CN111504574A - PE ball valve detection device - Google Patents
PE ball valve detection device Download PDFInfo
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- CN111504574A CN111504574A CN202010361092.1A CN202010361092A CN111504574A CN 111504574 A CN111504574 A CN 111504574A CN 202010361092 A CN202010361092 A CN 202010361092A CN 111504574 A CN111504574 A CN 111504574A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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Abstract
The invention discloses a PE ball valve detection device, which relates to the technical field of detection devices and at least comprises a bottom plate, wherein two positioning brackets, a detection mechanism and a driving mechanism are arranged on the bottom plate, the two positioning brackets, the detection mechanism and the driving mechanism are all positioned on the same straight line, the detection mechanism can transversely move under the driving of the driving mechanism, and the upper parts of the two positioning brackets are respectively provided with a positioning bayonet for positioning a connecting arm of a ball valve; the detection mechanism comprises a front sealing plate, a positioning column, a rear sealing plate, a connecting rod and a limiting plate in sequence from front to back. The invention provides a PE ball valve detection device, which aims to solve the problems that the existing sealing gasket is used for extruding the end face of a ball valve for sealing, the ball valve is easy to deform, the test result is influenced, the test cavity is large, and the test precision is difficult to guarantee.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to a PE ball valve detection device.
Background
The PE ball valve is mainly used in a natural gas pipe network or an oil pipe network, the requirement on sealing performance is higher than that of a water valve, and inestimable loss can be caused if leakage occurs in the using process, so that before the PE ball valve leaves a factory, strict sealing performance detection is required, namely leakage detection test.
One of the detection items is a pressure maintaining test, which is divided into a single-cavity test and a whole-cavity test, wherein the single-cavity test is to rotate a ball valve of the ball valve to a closed state, seal a port at one end of the ball valve by using a sealing mechanism, charge air with a certain air pressure value into the ball valve at the side, stand for a period of time, and judge whether the cavity at the side of the ball valve has leakage by observing whether the air pressure is reduced; the whole cavity test is to rotate a ball valve ball to an open state, then seal ports at two ends of the ball valve by using a sealing mechanism, charge air with a certain air pressure value into the whole ball valve, stand for a period of time, and judge whether leakage exists in the whole cavity of the ball valve by observing whether the air pressure is reduced.
The existing detection device often uses a sealing gasket to extrude the end face of the ball valve to realize sealing, and because the PE ball valve is made of plastic, the sealing mode easily causes deformation of the ball valve and influences the test result, and the port is sealed, the cavity for testing is large, and the test precision is difficult to guarantee.
Disclosure of Invention
The invention provides a PE ball valve detection device, which aims to solve the problems that the existing sealing gasket is used for extruding the end face of a ball valve for sealing, the ball valve is easy to deform, the test result is influenced, the test cavity is large, and the test precision is difficult to guarantee.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PE ball valve detection device at least comprises a bottom plate, wherein two positioning supports, a detection mechanism and a driving mechanism are arranged on the bottom plate, the two positioning supports, the detection mechanism and the driving mechanism are all positioned on the same straight line, and the detection mechanism can move transversely under the driving of the driving mechanism;
a gap for accommodating the ball valve seat is reserved between the two positioning brackets, and the upper parts of the two positioning brackets are respectively provided with a positioning bayonet for positioning the ball valve connecting arm;
the detection mechanism comprises a rear sealing plate, a connecting rod and a limiting plate in sequence from front to back, the rear sealing plate and the limiting plate are fixed through the connecting rod, the front side face of the rear sealing plate is arranged towards the positioning support, the rear side face of the limiting plate is connected with the driving mechanism, the rear sealing plate is a circular plate, an O-shaped sealing ring used for sealing the inner wall of the ball valve is arranged on the circumferential side wall of the rear sealing plate, an inflation hole and a test hole are formed in the rear sealing plate in a penetrating mode, the inflation hole is connected with an external air source through an air pipe, and the test hole is connected with air pressure test equipment.
Preferably, the edge of the front side surface of the rear sealing plate is provided with a chamfer or a fillet which is convenient for the rear sealing plate to extend into the port of the ball valve.
Preferably, the driving mechanism is a driving cylinder, a cylinder body of the driving cylinder is fixed with the bottom plate through a positioning base, and a piston rod of the driving cylinder is fixed with the limiting plate.
Preferably, the bottom plate is provided with a thrust plate for preventing the ball valve from retreating, and the thrust plate is positioned on one side of the two positioning brackets away from the driving mechanism.
Preferably, the bottom plate is provided with a guide mechanism of the limiting plate, and the guide mechanism is a polished rod mechanism or a slide rail mechanism.
Preferably, the rear sealing plate is provided with a rear inflatable sealing ring and an inflatable mechanism for inflating the rear inflatable sealing ring, a rear sealing ring limiting groove for accommodating the rear inflatable sealing ring is annularly arranged on the circumferential side wall of the rear sealing plate, and the rear inflatable sealing ring is positioned in the rear sealing ring limiting groove;
the inflation mechanism comprises a small pressure cylinder, a large pressure cylinder, a support rod and a turnover rod, the small pressure cylinder, the large pressure cylinder and the support rod are all fixed on the rear side surface of the rear sealing plate, the support rod is positioned between the small pressure cylinder and the large pressure cylinder, and the distance between the small pressure cylinder and the support rod is larger than the distance between the large pressure cylinder and the support rod; the rear sealing plate is internally provided with a gas path channel a for communicating the inner cavity of the large pressure cylinder with the inner cavity of the rear inflatable sealing ring and a gas path channel b for communicating the inner cavity of the small pressure cylinder with the front side surface of the rear sealing plate;
the turning rod is hinged to the support rod, and the rotating axis of the turning rod is parallel to the rear side face of the rear sealing plate;
a piston a and a piston rod a connected with the piston a are arranged in the small pressure cylinder, the piston a is in sliding sealing fit with the inner wall of the small pressure cylinder, one end of the piston rod a is fixed with the piston a, the other end of the piston rod a is provided with a sliding shaft a, and the turnover rod is provided with a slide way a in sliding fit with the sliding shaft a;
the large pressure cylinder is internally provided with a piston b and a piston rod b connected with the piston b, the piston b is in sliding sealing fit with the inner wall of the large pressure cylinder, one end of the piston rod b is fixed with the piston b, the other end of the piston rod b is provided with a sliding shaft b, and the turnover rod is provided with a slide way b in sliding fit with the sliding shaft b.
