CN113916470A - Large-scale valve gas tightness detection device - Google Patents
Large-scale valve gas tightness detection device Download PDFInfo
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- CN113916470A CN113916470A CN202111267518.8A CN202111267518A CN113916470A CN 113916470 A CN113916470 A CN 113916470A CN 202111267518 A CN202111267518 A CN 202111267518A CN 113916470 A CN113916470 A CN 113916470A
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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 large-scale valve airtightness detection device which comprises a base, a pressurizing cylinder and stand columns, wherein the stand columns are arranged at four corners above the base, a pressure gauge and the pressurizing cylinder are respectively arranged at the left side and the right side above the base, a lead screw is arranged at the horizontal central line above the base, a lead screw lower bearing bush and a lead screw upper bearing bush are arranged at two ends of the lead screw, two dovetail-shaped guide rails are arranged at two sides of the lead screw, two identical sliding block mechanisms are arranged above the dovetail-shaped guide rails, a claw sealing mechanism is arranged above the sliding block mechanisms, a top plate is arranged above the stand columns, and a steering mechanism is arranged at the central position of the top plate. This design only need provide less power and just can obtain great pressure, has solved the too high defect of requirement to pressure providing equipment, can use the machine to rotate the valve when detecting valve opposite side gas tightness, reduces the manpower and improves efficiency to can adjust according to the length of valve, detect the valve of certain length within range, the testing result is more accurate.
Description
Technical Field
The invention relates to the field of valve detection, in particular to a large-scale valve airtightness detection device.
Background
At present, the valve is widely applied to various fields, and the requirement on the air tightness of the valve is extremely high, so that the air tightness item needs to be detected before the valve leaves a factory so as to ensure that the air tightness of the product is qualified. The air tightness detection of the large valves at present mostly adopts a water immersion method, and the method has low precision.
Furthermore, the method for connecting the valve to the detection equipment includes that the valve is manually connected to the detection equipment by using bolts, the method is time-consuming and labor-consuming, or the two ends of the valve are pressed on the equipment by using screw transmission, a hydraulic structure and the like to detect air tightness, for example, the publication No. CN111220330A discloses air tightness monitoring equipment, the disclosed technical scheme adopts screw transmission of a lead screw nut to press and seal the two ends of the valve, and the method needs to provide larger pressure and has higher requirement on pressure providing equipment.
Meanwhile, when the airtightness of the other side of the valve is detected, the valve needs to be manually dismounted, turned around and remounted, for example, in the technical scheme disclosed by the airtightness monitoring equipment with the publication number of CN111220330A and the airtightness detection device with the publication number of CN210464812U, no corresponding turning mechanism exists, the valve can be manually dismounted, turned around and remounted for detection, and the detection is time-consuming and labor-consuming for large valves and low in efficiency. In addition, the problem that the detection equipment cannot be properly adjusted according to the length of the valve exists.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a large-scale valve airtightness detection device.
The invention solves the technical problem by adopting the technical scheme that the air tightness detection device for the large-scale valve comprises a base, a pressurizing cylinder and upright columns, wherein four corners above the base are connected with four upright columns through bolts, the axes of the upright columns are vertical to the plane of the base, the boundaries of the left side and the right side above the base are respectively provided with a pressure gauge and the pressurizing cylinder, the left end and the right end of the horizontal center line above the base are respectively connected with a lower lead screw bearing bush through bolts, a freely rotatable lead screw is arranged at the coaxial line position above the lower lead screw bearing bush, an upper lead screw bearing bush is arranged at the coaxial line position right above the lead screw, the upper lead screw bearing bush is connected with the lower lead screw bearing bush through bolts, a polish rod of the lead screw is tightly attached to the inner walls of the upper lead screw bearing bush and the lower lead screw bearing bush, a lead screw motor is arranged at the boundary of the right side above the base, the axis of an output shaft of the lead screw motor is coincided with the axis of the lead screw and is connected through a coupler, the valve body to be tested is placed above a V-shaped opening of a sliding block in the sliding block mechanism, a top plate parallel to the plane of the base is connected to the upper portion of the upright post through a bolt, a top plate supporting hole is machined in the center of the top plate, a steering mechanism is arranged in the top plate supporting hole, and the steering mechanism can rotate in the top plate supporting hole.
The slide block mechanism comprises a slide block, a claw sealing mechanism motor support, two slide block dovetail guide rail grooves, a slide block V-shaped opening, a round guide pillar support and a slide block threaded hole, a slide block parallel to the horizontal plane is arranged below the slide block mechanism, two slide block dovetail guide rail grooves parallel to each other are processed in the transverse line direction below the slide block, the two slide block dovetail guide rail grooves are connected with the two dovetail guide rails in a sliding way, a slide block threaded hole is arranged in the position in the transverse line direction in the middle of the two slide block dovetail guide rail grooves, the threaded hole of the slide block is the same as the axis of the lead screw and is in spiral fit, one side of the slide block mechanism is provided with a slide block V-shaped opening vertical to the slide block plane, a circular guide post bracket vertical to the plane of the slide block is arranged on the left side of the V-shaped opening of the slide block in the vertical direction, and a claw sealing mechanism motor support positioned above the sliding block is arranged on the other side of the sliding block mechanism.
