connecting pipe (4), the lower part of the left side surface of the limiting shell (604) is fixedly connected with an L-shaped rod (608), the left part of the L-shaped rod (608) is provided with a limiting rod (609) in a sliding manner, the upper part of the limiting rod (609) is fixedly connected with a sliding block (610), the right part of the sliding block (610) penetrates through the limiting shell (604) and is connected with the limiting shell (604) in a sliding manner, the right side surface of the sliding block (610) is arranged in an inclined plane, the right part of the sliding block (610) is matched with the inner side part of the limiting shell (604), the sliding plate (605) is matched with the limiting plate (607) and used for releasing the limiting of the pressure measuring pipe (10).
3. The differential pressure transmitter with high sealing performance for oil field according to claim 2, characterized in that: the switching mechanism (7) comprises a first sleeve (701), the first sleeve (701) is rotatably arranged at the right part of the pressure measuring shell (3), the first sleeve (701) is in sliding connection with the left part of the rotating rod (503), a disc is arranged at the right part of the first sleeve (701), a blind hole is formed at the left part of the first sleeve (701), a limit groove is formed at the left part of the first sleeve (701), the limit groove of the first sleeve (701) is positioned above the blind hole, a second sleeve (702) is slidably arranged at the left part of the first sleeve (701), the second sleeve (702) is in sliding connection with the left part of the rotating rod (503), the second sleeve (702) is positioned in the pressure measuring shell (3), a convex block is arranged at the upper side of the right part of the second sleeve (702), the convex block on the second sleeve (702) is in sliding connection with the limit groove of the first sleeve (701), a fixed connection disc (703) is blocked at the left part of the second sleeve (702), and a blocking disc (703) is in sliding connection with the left part of the rotating rod (503), the blocking disc (703) is positioned in the pressure measuring shell (3), the upper part of the blocking disc (703) is provided with a through hole, a fourth spring (704) is fixedly connected between the blocking disc (703) and the first sleeve (701), the fourth spring (704) is sleeved on the outer side surface of the second sleeve (702), the left part in the pressure measuring shell (3) is fixedly connected with a liquid passing disc (705), the liquid passing disc (705) is in sliding connection with the left part of the rotating rod (503), the liquid passing disc (705) is positioned on the left side of the blocking disc (703), the liquid passing disc (705) is in sealing fit with the blocking disc (703), the liquid passing disc (705) is provided with three through holes, the left side surface of the liquid passing disc (705) is provided with three bulges, the three bulges on the left side surface of the liquid passing disc (705) are aligned with the three through holes on the liquid passing disc, the three bulges on the left side surface of the liquid passing disc (705) are matched with the pressure measuring tube (10), the second sleeve (702), the blocking disc (703) is matched with the liquid passing disc (705), is used for switching the pressure in different pressure measuring pipes (10).
4. The differential pressure transmitter with high sealing performance for oil field according to claim 3, characterized in that: the sealing assembly (8) comprises an air bag (801), the air bag (801) is arranged at the right part in the pressure measuring shell (3), the left part of the air bag (801) is in sliding connection with a first sleeve (701), the right part of the connecting pipe (4) is provided with a fixing ring (802) in a sliding manner, the inner side part of the fixing ring (802) is fixedly connected with a sealing ring (803), the sealing rings (803) are arranged in a hollow manner, three fixing pipes (804) are arranged in the circumferential direction, the left parts of the three fixing pipes (804) are respectively communicated with and fixedly connected with the sealing rings (803), the right parts of the three fixing pipes (804) are respectively provided with a push rod (805) in a sliding manner, the right parts of the three push rods (805) are respectively fixedly connected with a fixing plate (806), the three fixing plates (806) are respectively fixedly connected with the right part of the inner side surface at the lower side of the connecting pipe (4), the right parts of the two push rods (805) are sealed with the fixing plates (806), the right part of one push rod (805) at the upper side is communicated with the fixing plate (806), a vent pipe is communicated between the right part of one push rod (805) at the upper side and the air bag (801), and the air bag (801) is matched with the sealing ring (803) and used for secondary sealing of the pressure measuring pipe (10).
5. The differential pressure transmitter with high sealing performance for oil field according to claim 4, characterized in that: the left side surface of the air bag (801) is arranged in a protruding mode and used for increasing the attaching area of the air bag (801) and the piezometer tube (10).
6. The differential pressure transmitter with high sealing performance for oil field according to claim 5, characterized in that: the inner side of the sealing ring (803) is thin, and is used for increasing the air pressure in the air bag (801).
7. The differential pressure transmitter with high sealing performance for oil field according to claim 1, characterized in that: the leveling mechanism (6) is arranged at the right part of the second inclined plane of the connecting pipe (4), and the leveling mechanism (6) is adjacent to the second inclined plane of the connecting pipe (4).
8. The differential pressure transmitter with high sealing performance for oil field according to claim 5, characterized in that: the device is characterized by further comprising two cleaning components (9), the two cleaning components (9) are symmetrically arranged in front and back, the two cleaning components (9) are respectively positioned in the adjacent pressure measuring shells (3), the cleaning components (9) are used for intercepting and cleaning impurities in petroleum, each cleaning component (9) comprises a filter screen (901), the filter screens (901) are fixedly connected to the left portion of the first sleeve (701), the filter screens (901) are positioned at the left portions of the pressure measuring shells (3), three limiting columns (902) are circumferentially arranged, the right portions of the three limiting columns (902) are respectively fixedly connected with the filter screens (901), notched rings (903) are arranged at the left portions in the pressure measuring shells (3), three symmetrical limiting rings are embedded on the notched rings (903), the limiting rings on the notched rings (903) are respectively matched with the adjacent limiting columns (902), arc-shaped grooves are formed in the pressure measuring shells (3), and the notched rings (903) are rotationally matched with the arc-shaped grooves of the pressure measuring shells (3), the lower part of the pressure measuring shell (3) is fixedly connected with a collecting box, the collecting box is communicated with the pressure measuring shell (3), the collecting box is positioned below a limiting groove of the pressure measuring shell (3), and a limiting column (902) is matched with a notch ring (903) and is used for collecting petroleum and impurities in the pressure measuring shell (3).
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| CN114635687B CN114635687B (en) | 2022-07-26 |
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| CN117782258A (en) * | 2024-02-26 | 2024-03-29 | 山东亿格其工业自动化技术有限公司 | Liquid level transmitter with seal structure |
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| CN114635687B (en) | 2022-07-26 |
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Inventor after: Chen Gang Inventor after: Sun Weiwei Inventor after: Huang Tao Inventor after: Liu Naiyu Inventor after: Liu Kai Inventor after: Wang Chunsi Inventor after: Hao Chengpeng Inventor after: Zhao Jie Inventor after: Wang Qingli Inventor after: Chu Jiangsu Inventor before: Chen Gang Inventor before: Hao Chengpeng Inventor before: Zhao Jie Inventor before: Wang Qingli Inventor before: Chu Jiangsu Inventor before: Sun Weiwei Inventor before: Huang Tao Inventor before: Gao Chunxi Inventor before: Wang Shunbo Inventor before: E Jingtian Inventor before: Yu Jijun Inventor before: Liu Naiyu Inventor before: Liu Kai Inventor before: Wang Chunsi |