Preferably, a compression spring for returning the piston b is provided in the high pressure cylinder.
A PE ball valve detection device at least comprises a bottom plate, wherein two positioning supports, a detection mechanism and a driving mechanism are arranged on the bottom plate, the two positioning supports, the detection mechanism and the driving mechanism are all positioned on the same straight line, and the detection mechanism can move transversely under the driving of the driving mechanism;
a gap for accommodating the ball valve seat is reserved between the two positioning brackets, and the upper parts of the two positioning brackets are respectively provided with a positioning bayonet for positioning the ball valve connecting arm;
the detection mechanism comprises a front sealing plate, a positioning column, a rear sealing plate, a connecting rod and a limiting plate in sequence from front to back, the front sealing plate and the rear sealing plate are fixed through the positioning column, the rear sealing plate and the limiting plate are fixed through the connecting rod, the front side face of the front sealing plate faces towards the positioning support, the rear side face of the limiting plate is connected with the driving mechanism, the front sealing plate and the rear sealing plate are circular plates and coaxially arranged, O-shaped sealing rings used for sealing the inner wall of the ball valve are arranged on the circumferential side walls of the front sealing plate and the rear sealing plate, an inflation hole and a test hole are formed in the rear sealing plate in a penetrating mode, the inflation hole is connected with an external air source through an air pipe, and the test hole is.
Preferably, the diameters of the front and rear sealing plates are the same.
Therefore, the invention has the following beneficial effects: 1. the inner cavity of the ball valve is sealed by adopting the inward-extending sealing plate, so that the ball valve cannot be extruded and deformed, and the testing precision is improved; 2. an inner cavity of the ball valve is sealed by adopting an inward-extending sealing plate, so that a test cavity is reduced, and the test precision is further improved; 3. be provided with inflatable seal circle, the leakproofness of further guarantee closing plate in the test procedure, and inflatable seal circle utilizes the test air supply to aerify the inflation, need not to set up inflatable air supply alone, and linkage nature is strong.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment.
FIG. 2 is a block diagram illustrating a test state according to an embodiment.
FIG. 3 is a schematic structural diagram illustrating an operating state of a positioning bracket according to an embodiment.
FIG. 4 is a schematic structural diagram of a detection mechanism according to an embodiment.
FIG. 5 is a sectional view of a detection mechanism according to one embodiment.
Fig. 6 is an enlarged view at a in fig. 5.
Fig. 7 is a schematic view of the structure in the direction of a-a in fig. 5.
Fig. 8 is a schematic structural diagram of the second embodiment.
FIG. 9 is a schematic structural diagram of a test state of the second embodiment.
Fig. 10 is a schematic structural view of a detection mechanism in the second embodiment.
FIG. 11 is a schematic view of the air passage communicating between the front inflatable sealing ring and the rear inflatable sealing ring in the second embodiment.
FIG. 12 is a schematic structural view of the third embodiment.
FIG. 13 is a schematic structural view of the rear side surface of the rear sealing plate in the third embodiment.
FIG. 14 is a sectional view of an inflator according to a third embodiment.
FIG. 15 is a schematic view showing the structures of an air passage d and an air passage e in the third embodiment.
FIG. 16 is a schematic structural view of the fourth embodiment.
1: a base plate; 2: positioning the bracket; 201: positioning the bayonet; 3: a detection mechanism; 301: a rear sealing plate; 302: a connecting rod; 303: a limiting plate; 304: an O-shaped sealing ring; 305: a rear inflatable seal ring; 306: a front sealing plate; 307: a positioning column; 308: a front inflatable seal ring; 4: a drive mechanism; 5: a positioning base; 6: a thrust plate; 7: a ball valve; 701: a valve seat; 702: a valve ball; 703: a connecting arm; 8: an inflation mechanism; 801: a small pressure cylinder; 802: a high pressure cylinder; 803: a strut; 804: a turning rod; 805: a piston a; 806: a piston rod a; 807: a slide shaft a; 808: a slideway a; 809: a piston b; 810: a piston rod b; 811: a slide shaft b; 812: a slideway b; 813: a compression spring; 814: a small arc cylinder; 815: a large arc-shaped cylinder; 816: a rotating shaft; 817: rotating the rod; 818: a piston c; 819: a small arc-shaped piston rod c; 820: a piston d; 821: a large arc-shaped piston rod d; 9: an inflation hole; 10: a test well; 11: a gas path channel a; 12: a gas path channel b; 13: a gas path channel c; 14: a gas path channel d; 15: and an air passage channel e.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example one
Referring to fig. 1 to 7, the PE ball valve detection device according to this embodiment at least includes a bottom plate 1, two positioning brackets 2, a detection mechanism 3, and a driving mechanism 4 are disposed on the bottom plate 1, the two positioning brackets 2, the detection mechanism 3, and the driving mechanism 4 are all located on the same straight line, and the detection mechanism 3 is driven by the driving mechanism 4 to move laterally.
A gap for accommodating the ball valve seat 701 is reserved between the two positioning supports 2, and the upper parts of the two positioning supports 2 are respectively provided with a positioning bayonet 201 for positioning the ball valve connecting arm 703.
The edge of the front side surface of the rear sealing plate 301 is provided with a chamfer or a fillet which is convenient for the rear sealing plate 301 to extend into the port of the ball valve 7.
The driving mechanism 4 is a driving cylinder, a cylinder body of the driving cylinder is fixed with the bottom plate 1 through a positioning base 5, and a piston rod of the driving cylinder is fixed with the limiting plate 303.
The bottom plate 1 is provided with a thrust plate 6 for preventing the ball valve 7 from retreating, and the thrust plate 6 is positioned on one side of the two positioning brackets 2 far away from the driving mechanism 4.
The bottom plate 1 is provided with a guide mechanism of the limiting plate 303, and the guide mechanism is a polished rod mechanism or a slide rail mechanism.
The rear sealing plate 301 is provided with a rear inflatable sealing ring 305 and an inflatable mechanism 8 for inflating the rear inflatable sealing ring 305, the circumferential side wall of the rear sealing plate 301 is annularly provided with a rear sealing ring limiting groove for accommodating the rear inflatable sealing ring 305, and the rear inflatable sealing ring 305 is located in the rear sealing ring limiting groove.