The hook claw sealing mechanism comprises four hook claws, four hook claw support rods, four connecting rods, a circular sliding block, a limiting column, an outer trachea interface, a sealing push plate rack, a hook claw sealing mechanism gear, a circular sliding block rack, four hook claw rubber heads, a sealing push plate rubber sealing ring, four circular sliding block connecting rod supports, twelve hinge pins, a circular sliding block rack fixing plate, a sealing push plate, a hook claw sealing mechanism motor and a hook claw sealing mechanism circular guide column, wherein the sealing push plate rubber sealing ring is adhered at the coaxial line position at one side of the sealing push plate, the hook claw sealing mechanism circular guide column vertical to the plane of the sealing push plate is welded at the coaxial line position at the other side of the sealing push plate, the hook claw sealing mechanism circular guide column is connected with the circular guide column support in the sliding block mechanism in a sliding manner, the limiting column vertical to the axial lead of the hook claw sealing mechanism circular guide column is arranged at the middle position of the hook claw sealing mechanism circular guide column, one side of the limiting column is provided with an air pipe external port which is also vertical to the axial lead of the circular guide pillar of the claw sealing mechanism, the air pipe external port is respectively connected with a pressure gauge and a pressurizing cylinder through an air pipe, the other end of the circular guide pillar of the claw sealing mechanism is in bolted connection with a horizontally placed sealing push plate rack, the sealing push plate rack is meshed with a gear rack of the claw sealing mechanism on the same horizontal plane, the gear of the claw sealing mechanism is superposed with the axial lead of an output shaft of a motor of the claw sealing mechanism and is connected through a flat key, the motor of the claw sealing mechanism is arranged right above a motor bracket of the claw sealing mechanism in a sliding block mechanism, the gear on the other side of the horizontal direction of the gear of the claw sealing mechanism is meshed with a circular sliding block rack, the circular sliding block rack is in bolted connection with a circular sliding block rack fixing plate, and the circular sliding block rack fixing plate is welded on one side of a circular sliding block, the circular slider is connected with a circular guide pillar of the claw sealing mechanism in a sliding mode, four circular slider connecting rod supports with the mutual included angle of 90 degrees are welded on the other side of the circular slider perpendicular to the axis direction, the four circular slider connecting rod supports are hinged to one ends of corresponding connecting rods through hinge pins and can rotate around the hinge pins mutually, the other ends of the connecting rods are hinged to the tail ends of corresponding claws through the hinge pins and can rotate around the hinge pins mutually, the middle positions of the claws are hinged to claw support rods through the hinge pins and can rotate around the hinge pins mutually, the four claw support rods are welded on one side, provided with the circular guide pillar of the claw sealing mechanism, of a sealing push plate plane perpendicularly, the mutual included angles are 90 degrees, and the end portions of the claws are connected with claw rubber heads through bolts.
The steering mechanism comprises a first steering motor support, a first steering motor, a small steering bevel gear, a second steering motor, a large steering bevel gear, four small steering mechanism gears, an upper steering mechanism base plate, a lower steering mechanism base plate, four steering mechanism nut rods, four steering mechanism part supporting claws, four steering mechanism screw rods, four steering mechanism guide posts, a second steering motor support, a large steering mechanism gear and eight supporting connecting rod through holes, wherein the first steering motor support is positioned on the transverse central line of a top plate and is in bolted connection with the top plate, the first steering motor horizontally arranged is fixed on the first steering motor support through a bolt, an output shaft of the first steering motor is the same as the axis of the small steering bevel gear and is connected through a flat key, the small steering bevel gear and the large steering bevel gear are mutually vertical and are in bevel gear meshing transmission, and the large steering bevel gear is fixed on the plane of the upper steering mechanism base plate through a bolt connection, a second steering motor support is arranged above the middle position of the upper steering mechanism bottom plate, a second steering motor which is vertically arranged is arranged on the second steering motor support, the upper steering mechanism bottom plate is connected with the parallel position right above the lower steering mechanism bottom plate through four small stand column bolts, the lower steering mechanism bottom plate is the same with the axis of the top plate support hole and is tightly attached to the top plate support hole, the lower steering mechanism bottom plate can rotate in the top plate support hole, a large steering mechanism gear is arranged at the middle position between the upper steering mechanism bottom plate and the lower steering mechanism bottom plate, the large steering mechanism gear is the same with the axis of the output shaft of the second steering motor and is connected through a flat key, small steering mechanism gears with mutual included angles of 90 degrees are respectively meshed in four directions in the same horizontal plane of the large steering mechanism gear, and a steering mechanism screw rod with coincident axes is welded below the small steering mechanism gears, the steering mechanism is characterized in that four steering mechanism guide columns are welded below a lower bottom plate of the steering mechanism and under four steering mechanism pinions, four steering mechanism nut rods are arranged between the steering mechanism guide columns and corresponding steering mechanism screw rods, the steering mechanism nut rods and the steering mechanism screw rods are in spiral fit and can rotate spirally on the steering mechanism screw rods, the steering mechanism nut rods and the steering mechanism guide columns are in sliding fit and can slide up and down in the steering mechanism guide columns, the lower ends of the steering mechanism nut rods are hinged with steering mechanism part supporting claws, and two supporting connecting rod openings are arranged in the horizontal plane longitudinal direction of the lower ends of the steering mechanism part supporting claws.