The inflation mechanism 8 comprises a small pressure cylinder 801, a large pressure cylinder 802, a supporting rod 803 and a turnover rod 804, wherein the small pressure cylinder 801, the large pressure cylinder 802 and the supporting rod 803 are all fixed on the rear side surface of the rear sealing plate 301, the supporting rod 803 is positioned between the small pressure cylinder 801 and the large pressure cylinder 802, and the distance between the small pressure cylinder 801 and the supporting rod 803 is larger than the distance between the large pressure cylinder 802 and the supporting rod 803; an air passage a11 for communicating the inner cavity of the large pressure cylinder 802 with the inner cavity of the rear inflating sealing ring 305 and an air passage b12 for communicating the inner cavity of the small pressure cylinder 801 with the front side surface of the rear sealing plate 301 are arranged in the rear sealing plate 301.
The turning rod 804 is hinged to the supporting rod 803, and the rotation axis of the turning rod 804 is parallel to the rear side surface of the rear sealing plate 301.
A piston a805 and a piston rod a806 connected with the piston a805 are arranged in the small pressure cylinder 801, the piston a805 is in sliding sealing fit with the inner wall of the small pressure cylinder 801, one end of the piston rod a806 is fixed with the piston a805, the other end of the piston rod a806 is provided with a sliding shaft a807, and the overturning rod 804 is provided with a slideway a808 in sliding fit with the sliding shaft a 807.
A piston b809 and a piston rod b810 connected with the piston b809 are arranged in the large pressure cylinder 802, the piston b809 is in sliding seal fit with the inner wall of the large pressure cylinder 802, one end of the piston rod b810 is fixed with the piston b809, the other end of the piston rod b810 is provided with a sliding shaft b811, and the turnover rod 804 is provided with a sliding way b812 in sliding fit with the sliding shaft b 811.
A compression spring 813 for returning the piston b809 is arranged in the high-pressure cylinder 802, and the compression spring 813 is positioned between the piston b809 and the rear sealing plate 301.
During testing, the ball valve 7 is positioned on the two positioning supports 2, the valve seat 701 is positioned between the two positioning supports 2, the connecting arms 703 at two sides of the ball valve 7 are respectively clamped on the positioning bayonets 201 of the two positioning supports 2, and then the ball valve 702 is rotated to a closed state.
The driving mechanism 4 is started, the detection mechanism 3 is pushed to move towards the port at one end of the ball valve 7, in the moving process of the detection mechanism 3, the rear sealing plate 301 of the detection mechanism 3 extends into the port at one end of the ball valve 7 until the limiting plate 303 is abutted against the end face of the ball valve 7, the whole detection mechanism 3 stops moving, sealing is achieved between the O-shaped sealing ring 304 on the rear sealing plate 301 and the inner hole wall of the connecting arm 703, and at the moment, a sealing test cavity is formed between the rear sealing plate 301 and the valve ball 702 inside the ball valve 7.
And starting an external air source, and inflating the air into the sealed test cavity through the inflation hole 9, so that the air pressure in the sealed test cavity reaches the air pressure value to be tested. Meanwhile, in the inflation process, gas in the sealed test cavity enters the inner cavity of the small pressure cylinder 801 through the gas passage b12, the air pressure in the inner cavity of the small pressure cylinder 801 increases to push the piston a805 to move upwards so as to drive the piston rod a806 to move upwards, in the upward moving process of the piston rod a806, the sliding shaft a807 on the piston rod a806 slides in the sliding way a808 on the turnover rod 804, meanwhile, the one end of the turnover rod 804 is lifted, the turnover rod 804 is in hinged fit with the supporting rod 803, one end of the turnover rod 804 is lifted, and the other end of the turnover rod 804 is lowered. The other end of the turning rod 804 descends, the sliding shaft b811 on the piston rod b810 slides in the sliding way b812 on the turning rod 804, the piston rod b810 is pressed downwards, the piston b809 is pushed downwards, the piston b809 moves to squeeze a cavity in the high-pressure cylinder 802, the air pressure in the high-pressure cylinder 802 rises, and the air enters the rear inflatable sealing ring 305 through the air passage a11, so that the rear inflatable sealing ring 305 expands until the rear inflatable sealing ring is attached to the inner hole wall of the connecting arm 703 to realize secondary sealing. Moreover, a principle of lever amplification is used, because the distance between the small pressure cylinder 801 and the support rod 803 is greater than the distance between the large pressure cylinder 802 and the support rod 803, the moment arm of the piston a805 is greater than the moment arm of the piston b809, when the piston a805 and the piston b809 reach balance and do not move, and under the condition that the diameters of the small pressure cylinder 801 and the large pressure cylinder 802 are the same, the force applied to the piston a805 is less than the force applied to the piston b809, that is, the air pressure value in the large pressure cylinder 802 is greater than the air pressure value in the small pressure cylinder 801, the further pushing-out is carried out, the air pressure value in the rear inflatable seal ring 305 is greater than the test air pressure in the sealed test cavity, so that the rear inflatable seal ring 305 can better seal the inner wall of the ball valve 7, and the test air pressure is increased, and the air pressure in the rear inflatable. The problem that the O-shaped sealing ring 304 cannot realize sealing due to overlarge testing air pressure is prevented.
When the air pressure in the sealing test cavity is filled to a value required by the test, and the piston a805 and the piston b809 are balanced and motionless, an external air source is cut off, and then the air pressure change condition in the sealing test cavity is monitored through the test hole 10 by using air pressure test equipment, so that whether the cavity on the side of the ball valve 7 leaks or not can be judged.
After the test is finished, the air pressure in the sealed test cavity is released through the air charging hole 9, the overturning rod 804 can be reversely overturned, the rear air charging sealing ring 305 can be shrunk until the rear air charging sealing ring is separated from the inner hole wall of the connecting arm 703, the detection mechanism 3 can be retracted, and the next round of test is prepared.
Example two
Referring to fig. 8 to 11, the PE ball valve detection device according to this embodiment at least includes a bottom plate 1, two positioning brackets 2, a detection mechanism 3, and a driving mechanism 4 are disposed on the bottom plate 1, the two positioning brackets 2, the detection mechanism 3, and the driving mechanism 4 are all located on the same straight line, and the detection mechanism 3 is driven by the driving mechanism 4 to move laterally.