Preferably, the support link is freely insertable into and removable from two support link through openings of the steering mechanism, which are opposed to each other, and the support link is inserted into the support link through openings with an axis line position identical to that of the support link through openings, so that the two opposed steering mechanism part holding claws can be linked.
Preferably, the hook claw is L-shaped, the rubber head of the hook claw is fastened at the front end of the hook claw by a screw, the butadiene rubber with good wear resistance is adopted, and the size of the rubber head of the hook claw has a certain magnitude of interference so as to ensure better sealing property.
Preferably, the slider V-shaped opening is a V-shaped opening with an opening of 90 degrees.
Preferably, one end of the circular guide column of the claw sealing mechanism is in a shape similar to a rectangular spline and used for sliding connection, the other end of the circular guide column of the claw sealing mechanism is flat and used for connecting a rack in a bolt mode, and the middle of the circular guide column of the claw sealing mechanism is cylindrical.
Preferably, the circular slider rack fixing plate is L-shaped.
Preferably, the sealing push plate rubber sealing ring is a circular sheet type sealing washer.
The invention has the following beneficial effects:
1. the hook claw sealing mechanism is adopted, and the circular slider rack and the sealing push plate rack are driven to move in opposite directions simultaneously through the rotation of a motor of the hook claw sealing mechanism, so that the hook claw is clamped, the sealing push plate is compressed, and the detected valve body is sealed, therefore, the valve has the characteristic that larger pressure can be obtained only by providing smaller power, the valve is sealed more tightly, the defect of overhigh requirement on pressure providing equipment is overcome, and the transmission process is more stable due to the gear rack;
2. the steering mechanism is adopted, the whole steering mechanism can be controlled by a first steering motor to rotate in the top plate supporting hole, and a second steering motor can control a large gear of the steering mechanism to rotate so as to drive a small gear of the steering mechanism and a screw rod of the steering mechanism to rotate and further control the lifting of a nut rod of the steering mechanism; when the supporting claws of the steering mechanism parts are connected by the supporting connecting rod, the tested valve body can be driven to lift and rotate together, so that the steering mechanism can be controlled to rotate the valve when the air tightness of the other side of the valve is tested, the labor is reduced, and the working efficiency is improved;
3. the sliding block mechanism is used, the two sliding blocks are symmetrically arranged, when the lead screw rotates, the two sliding blocks simultaneously move inwards or outwards, the function of properly adjusting according to different lengths of the valve is achieved, the valve in a certain length range can be detected, and the universality is better;
4. adopt the manometer to show the atmospheric pressure in the valve, pressure numerical value can more directly perceived more accurate demonstration come for the reading is more convenient, and the testing result is more accurate.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of the finger seal mechanism of the present invention;
FIG. 3 is a top view of the jaw seal of the present invention when it is opened;
FIG. 4 is a schematic structural view of the middle finger sealing mechanism of the present invention when closed and clamped;
FIG. 5 is a cross-sectional view of the steering mechanism of the present invention;
FIG. 6 is a cross-sectional view of the screw engagement of the steering mechanism of the present invention;
FIG. 7 is a gear wheel diagram of the steering mechanism of the present invention;
FIG. 8 is a cross-sectional view of the screw and the slider of the present invention;
FIG. 9 is a schematic perspective view of a slider according to the present invention;
FIG. 10 is a schematic view of the present invention in its inoperative configuration;
fig. 11 is a schematic perspective view of the valve to be tested.
Reference numbers in the figures: 1-a base; 2-a pressurized cylinder; 3-upright column; 4-lower bearing bush of screw rod; 5-upper bearing bush of screw rod; 6-a steering mechanism; 601-a steering motor support; 602 to a first motor; 603-steering bevel pinion; 604-steering motor two; 605-steering large bevel gear; 606-steering mechanism pinion; 607-steering mechanism upper plate; 608-steering mechanism lower plate; 609-steering mechanism nut stem; 610-steering mechanism parts holding claw; 611-steering mechanism screw; 612-steering mechanism guide posts; 613-a second steering motor bracket; 614-steering gear wheel; 615-support rod through opening; 7-a top plate; 8-a slider mechanism; 801-a slider; 802-claw seal mechanism motor mount; 803-slide block dovetail guide rail groove; 804-slider V-port; 805-circular guide post holder; 806-slider threaded holes; 9-a hook sealing mechanism; 901-hook jaw; 902-gripper bracket bar; 903-connecting rod; 904-circular slider; 905-a limiting column; 906-an external tracheal interface; 907-sealing push plate rack; 908-hook seal mechanism gear; 909-circular slider rack; 910-hook rubber head; 911-sealing push plate rubber sealing ring; 912-circular slider link support; 913-a hinge pin; 914-circular slider rack fixed plate; 915-sealing push plate; 916-hook sealing mechanism motor; 917-circular guide post of claw sealing mechanism; 10-pressure gauge; 11-a screw motor; 12-dovetail guide rails; 13-a lead screw; 14-a support connection bar; 15-the valve body to be tested; 16-the trachea; 17-Top plate support hole.
Detailed Description
The present invention is described in detail below with reference to fig. 1-11.