A gap for accommodating the ball valve seat 701 is reserved between the two positioning supports 2, and the upper parts of the two positioning supports 2 are respectively provided with a positioning bayonet 201 for positioning the ball valve connecting arm 703.
The diameters of the front seal plate 306 and the rear seal plate 301 are the same.
The driving mechanism 4 is a driving cylinder, a cylinder body of the driving cylinder is fixed with the bottom plate 1 through a positioning base 5, and a piston rod of the driving cylinder is fixed with the limiting plate 303.
The bottom plate 1 is provided with a thrust plate 6 for preventing the ball valve 7 from retreating, and the thrust plate 6 is positioned on one side of the two positioning brackets 2 far away from the driving mechanism 4.
The bottom plate 1 is provided with a guide mechanism of the limiting plate 303, and the guide mechanism is a polished rod mechanism or a slide rail mechanism.
A front inflatable sealing ring 308 is arranged on the front sealing plate 306, and a rear inflatable sealing ring 305 and an inflating mechanism 8 for inflating the front inflatable sealing ring and the rear inflatable sealing ring are arranged on the rear sealing plate 301; a front sealing ring limiting groove for accommodating a front inflatable sealing ring 308 is annularly arranged on the circumferential side wall of the front sealing plate 306, and the front inflatable sealing ring 308 is positioned in the front sealing ring limiting groove; a rear sealing ring limiting groove for accommodating a rear inflatable sealing ring 305 is annularly arranged on the circumferential side wall of the rear sealing plate 301, and the rear inflatable sealing ring 305 is positioned in the rear sealing ring limiting groove; an air passage c13 for communicating the front inflatable sealing ring 308 and the rear inflatable sealing ring 305 is arranged in the front sealing plate 306, the positioning column 307 and the rear sealing plate 301.
The inflation mechanism 8 comprises a small pressure cylinder 801, a large pressure cylinder 802, a supporting rod 803 and a turnover rod 804, wherein the small pressure cylinder 801, the large pressure cylinder 802 and the supporting rod 803 are all fixed on the rear side surface of the rear sealing plate 301, the supporting rod 803 is positioned between the small pressure cylinder 801 and the large pressure cylinder 802, and the distance between the small pressure cylinder 801 and the supporting rod 803 is larger than the distance between the large pressure cylinder 802 and the supporting rod 803; an air passage a11 for communicating the inner cavity of the large pressure cylinder 802 with the inner cavity of the rear inflating sealing ring 305 and an air passage b12 for communicating the inner cavity of the small pressure cylinder 801 with the front side surface of the rear sealing plate 301 are arranged in the rear sealing plate 301.
The turning rod 804 is hinged to the supporting rod 803, and the rotation axis of the turning rod 804 is parallel to the rear side surface of the rear sealing plate 301.
A piston a805 and a piston rod a806 connected with the piston a805 are arranged in the small pressure cylinder 801, the piston a805 is in sliding sealing fit with the inner wall of the small pressure cylinder 801, one end of the piston rod a806 is fixed with the piston a805, the other end of the piston rod a806 is provided with a sliding shaft a807, and the overturning rod 804 is provided with a slideway a808 in sliding fit with the sliding shaft a 807.
A piston b809 and a piston rod b810 connected with the piston b809 are arranged in the large pressure cylinder 802, the piston b809 is in sliding seal fit with the inner wall of the large pressure cylinder 802, one end of the piston rod b810 is fixed with the piston b809, the other end of the piston rod b810 is provided with a sliding shaft b811, and the turnover rod 804 is provided with a sliding way b812 in sliding fit with the sliding shaft b 811.
A compression spring 813 for returning the piston b809 is arranged in the high-pressure cylinder 802, and the compression spring 813 is positioned between the piston b809 and the rear sealing plate 301.
During testing, the ball valve 7 is positioned on the two positioning supports 2, the valve seat 701 is positioned between the two positioning supports 2, the connecting arms 703 at two sides of the ball valve 7 are respectively clamped on the positioning bayonets 201 of the two positioning supports 2, and then the ball valve 702 is rotated to an open state.
Starting the driving mechanism 4, pushing the detection mechanism 3 to move towards one end port of the ball valve 7, in the moving process of the detection mechanism 3, the front sealing plate 306 and the rear sealing plate 301 of the detection mechanism 3 sequentially extend into the ball valve 7 from one end port thereof until the limiting plate 303 is abutted against the side end face of the ball valve 7, the whole detection mechanism 3 stops moving, and the sealing between the O-shaped sealing ring 304 on the front sealing plate 306 and the rear sealing plate 301 and the inner hole wall of the connecting arm 703 is realized, at this moment, the front sealing plate 306 and the rear sealing plate 301 are respectively positioned at two sides of the valve ball 702, and a sealing test cavity is formed between the front sealing plate 306 and the rear sealing plate 301 inside the.
And starting an external air source, and inflating the air into the sealed test cavity through the inflation hole 9, so that the air pressure in the sealed test cavity reaches the air pressure value to be tested. Meanwhile, in the inflation process, gas in the sealed test cavity enters the inner cavity of the small pressure cylinder 801 through the gas passage b12, the air pressure in the inner cavity of the small pressure cylinder 801 increases to push the piston a805 to move upwards so as to drive the piston rod a806 to move upwards, in the upward moving process of the piston rod a806, the sliding shaft a807 on the piston rod a806 slides in the sliding way a808 on the turnover rod 804, meanwhile, the one end of the turnover rod 804 is lifted, the turnover rod 804 is in hinged fit with the supporting rod 803, one end of the turnover rod 804 is lifted, and the other end of the turnover rod 804 is lowered. The other end of the turning rod 804 descends, the sliding shaft b811 on the piston rod b810 slides in the sliding way b812 on the turning rod 804, the piston rod b810 is pressed downwards, the piston b809 is pushed downwards, the piston b809 moves to extrude the cavity in the high-pressure cylinder 802, the air pressure in the high-pressure cylinder 802 rises, the air enters the rear inflatable sealing ring 305 through the air passage a11, the rear inflatable sealing ring 305 expands, meanwhile, the air enters the front inflatable sealing ring 308 through the air passage c13, the front inflatable sealing ring 308 expands until the two inflatable sealing rings are attached to the inner hole walls of the connecting arms 703 on the two sides, and secondary sealing is achieved. And, here, the principle of lever amplification is used, since the distance between the small pressure cylinder 801 and the supporting rod 803 is larger than the distance between the large pressure cylinder 802 and the supporting rod 803, therefore, the moment arm of the piston a805 is larger than that of the piston b809, and when the piston a805 and the piston b809 reach the balance and are not in motion, in the case where the small pressure cylinder 801 and the large pressure cylinder 802 have the same cylinder diameter, the force received by the piston a805 is smaller than the force received by the piston b809, that is, the air pressure value in the large pressure cylinder 802 is greater than the air pressure value in the small pressure cylinder 801, and further, the air pressure values in the front inflatable seal ring 308 and the rear inflatable seal ring 305 are greater than the testing air pressure in the sealed testing cavity, so that the front inflating seal ring 308 and the rear inflating seal ring 305 can better seal the inner wall of the ball valve 7, and the pressure of the air in the front inflatable seal 308 and the rear inflatable seal 305 increases. The problem that the O-shaped sealing ring 304 cannot realize sealing due to overlarge testing air pressure is prevented.