A large-scale valve airtightness detection device is shown in attached figures 1-11, and comprises a base 1, a pressurizing cylinder 2 and upright columns 3, wherein four corners above the base 1 are connected with the four upright columns 3 through bolts, the axes of the upright columns 3 are perpendicular to the plane of the base 1, a pressure gauge 10 and the pressurizing cylinder 2 are respectively arranged at the left side and the right side of the upper part of the base 1, the left end and the right end of the horizontal central line above the base 1 are respectively connected with a lower lead screw bearing bush 4 through bolts, a freely rotatable lead screw 13 is arranged at the coaxial line position above the lower lead screw bearing bush 4, an upper lead screw bearing bush 5 is arranged at the coaxial line position right above the lead screw 13, the upper lead screw bearing bush 5 is connected with the lower lead screw bearing bush 4 through bolts, the polish rod of the lead screw 13 is tightly attached to the inner walls of the upper lead screw bearing bush 5 and the lower lead screw bearing bush 4, and a lead screw motor 11 is arranged at the right side of the upper part of the base 1, the axis of the output shaft of the lead screw motor 11 is superposed with the axis of the lead screw 13 and is connected with the lead screw through a coupler, two dovetail guide rails 12 which are positioned at two sides of the screw rod 13 and are parallel to the axis of the screw rod 13 are arranged above the base 1, two identical and symmetrically arranged sliding block mechanisms 8 are arranged above the dovetail-shaped guide rail 12, the axes of the two sliding block mechanisms 8 are overlapped, the two sliding block mechanisms 8 can horizontally and transversely move left and right on the base 1 along the dovetail-shaped guide rail 12, the same claw sealing mechanisms 9 are arranged above the two sliding block mechanisms 8, a tested valve body 15 is arranged above a slide block V-shaped opening 804 in the slide block mechanism 8, a top plate 7 parallel to the plane of the base 1 is connected with the upper part of the upright post 3 through a bolt, a top plate supporting hole 17 is formed in the center of the top plate 7, a steering mechanism 6 is arranged in the top plate supporting hole 17, and the steering mechanism 6 can rotate in the top plate supporting hole 17.
The slide block mechanism 8 comprises a slide block 801, a claw sealing mechanism motor support 802, two slide block dovetail type guide rail grooves 803, a slide block V-shaped opening 804, a circular guide pillar support 805 and a slide block threaded hole 806, the slide block 801 parallel to the horizontal plane is arranged below the slide block mechanism 8, the two slide block dovetail type guide rail grooves 803 parallel to each other are processed in the transverse line direction below the slide block 801, the two slide block dovetail type guide rail grooves 803 are connected with the two dovetail type guide rails 12 in a sliding mode, the slide block threaded hole 806 is arranged in the position of the middle transverse line direction of the two slide block dovetail type guide rail grooves 803, the slide block threaded hole 806 is identical to the axis of the lead screw 13 and is in spiral fit, the slide block V-shaped opening 804 vertical to the plane of the slide block 801 is arranged on one side of the slide block mechanism 8, the circular guide pillar support 805 vertical to the plane of the slide block 801 is arranged in the vertical direction on the left side of the slide block V-shaped opening 804, the other side of the sliding block mechanism 8 is provided with a claw sealing mechanism motor bracket 802 positioned above the sliding block 801.
The claw sealing mechanism 9 comprises four claws 901, four claw support rods 902, four connecting rods 903, a circular slider 904, a limiting column 905, an outer air pipe interface 906, a sealing push plate rack 907, a claw sealing mechanism gear 908, a circular slider rack 909, four claw rubber heads 910, a sealing push plate rubber sealing ring 911, four circular slider connecting rod supports 912, twelve hinge pins 913, a circular slider rack fixing plate 914, a sealing push plate 915, a claw sealing mechanism motor 916 and a claw sealing mechanism circular guide column 917, wherein the sealing push plate rubber sealing ring 911 is adhered at the coaxial line position of one side of the sealing push plate 915, the claw sealing mechanism circular guide column 917 vertical to the plane of the sealing push plate 915 is welded at the coaxial line position of the other side of the sealing push plate 915, and the claw sealing mechanism circular guide column 917 is in sliding connection with the circular guide column support 805 in the slider mechanism 8, a limiting column 905 vertical to the axial lead of the circular guide column 917 of the claw sealing mechanism is arranged in the middle of the circular guide column 917 of the claw sealing mechanism, an air pipe external interface 906 which is also vertical to the axial lead of the circular guide column 917 of the claw sealing mechanism is arranged on one side of the limiting column 905, the air pipe external interface 906 is respectively connected with the pressure gauge 10 and the pressurizing cylinder 2 through an air pipe 16, a horizontally-arranged sealing push plate rack 907 is bolted on the other end of the circular guide column 917 of the claw sealing mechanism, the sealing push plate rack 907 is meshed with a gear rack in the same horizontal plane with the gear 908 of the claw sealing mechanism, the gear 908 of the claw sealing mechanism is superposed with the axial lead of the output shaft of the motor 916 of the claw sealing mechanism and is connected through a flat key, the motor 916 of the claw sealing mechanism is arranged right above a motor support 802 of the claw sealing mechanism in the sliding block mechanism 8, and a circular sliding block rack 909 is meshed with the gear on the other side of the horizontal direction of the gear 908 of the claw sealing mechanism, the circular slider rack 909 is bolted on the circular slider rack fixing plate 914, the circular slider rack fixing plate 914 is welded on one side of the circular slider 904, the circular slider 904 is connected with a circular guide post 917 of a claw sealing mechanism in a sliding manner, the other side of the circular slider 904 is welded with four circular slider link supports 912 with an included angle of 90 degrees mutually perpendicular to the axial direction, the four circular slider link supports 912 are hinged with one end of a corresponding link 903 through a hinge pin 913 and can rotate around the hinge pin 913 mutually, the other end of the link 903 is hinged with the tail end of a corresponding claw 901 through the hinge pin 913 and can rotate around the hinge pin 913 mutually, the middle position of the claw 901 is hinged with a claw support rod 902 through the hinge pin 913 and can rotate around the hinge pin 913 mutually, the four claw support rods 902 are welded on one side of the circular guide post 917 of the claw sealing mechanism on the plane of the sealing push plate 915 perpendicularly, the mutual included angle is 90 degrees, and the claw end part of the claw 901 is connected with a claw rubber head 910 through a bolt.
The steering mechanism 6 comprises a first steering motor support 601, a first steering motor 602, a small steering bevel gear 603, a second steering motor 604, a large steering bevel gear 605, four small steering mechanism gears 606, an upper steering mechanism bottom plate 607, a lower steering mechanism bottom plate 608, four steering mechanism nut rods 609, four steering mechanism part support claws 610, four steering mechanism screws 611, four steering mechanism guide posts 612, a second steering motor support 613, a large steering mechanism gear 614 and eight support connecting rod through holes 615, wherein the first steering motor support 601 is positioned on the transverse central line of the top plate 7 and is in bolted connection with the top plate 7, the first steering motor 602 which is horizontally arranged is fixed on the first steering motor support 601 through bolts, the output shaft of the first steering motor 602 is the same as the axis of the small steering bevel gear 603 and is connected through a flat key, the small steering bevel gear 603 and the large steering bevel gear 605 are vertical to each other and are in bevel gear meshing transmission, the large steering bevel gear 605 is fixed on the plane of the upper steering mechanism base plate 607 through bolt connection, a second steering motor support 613 is arranged above the middle position of the upper steering mechanism base plate 607, a second steering motor 604 which is vertically arranged is arranged on the second steering motor support 613, the upper steering mechanism base plate 607 is connected with the parallel position right above the lower steering mechanism base plate 608 through four small upright post bolts, the lower steering mechanism base plate 608 and the top plate support hole 17 have the same axial line and are tightly attached, the lower steering mechanism base plate 608 can rotate in the top plate support hole 17, a large steering mechanism gear 614 is arranged in the middle position between the upper steering mechanism base plate 607 and the lower steering mechanism base plate 608, the large steering mechanism gear 614 is the same as the axial line of the output shaft of the second steering motor 604 and is connected through a flat key, and small steering mechanism gears 606 with the mutual included angle of 90 degrees are respectively engaged on four directions in the same horizontal plane of the large steering mechanism gear 614, a steering mechanism screw 611 with coincident axes is welded below the steering mechanism pinion 606, four steering mechanism guide posts 612 are welded below the steering mechanism lower base plate 608 and under the four steering mechanism pinions 606, steering mechanism nut rods 609 are arranged between the four steering mechanism guide posts 612 and the corresponding steering mechanism screw 611, the steering mechanism nut rods 609 and the steering mechanism screw 611 are in screw fit and can rotate on the steering mechanism screw 611 in a screw manner, the steering mechanism nut rods 609 and the steering mechanism guide posts 612 are in sliding fit and can slide up and down in the steering mechanism guide posts 612, a steering mechanism part supporting claw 610 is hinged to the lower end of the steering mechanism nut rod 609, and two supporting connecting rod through holes 615 are arranged in the longitudinal direction of the horizontal plane at the lower end of the steering mechanism part supporting claw 610.
The two opposite support link through holes 615 of the steering mechanism 6 allow the support link 14 to be freely inserted into and removed from the support link through holes 615, and the support link 14 is inserted into the support link through holes 615 with the same axial position as the support link through holes 615, so that the two opposite steering mechanism part holding claws 610 can be associated with each other.
The hook 901 is L-shaped, the hook rubber head 910 is fastened to the front end of the hook 901 by screws, butadiene rubber with good wear resistance is used, and the size of the hook rubber head 910 has a certain magnitude of interference so as to ensure better air tightness.
The slider V-shaped opening 804 is a V-shaped opening with an opening of 90 degrees.
One end of the circular guide post 917 of the claw sealing mechanism is shaped like a rectangular spline for sliding connection, the other end is flat for bolting a rack, and the middle is cylindrical.
The circular slider rack fixing plate 914 is L-shaped.
The sealing push plate rubber sealing ring 911 is a circular sheet type sealing washer.