When the air pressure in the sealing test cavity is filled to a value required by the test, and the piston a805 and the piston b809 are balanced and motionless, an external air source is cut off, and then the air pressure change condition in the sealing test cavity is monitored through the test hole 10 by using air pressure test equipment, so that whether the whole cavity of the ball valve 7 leaks or not can be judged.
After the test is finished, the air pressure in the sealed test cavity is released through the air charging hole 9, the overturning rod 804 can be reversely overturned, the front air charging sealing ring 308 and the rear air charging sealing ring 305 can be shrunk until the front air charging sealing ring and the rear air charging sealing ring are separated from the inner hole wall of the connecting arm 703, the detection mechanism 3 can be retracted, and the next round of test is prepared.
EXAMPLE III
Referring to fig. 12 to 15, the PE ball valve detection device according to this embodiment at least includes a bottom plate 1, two positioning brackets 2, a detection mechanism 3, and a driving mechanism 4 are disposed on the bottom plate 1, the two positioning brackets 2, the detection mechanism 3, and the driving mechanism 4 are all located on the same straight line, and the detection mechanism 3 is driven by the driving mechanism 4 to move laterally.
A gap for accommodating the ball valve seat 701 is reserved between the two positioning supports 2, and the upper parts of the two positioning supports 2 are respectively provided with a positioning bayonet 201 for positioning the ball valve connecting arm 703.
The edge of the front side surface of the rear sealing plate 301 is provided with a chamfer or a fillet which is convenient for the rear sealing plate 301 to extend into the port of the ball valve 7.
The driving mechanism 4 is a driving cylinder, a cylinder body of the driving cylinder is fixed with the bottom plate 1 through a positioning base 5, and a piston rod of the driving cylinder is fixed with the limiting plate 303.
The bottom plate 1 is provided with a thrust plate 6 for preventing the ball valve 7 from retreating, and the thrust plate 6 is positioned on one side of the two positioning brackets 2 far away from the driving mechanism 4.
The bottom plate 1 is provided with a guide mechanism of the limiting plate 303, and the guide mechanism is a polished rod mechanism or a slide rail mechanism.
The rear sealing plate 301 is provided with a rear inflatable sealing ring 305 and an inflatable mechanism 8 for inflating the rear inflatable sealing ring 305, the circumferential side wall of the rear sealing plate 301 is annularly provided with a rear sealing ring limiting groove for accommodating the rear inflatable sealing ring 305, and the rear inflatable sealing ring 305 is located in the rear sealing ring limiting groove.
The inflation mechanism 8 comprises a small arc cylinder 814, a large arc cylinder 815, a rotating shaft 816 and a rotating rod 817, wherein the small arc cylinder 814, the large arc cylinder 815 and the rotating shaft 816 are all positioned on the rear side surface of the rear sealing plate 301, the rotating shaft 816 can rotate and the rotating axis is vertical to the rear side surface of the rear sealing plate 301, the rotating rod 817 is positioned on the rotating shaft 816 and can rotate along with the rotating shaft 816, the small arc cylinder 814 and the large arc cylinder 815 are sequentially arranged outwards by taking the rotating shaft 816 as the center, and the circle center of the small arc cylinder 814 and the circle center of the large arc cylinder 815 are both positioned on the central axis of the rotating shaft 816; a piston c818 and a small arc-shaped piston rod c819 connected with the piston c818 are arranged in the small arc-shaped cylinder 814, a piston d820 and a large arc-shaped piston rod d821 connected with the piston d820 are arranged in the large arc-shaped cylinder 815, the small arc-shaped piston rod c819 and the large arc-shaped piston rod d821 are arranged in a reverse direction and extend out of one end of the corresponding cylinder body, and the other ends of the small arc-shaped piston rod c819 and the large arc-shaped piston rod d821 are fixed to two ends of the rotating rod 817 respectively.
One end of the small arc-shaped cylinder 814, which does not extend out of the small arc-shaped piston rod c819, is communicated with the inner cavity of the rear inflating sealing ring 305 through a gas passage d 14.
One end of the large arc cylinder 815, which does not extend out of the large arc piston rod d821, is communicated with the front side surface of the rear sealing plate 301 through an air passage e 15.
During testing, the ball valve 7 is positioned on the two positioning supports 2, the valve seat 701 is positioned between the two positioning supports 2, the connecting arms 703 at two sides of the ball valve 7 are respectively clamped on the positioning bayonets 201 of the two positioning supports 2, and then the ball valve 702 is rotated to a closed state.
The driving mechanism 4 is started, the detection mechanism 3 is pushed to move towards the port at one end of the ball valve 7, in the moving process of the detection mechanism 3, the rear sealing plate 301 of the detection mechanism 3 extends into the port at one end of the ball valve 7 until the limiting plate 303 is abutted against the end face of the ball valve 7, the whole detection mechanism 3 stops moving, sealing is achieved between the O-shaped sealing ring 304 on the rear sealing plate 301 and the inner hole wall of the connecting arm 703, and at the moment, a sealing test cavity is formed between the rear sealing plate 301 and the valve ball 702 inside the ball valve 7.