When the air tightness of the valve body 15 to be measured is measured, the valve body 15 to be measured is firstly twisted tightly, the detection device is in an initial state in a non-working state as shown in the attached drawing 10, the lead screw motor 11 is started according to the length of the valve body 15 to be measured, the lead screw 13 is driven to rotate, the distance between the two sliding block mechanisms 8 is adjusted, the lead screw motor 11 is stopped when the distance reaches a proper position, and the valve body 15 to be measured is placed on the sliding block V-shaped opening 804 in the two sliding block mechanisms 8. The claw sealing mechanism motor 916 is started to drive the claw sealing mechanism gear 908 to rotate, so that the sealing push plate rack 907 meshed with the gear on the claw sealing mechanism gear 908 moves inwards, the circular slider rack 909 moves outwards, the circular slider 904 further moves outwards, the sealing push plate 915 moves inwards, when the circular slider 904 moves to the limiting column 905, the claw sealing mechanism motor 916 stops running, the circular slider 904 moves outwards, the connecting rod 903 and the claw 901 are driven to rotate, the claw 901 is clamped, and under the clamping force of the claw 901 and the pressure of the sealing push plate 915, the two ends of the tested valve body 15 are sealed. After the valve body 15 to be measured is clamped, the pressurizing cylinder 2 starts to pressurize, and when the predetermined pressure is reached, the pressurizing cylinder stops, and data reading from the pressure gauge 10 is started to judge whether the airtightness is qualified. After one end detection is finished, the claw sealing mechanism motor 916 rotates reversely to release the claw sealing mechanism 9, at the moment, the second steering motor 604 is started, the large steering mechanism gear 614 drives the four small steering mechanism gears 606 to rotate, the screw 611 of the steering mechanism rotates along with the small steering mechanism gears 606, the nut rod 609 of the steering mechanism and the supporting claw 610 of the steering mechanism part start to descend, the supporting claw 610 of the steering mechanism part is manually broken off in the descending process to prevent the tested valve body 15 from being touched in the descending process, after the supporting claw sealing mechanism descends to a specified position, the second steering motor 604 is stopped, the four supporting connecting rods 14 are inserted into the four pairs of supporting connecting rod through holes 615, and the two opposite supporting connecting rod through holes 615 are connected. The second steering motor 604 is started to rotate in the reverse direction, the second steering mechanism nut 609 and the second steering mechanism component holding claw 610 start to lift together with the component, and after the component is lifted to a predetermined position, the second steering motor 604 is stopped. And starting a first steering motor 602, driving a small steering bevel gear 603 to rotate by the first steering motor 602, starting a large steering bevel gear 605 meshed with the small steering bevel gear 603 to rotate, further enabling an upper steering mechanism bottom plate 607 and a lower steering mechanism bottom plate 608 to rotate together, finally driving the tested valve body 15 to rotate, stopping the first steering motor 602 after rotating 180 degrees, starting a second steering motor 604 to enable a nut rod 609 of the steering mechanism and a supporting claw 610 of a part of the steering mechanism to descend again, further enabling the tested valve body 15 to descend, stopping the second steering motor 604 after descending to a specified height, and enabling the tested valve body 15 to fall onto the V-shaped opening 804 of the sliding block again after being turned 180 degrees. The four tie rods 14 inserted into the four tie rod through holes 615 are removed, the second tie rod 604 is turned over, and the second tie rod 604 is stopped after the second tie rod 609 and the second tie rod part holding claw 610 are raised to the initial position. The claw sealing mechanism motor 916 is started again to enable the tested valve body 15 to be clamped in a sealing mode, then the pressurizing cylinder 2 starts pressurizing, when the specified pressure is achieved, the pressurizing cylinder stops pressurizing, data are read from the pressure gauge 10, and whether the air tightness of the other end is qualified or not is judged. And finally, after all measurements are finished, starting the hook sealing mechanism motor 916 to reversely rotate, loosening the hook sealing mechanism 9, and taking out the measured valve body 15.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any modification, equivalent replacement, or improvement made within the scope of the present invention shall fall within the protection scope of the present invention.
Claims (1)
1. The utility model provides a large-scale valve gas tightness detection device, includes base (1), pressurized cylinder (2), stand (3), its characterized in that: four corners above the base (1) are connected with four upright posts (3) through bolts, the axes of the upright posts (3) are perpendicular to the plane of the base (1), the left and right side boundaries above the base (1) are respectively provided with a pressure gauge (10) and a pressurizing cylinder (2), the left end and the right end of the horizontal central line above the base (1) are respectively connected with a lower lead screw bearing bush (4) through bolts, a lead screw (13) capable of freely rotating is arranged at the coaxial line position above the lower lead screw bearing bush (4), an upper lead screw bearing bush (5) is arranged at the coaxial line position right above the lead screw (13), the upper lead screw bearing bush (5) is connected with the lower lead screw bearing bush (4) through bolts, the polish rod of the lead screw (13) is tightly attached to the inner walls of the upper lead screw bearing bush (5) and the lower lead screw bearing bush (4), and a lead screw motor (11) is arranged at the right side boundary above the base (1), the axis of an output shaft of the lead screw motor (11) is coincident with the axis of a lead screw (13) and is connected with the axis of the lead screw (13) through a coupler, two dovetail-shaped guide rails (12) which are positioned at two sides of the lead screw (13) and are parallel to the axis of the lead screw (13) are arranged above the base (1), two identical and symmetrically-arranged sliding block mechanisms (8) are arranged above the dovetail-shaped guide rails (12), the axes of the two sliding block mechanisms (8) are coincident, the two sliding block mechanisms (8) can horizontally and transversely move left and right on the base (1) along the dovetail-shaped guide rails (12), the same claw sealing mechanisms (9) are arranged above the two sliding block mechanisms (8), a valve body (15) to be tested is arranged above a sliding block V-shaped opening (804) in the sliding block mechanism (8), a top plate (7) which is parallel to the plane of the base (1) is connected with a bolt above the upright post (3), and a top plate supporting hole (17) is processed at the central position of the top plate (7), a steering mechanism (6) is arranged in the top plate supporting hole (17), and the steering mechanism (6) can rotate in the top plate supporting hole (17);