And starting an external air source, and inflating the air into the sealed test cavity through the inflation hole 9, so that the air pressure in the sealed test cavity reaches the air pressure value to be tested. Meanwhile, in the process of inflation, gas in the sealing test cavity enters a cavity at one end, which does not extend out of the large arc-shaped piston rod d821, of the large arc-shaped cylinder 815 through the gas passage e15, so as to push the piston d820 to move, and because the center of the small arc-shaped cylinder 814 and the center of the large arc-shaped cylinder 815 are both located on the central axis of the rotating shaft 816, the moving tracks of the piston d820 and the piston c818 are both arc-shaped tracks taking the rotating shaft 816 as the center of the circle. The piston d820 moves and is driven by the large arc-shaped piston rod d821 to push the rotating rod 817 to rotate, and the other end of the rotating rod 817 is driven by the small arc-shaped piston rod c819 to push the piston c818 to move. During the movement of the piston c818, the cavity at one end of the small arc-shaped cylinder 814, which does not extend out of the small arc-shaped piston rod c819, is compressed, and the compressed cavity is communicated with the rear inflating seal ring 305 through the air passage d14, so that the rear inflating seal ring 305 is compressed and expanded to be attached to the inner hole wall of the connecting arm 703 to realize secondary sealing. Moreover, the inflation mechanism 8 utilizes the lever principle, when the piston d820 and the piston c818 reach a balance and do not move, because the small arc-shaped cylinder 814 is closer to the rotating shaft 816, the moment arm of the piston c818 is smaller than that of the piston d820, and the piston c818 receives a larger force than that of the piston d820, under the condition that the diameters of the small arc-shaped cylinder 814 and the large arc-shaped cylinder 815 are the same, it can be further known that the air pressure in the cavity at the end, where the small arc-shaped cylinder 814 does not extend out of the small arc-shaped piston rod c819, of the small arc-shaped cylinder 814 is larger than the air pressure in the cavity at the end, where the large arc-shaped cylinder 815 does not extend out of the large arc-shaped piston rod d821, that is, the air pressure in the post-inflation. And the test air pressure increases, the air pressure in the rear inflatable seal 305 also increases. The problem that the O-shaped sealing ring 304 cannot realize sealing due to overlarge testing air pressure is prevented.
When the air pressure in the sealing test cavity is filled to a value required by the test, and the piston d820 and the piston c818 are balanced and motionless, an external air source is cut off, and then the air pressure change condition in the sealing test cavity is monitored through the test hole 10 by using air pressure test equipment, so that whether the cavity on the side of the ball valve 7 leaks or not can be judged.
After the test is finished, the air pressure in the sealed test cavity is released through the air charging hole 9, the rotating rod 817 reversely rotates, the rear air charging sealing ring 305 is shrunk until the rear air charging sealing ring is separated from the inner hole wall of the connecting arm 703, the detection mechanism 3 can be retracted, and the next round of test is prepared.
Example four
Referring to fig. 16, the PE ball valve detection device according to this embodiment at least includes a bottom plate 1, two positioning brackets 2, a detection mechanism 3, and a driving mechanism 4 are disposed on the bottom plate 1, the two positioning brackets 2, the detection mechanism 3, and the driving mechanism 4 are all located on the same straight line, and the detection mechanism 3 is driven by the driving mechanism 4 to move laterally.
A gap for accommodating the ball valve seat 701 is reserved between the two positioning supports 2, and the upper parts of the two positioning supports 2 are respectively provided with a positioning bayonet 201 for positioning the ball valve connecting arm 703.
The diameters of the front seal plate 306 and the rear seal plate 301 are the same.
The driving mechanism 4 is a driving cylinder, a cylinder body of the driving cylinder is fixed with the bottom plate 1 through a positioning base 5, and a piston rod of the driving cylinder is fixed with the limiting plate 303.
The bottom plate 1 is provided with a thrust plate 6 for preventing the ball valve 7 from retreating, and the thrust plate 6 is positioned on one side of the two positioning brackets 2 far away from the driving mechanism 4.
The bottom plate 1 is provided with a guide mechanism of the limiting plate 303, and the guide mechanism is a polished rod mechanism or a slide rail mechanism.
A front inflatable sealing ring 308 is arranged on the front sealing plate 306, and a rear inflatable sealing ring 305 and an inflating mechanism 8 for inflating the front inflatable sealing ring and the rear inflatable sealing ring are arranged on the rear sealing plate 301; a front sealing ring limiting groove for accommodating a front inflatable sealing ring 308 is annularly arranged on the circumferential side wall of the front sealing plate 306, and the front inflatable sealing ring 308 is positioned in the front sealing ring limiting groove; a rear sealing ring limiting groove for accommodating a rear inflatable sealing ring 305 is annularly arranged on the circumferential side wall of the rear sealing plate 301, and the rear inflatable sealing ring 305 is positioned in the rear sealing ring limiting groove; an air passage c13 for communicating the front inflatable sealing ring 308 and the rear inflatable sealing ring 305 is arranged in the front sealing plate 306, the positioning column 307 and the rear sealing plate 301.
The inflation mechanism 8 comprises a small arc cylinder 814, a large arc cylinder 815, a rotating shaft 816 and a rotating rod 817, wherein the small arc cylinder 814, the large arc cylinder 815 and the rotating shaft 816 are all positioned on the rear side surface of the rear sealing plate 301, the rotating shaft 816 can rotate and the rotating axis is vertical to the rear side surface of the rear sealing plate 301, the rotating rod 817 is positioned on the rotating shaft 816 and can rotate along with the rotating shaft 816, the small arc cylinder 814 and the large arc cylinder 815 are sequentially arranged outwards by taking the rotating shaft 816 as the center, and the circle center of the small arc cylinder 814 and the circle center of the large arc cylinder 815 are both positioned on the central axis of the rotating shaft 816; a piston c818 and a small arc-shaped piston rod c819 connected with the piston c818 are arranged in the small arc-shaped cylinder 814, a piston d820 and a large arc-shaped piston rod d821 connected with the piston d820 are arranged in the large arc-shaped cylinder 815, the small arc-shaped piston rod c819 and the large arc-shaped piston rod d821 are arranged in a reverse direction and extend out of one end of the corresponding cylinder body, and the other ends of the small arc-shaped piston rod c819 and the large arc-shaped piston rod d821 are fixed to two ends of the rotating rod 817 respectively.
One end of the small arc-shaped cylinder 814, which does not extend out of the small arc-shaped piston rod c819, is communicated with the inner cavity of the rear inflating sealing ring 305 through a gas passage d 14.
One end of the large arc cylinder 815, which does not extend out of the large arc piston rod d821, is communicated with the front side surface of the rear sealing plate 301 through an air passage e 15.
During testing, the ball valve 7 is positioned on the two positioning supports 2, the valve seat 701 is positioned between the two positioning supports 2, the connecting arms 703 at two sides of the ball valve 7 are respectively clamped on the positioning bayonets 201 of the two positioning supports 2, and then the ball valve 702 is rotated to an open state.
Starting the driving mechanism 4, pushing the detection mechanism 3 to move towards one end port of the ball valve 7, in the moving process of the detection mechanism 3, the front sealing plate 306 and the rear sealing plate 301 of the detection mechanism 3 sequentially extend into the ball valve 7 from one end port thereof until the limiting plate 303 is abutted against the side end face of the ball valve 7, the whole detection mechanism 3 stops moving, and the sealing between the O-shaped sealing ring 304 on the front sealing plate 306 and the rear sealing plate 301 and the inner hole wall of the connecting arm 703 is realized, at this moment, the front sealing plate 306 and the rear sealing plate 301 are respectively positioned at two sides of the valve ball 702, and a sealing test cavity is formed between the front sealing plate 306 and the rear sealing plate 301 inside the.
And starting an external air source, and inflating the air into the sealed test cavity through the inflation hole 9, so that the air pressure in the sealed test cavity reaches the air pressure value to be tested. Meanwhile, in the process of inflation, gas in the sealing test cavity enters a cavity at one end, which does not extend out of the large arc-shaped piston rod d821, of the large arc-shaped cylinder 815 through the gas passage e15, so as to push the piston d820 to move, and because the center of the small arc-shaped cylinder 814 and the center of the large arc-shaped cylinder 815 are both located on the central axis of the rotating shaft 816, the moving tracks of the piston d820 and the piston c818 are both arc-shaped tracks taking the rotating shaft 816 as the center of the circle. The piston d820 moves and is driven by the large arc-shaped piston rod d821 to push the rotating rod 817 to rotate, and the other end of the rotating rod 817 is driven by the small arc-shaped piston rod c819 to push the piston c818 to move. In the moving process of the piston c818, the cavity at one end of the small arc-shaped cylinder 814, which does not extend out of the small arc-shaped piston rod c819, is compressed, and the compressed cavity is communicated with the rear inflatable sealing ring 305 through the air passage d14, so that the rear inflatable sealing ring 305 is pressurized and expanded, and meanwhile, the rear inflatable sealing ring enters the front inflatable sealing ring 308 through the air passage c13, so that the front inflatable sealing ring 308 is expanded until the two inflatable sealing rings are attached to the inner hole walls of the connecting arms 703 at the two sides to realize secondary sealing. Moreover, the inflation mechanism 8 utilizes the lever principle, when the piston d820 and the piston c818 reach a balance and do not move, because the small arc-shaped cylinder 814 is closer to the rotating shaft 816, the moment arm of the piston c818 is smaller than that of the piston d820, and the piston c818 receives a larger force than that of the piston d820, under the condition that the diameters of the small arc-shaped cylinder 814 and the large arc-shaped cylinder 815 are the same, it can be further known that the air pressure in the cavity at the end, where the small arc-shaped cylinder 814 does not extend out of the small arc-shaped piston rod c819, of the small arc-shaped cylinder 814 is larger than the air pressure in the cavity at the end, where the large arc-shaped cylinder 815 does not extend out of the large arc-shaped piston rod d821, that is, the air pressures in the front inflation sealing ring 308 and the rear. And the pressure of the air in the front inflatable seal 308 and the rear inflatable seal 305 increases. The problem that the O-shaped sealing ring 304 cannot realize sealing due to overlarge testing air pressure is prevented.
When the air pressure in the sealing test cavity is filled to a value required by the test, and the piston d820 and the piston c818 are balanced and motionless, an external air source is cut off, and then the air pressure change condition in the sealing test cavity is monitored through the test hole 10 by using air pressure test equipment, so that whether the whole cavity of the ball valve 7 leaks or not can be judged.
After the test is finished, the air pressure in the sealed test cavity is released through the air charging hole 9, the rotating rod 817 reversely rotates, the front air charging sealing ring 308 and the rear air charging sealing ring 305 shrink until being separated from the inner hole wall of the connecting arm 703, and the detection mechanism 3 can be retracted to prepare for the next round of test.