the sliding block mechanism (8) comprises a sliding block (801), a claw sealing mechanism motor support (802), two sliding block dovetail type guide rail grooves (803), a sliding block V-shaped opening (804), a circular guide pillar support (805) and a sliding block threaded hole (806), the sliding block (801) parallel to the horizontal plane is arranged below the sliding block mechanism (8), the two sliding block dovetail type guide rail grooves (803) parallel to each other are processed in the transverse line direction below the sliding block (801), the two sliding block dovetail type guide rail grooves (803) are in sliding connection with the two dovetail type guide rails (12), the sliding block threaded hole (806) is arranged in the middle of the two sliding block dovetail type guide rail grooves (803) in the transverse line direction, the sliding block threaded hole (806) is identical to the axis of the lead screw (13) and is in spiral fit, the sliding block V-shaped opening (804) perpendicular to the plane of the sliding block (801) is arranged on one side of the sliding block mechanism (8), a circular guide post bracket (805) vertical to the plane of the sliding block (801) is arranged on the left side of the sliding block V-shaped opening (804) in the vertical direction, and a claw sealing mechanism motor bracket (802) positioned above the sliding block (801) is arranged on the other side of the sliding block mechanism (8);
the claw sealing mechanism (9) comprises four claws (901), four claw support rods (902), four connecting rods (903),
A circular slide block (904), a limiting column (905), an outer trachea interface (906), a sealing push plate rack (907), a gear (908) of a hook claw sealing mechanism, a circular slide block rack (909), four hook claw rubber heads (910), a sealing push plate rubber sealing ring (911), four circular slide block connecting rod supports (912), twelve hinge pins (913), a circular slide block rack fixing plate (914), a sealing push plate (915), a hook claw sealing mechanism motor (916) and a circular guide pillar (917) of the hook claw sealing mechanism, wherein the sealing push plate rubber sealing ring (911) is stuck at the coaxial line position at one side of the sealing push plate (915), the circular guide pillar (917) of the hook claw sealing mechanism vertical to the plane of the sealing push plate (915) is welded at the coaxial line position at the other side of the sealing push plate (915), and the circular guide pillar (917) of the hook claw sealing mechanism is connected with the circular guide pillar support (805) in the slide block mechanism (8) in a sliding manner, a limiting column (905) perpendicular to the axial lead of the circular guide column (917) of the claw sealing mechanism is arranged in the middle of the circular guide column (917) of the claw sealing mechanism, an air pipe external interface (906) which is also perpendicular to the axial lead of the circular guide column (917) of the claw sealing mechanism is arranged on one side of the limiting column (905), the air pipe external interface (906) is respectively connected with a pressure gauge (10) and a pressurizing cylinder (2) through an air pipe (16), the other end of the circular guide column (917) of the claw sealing mechanism is in bolted connection with a horizontally-arranged sealing push plate rack (907), the sealing push plate rack (907) and a claw sealing mechanism gear (908) are in gear rack meshing on the same horizontal plane, the claw sealing mechanism gear (908) is overlapped with the axial lead of an output shaft of a claw sealing mechanism motor (916) and is connected through a flat key, and the claw sealing mechanism motor (916) is arranged right above a claw sealing mechanism motor support (802) in a sliding block mechanism (8), the other side of the gear (908) of the hook jaw sealing mechanism is engaged with a circular slider rack (909) through a gear in the horizontal direction, the circular slider rack (909) is connected to a circular slider rack fixing plate (914) through a bolt, the circular slider rack fixing plate (914) is welded on one side of a circular slider (904), the circular slider (904) is connected with a circular guide post (917) of the hook jaw sealing mechanism in a sliding mode, the other side of the circular slider (904) is welded with four circular slider connecting rod brackets (912) which form an included angle of 90 degrees with each other in a direction perpendicular to the axis, the four circular slider connecting rod brackets (912) are hinged with one end of a corresponding connecting rod (903) through a hinge pin (913) and can rotate around the hinge pin (913) with each other, the other end of the connecting rod (903) is hinged with the tail end of the corresponding hook jaw (901) through the hinge pin (913) and can rotate around the hinge pin (913) with each other, the middle position of the claw (901) is hinged with claw support rods (902) through a hinge pin (913) and can rotate around the hinge pin (913) mutually, the four claw support rods (902) are vertically welded on one side of a sealing push plate (915) plane, which is provided with a circular guide column (917) of a claw sealing mechanism, the included angle between the four claw support rods is 90 degrees, and the claw end part of the claw (901) is in bolted connection with a claw rubber head (910);