Claims (5)
1. The utility model provides a PE ball valve detection device which characterized in that: the device comprises at least one bottom plate (1), wherein two positioning brackets (2), a detection mechanism (3) and a driving mechanism (4) are arranged on the bottom plate (1), the two positioning brackets (2), the detection mechanism (3) and the driving mechanism (4) are all positioned on the same straight line, and the detection mechanism (3) can move transversely under the driving of the driving mechanism (4);
a gap for accommodating the ball valve seat (701) is reserved between the two positioning supports (2), and positioning bayonets (201) for positioning the ball valve connecting arm (703) are arranged at the upper parts of the two positioning supports (2);
the detection mechanism (3) sequentially comprises a front sealing plate (306), a positioning column (307), a rear sealing plate (301), a connecting rod (302) and a limiting plate (303) from front to back, the front sealing plate (306) and the rear sealing plate (301) are fixed through the positioning column (307), the rear sealing plate (301) and the limiting plate (303) are fixed through the connecting rod (302), the front side surface of the front sealing plate (306) is arranged towards the positioning support (2), the rear side surface of the limiting plate (303) is connected with the driving mechanism (4), the front sealing plate (306) and the rear sealing plate (301) are both circular plates and are coaxially arranged, O-shaped sealing rings (304) used for sealing the inner wall of the ball valve (7) are arranged on the circumferential side walls of the front sealing plate (306) and the rear sealing plate (301), and an inflation hole (9) and a test hole (10) are arranged on the rear sealing plate (301) in a way, the air inflation hole (9) is connected with an external air source through an air pipe, and the test hole (10) is connected with air pressure test equipment through the air pipe;
a front inflatable sealing ring (308) is arranged on the front sealing plate (306), and a rear inflatable sealing ring (305) and an inflating mechanism (8) for inflating the front and rear inflatable sealing rings are arranged on the rear sealing plate (301); a front sealing ring limiting groove used for containing a front inflatable sealing ring (308) is annularly arranged on the circumferential side wall of the front sealing plate (306), and the front inflatable sealing ring (308) is positioned in the front sealing ring limiting groove; a rear sealing ring limiting groove used for containing a rear inflation sealing ring (305) is annularly arranged on the circumferential side wall of the rear sealing plate (301), and the rear inflation sealing ring (305) is positioned in the rear sealing ring limiting groove; the front sealing plate (306), the positioning column (307) and the rear sealing plate (301) are internally provided with an air passage channel c (13) for communicating a front inflatable sealing ring (308) with a rear inflatable sealing ring (305);
the inflation mechanism (8) comprises a small arc-shaped cylinder (814), a large arc-shaped cylinder (815), a rotating shaft (816) and a rotating rod (817), the small arc-shaped cylinder (814), the large arc-shaped cylinder (815) and the rotating shaft (816) are all positioned on the rear side surface of the rear sealing plate (301), the rotating shaft (816) can rotate automatically, the rotating axis is perpendicular to the rear side surface of the rear sealing plate (301), the rotating rod (817) is positioned on the rotating shaft (816) and can rotate along with the rotating shaft (816), the small arc-shaped cylinder (814) and the large arc-shaped cylinder (815) are sequentially arranged outwards by taking the rotating shaft (816) as the center, and the circle center of the small arc-shaped cylinder (814) and the circle center of the large arc-shaped cylinder (815) are both positioned on the central axis of the rotating shaft; a piston c (818) and a small arc-shaped piston rod c (819) connected with the piston c (818) are arranged in the small arc-shaped cylinder (814), a piston d (820) and a large arc-shaped piston rod d (821) connected with the piston d (820) are arranged in the large arc-shaped cylinder (815), the small arc-shaped piston rod c (819) and the large arc-shaped piston rod d (821) are arranged in a reverse direction and extend out of one end of the corresponding cylinder body, and the other ends of the small arc-shaped piston rod c (819) and the large arc-shaped piston rod d (821) are fixed to two ends of the rotating rod (817) respectively;
one end of the small arc-shaped cylinder (814), which does not extend out of the small arc-shaped piston rod c (819), is communicated with the inner cavity of the rear inflatable sealing ring (305) through an air passage d (14);
one end of the large arc-shaped cylinder (815), which does not extend out of the large arc-shaped piston rod d (821), is communicated with the front side surface of the rear sealing plate (301) through an air passage e (15).
2. The PE ball valve detection device of claim 1, wherein: the diameters of the front sealing plate (306) and the rear sealing plate (301) are the same.
3. The PE ball valve detection device of claim 1, wherein: the driving mechanism (4) is a driving cylinder, the cylinder body of the driving cylinder is fixed with the bottom plate (1) through a positioning base (5), and the piston rod of the driving cylinder is fixed with the limiting plate (303).
4. The PE ball valve detection device of claim 1, wherein: the anti-backlash mechanism is characterized in that a thrust plate (6) used for preventing the ball valve (7) from retreating is arranged on the bottom plate (1), and the thrust plate (6) is located on one side, away from the driving mechanism (4), of the two positioning supports (2).
5. The PE ball valve detection device of claim 1, wherein: the bottom plate (1) is provided with a guide mechanism of the limiting plate (303), and the guide mechanism is a polished rod mechanism or a sliding rail mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010361092.1A CN111504574A (en) | 2019-01-30 | 2019-01-30 | PE ball valve detection device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090857.XA CN109540420B (en) | 2019-01-30 | 2019-01-30 | PE ball valve detection device |
| CN202010361092.1A CN111504574A (en) | 2019-01-30 | 2019-01-30 | PE ball valve detection device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910090857.XA Division CN109540420B (en) | 2019-01-30 | 2019-01-30 | PE ball valve detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111504574A true CN111504574A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010361092.1A Withdrawn CN111504574A (en) | 2019-01-30 | 2019-01-30 | PE ball valve detection device |
| CN201910090857.XA Active CN109540420B (en) | 2019-01-30 | 2019-01-30 | PE ball valve detection device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910090857.XA Active CN109540420B (en) | 2019-01-30 | 2019-01-30 | PE ball valve detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432743A (en) * | 2020-11-05 | 2021-03-02 | 徐州阿卡控制阀门有限公司 | Installation and test fixture of ball valve |
| CN114563143A (en) * | 2022-03-08 | 2022-05-31 | 苏州协同创新智能制造装备有限公司 | Double-station air tightness detection method for ball valve |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115307835A (en) * | 2022-10-10 | 2022-11-08 | 江苏新恒基特种装备股份有限公司 | Corrugated pipe helium leakage detection test device |
| CN117450318B (en) * | 2023-11-02 | 2024-07-26 | 南通市红星空压机配件制造有限公司 | Valve opening pressure detection equipment and detection method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181273A (en) * | 2015-09-11 | 2015-12-23 | 王国良 | Ball valve detection equipment |
| CN206177535U (en) * | 2016-06-22 | 2017-05-17 | 海门市苍云机械有限公司 | A gas tightness test equipment for valve |
| CN206177534U (en) * | 2016-06-22 | 2017-05-17 | 海门市苍云机械有限公司 | Detection frock of PE valve |
| CN207019850U (en) * | 2017-06-01 | 2018-02-16 | 陈永杰 | A kind of automatic air tightness testing equipment |
-
2019
- 2019-01-30 CN CN202010361092.1A patent/CN111504574A/en not_active Withdrawn
- 2019-01-30 CN CN201910090857.XA patent/CN109540420B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432743A (en) * | 2020-11-05 | 2021-03-02 | 徐州阿卡控制阀门有限公司 | Installation and test fixture of ball valve |
| CN114563143A (en) * | 2022-03-08 | 2022-05-31 | 苏州协同创新智能制造装备有限公司 | Double-station air tightness detection method for ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109540420A (en) | 2019-03-29 |
| CN109540420B (en) | 2021-01-29 |
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