the steering mechanism (6) comprises a first steering motor support (601), a first steering motor (602), a small steering bevel gear (603), a second steering motor (604), a large steering bevel gear (605), four steering mechanism pinions (606), a steering mechanism upper base plate (607), a steering mechanism lower base plate (608), four steering mechanism nut rods (609), four steering mechanism part supporting claws (610), four steering mechanism screw rods (611), four steering mechanism guide columns (612), a second steering motor support (613), a steering mechanism large gear (614) and eight supporting connecting rod through holes (615), the first steering motor support (601) is positioned on the transverse central line of the top plate (7) and is in bolted connection with the top plate (7), the first steering motor (602) which is horizontally arranged is fixed on the first steering motor support (601) through bolts, the axis of the output shaft of the first steering motor (602) is the same as that of the small steering bevel gear (603) and is connected through a flat key, the axes of the small steering bevel gear (603) and the large steering bevel gear (605) are mutually vertical and are in bevel gear meshing transmission, the large steering bevel gear (605) is fixedly connected on the plane of an upper steering mechanism bottom plate (607) through bolts, a second steering motor bracket (613) is arranged above the middle position of the upper steering mechanism bottom plate (607), a second vertically-arranged steering motor (604) is arranged on the second steering motor bracket (613), the upper steering mechanism bottom plate (607) is connected at the parallel position right above a lower steering mechanism bottom plate (608) through four small upright post bolts, the lower steering mechanism bottom plate (608) is the same as and tightly attached to the axis of the top plate supporting hole (17), the lower steering mechanism bottom plate (608) can rotate in the top plate supporting hole (17), and a large steering mechanism gear (614) is arranged at the middle position between the upper steering mechanism bottom plate (607) and the lower steering mechanism bottom plate (608), the steering mechanism large gear (614) is the same as the output shaft axis of the second steering motor (604) and is connected with the output shaft axis of the second steering motor (604) through a flat key, four directions in the same horizontal plane of the steering mechanism large gear (614) are respectively meshed with steering mechanism small gears (606) with the included angles of 90 degrees, steering mechanism screw rods (611) with coincident axes are welded below the steering mechanism small gears (606), four steering mechanism guide posts (612) are welded below a steering mechanism lower base plate (608) and under the four steering mechanism small gears (606), steering mechanism nut rods (609) are arranged between the four steering mechanism guide posts (612) and the corresponding steering mechanism screw rods (611), the steering mechanism nut rods (609) are in spiral fit with the steering mechanism screw rods (611) and can rotate on the steering mechanism screw rods (611), and the steering mechanism nut rods (609) are in sliding fit with the steering mechanism guide posts (612) and can rotate in the steering mechanism guide posts (612) through sliding fit The lower end of the steering mechanism nut rod (609) is hinged with a steering mechanism part supporting claw (610), and two supporting connecting rod through holes (615) are formed in the lower end of the steering mechanism part supporting claw (610) in the longitudinal direction of a horizontal plane;
the support connecting rod (14) can be freely inserted into and pulled out of two opposite support connecting rod through holes (615) in the steering mechanism (6), the axial position of the support connecting rod (14) is the same as that of the support connecting rod through holes (615) when the support connecting rod (14) is inserted into the support connecting rod through holes (615), and two opposite steering mechanism part supporting claws (610) can be connected;
the hook claw (901) is L-shaped, the hook claw rubber head (910) is fastened at the front end of the hook claw (901) by using a screw, butadiene rubber with good wear resistance is adopted, and the size of the hook claw rubber head (910) has certain interference;
the slide block V-shaped opening (804) is a V-shaped opening with an opening of 90 degrees;
one end of the circular guide pillar (917) of the claw sealing mechanism is in a rectangular spline shape for sliding connection, the other end of the circular guide pillar is in a flat shape for connecting a rack through a bolt, and the middle of the circular guide pillar is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111267518.8A CN113916470A (en) | 2020-06-22 | 2020-06-22 | Large-scale valve gas tightness detection device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111267518.8A CN113916470A (en) | 2020-06-22 | 2020-06-22 | Large-scale valve gas tightness detection device |
| CN202010571284.5A CN111678661B (en) | 2020-06-22 | 2020-06-22 | Equipment for detecting air tightness of large valve |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010571284.5A Division CN111678661B (en) | 2020-06-22 | 2020-06-22 | Equipment for detecting air tightness of large valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113916470A true CN113916470A (en) | 2022-01-11 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111267518.8A Withdrawn CN113916470A (en) | 2020-06-22 | 2020-06-22 | Large-scale valve gas tightness detection device |
| CN202010571284.5A Active CN111678661B (en) | 2020-06-22 | 2020-06-22 | Equipment for detecting air tightness of large valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010571284.5A Active CN111678661B (en) | 2020-06-22 | 2020-06-22 | Equipment for detecting air tightness of large valve |
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| Country | Link |
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| CN (2) | CN113916470A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117168693A (en) * | 2023-10-31 | 2023-12-05 | 苏州朗高智能科技有限公司 | Four acupuncture point intelligent closestool is hot module gas tightness detects frock promptly |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340541A (en) * | 2021-07-20 | 2021-09-03 | 温州商学院 | Intelligent testing arrangement of ball valve gas tightness |
| CN113532767B (en) * | 2021-09-16 | 2021-12-03 | 常州市翔波机械制造有限公司 | A leak protection detection device for valve production and processing |
| CN113984305B (en) * | 2021-12-29 | 2022-03-11 | 山东伯雷流体控制设备有限公司 | Valve sealing performance testing device |
| CN115163966B (en) * | 2022-06-17 | 2024-01-16 | 盘锦博瑞石油工程有限公司 | Pipeline patch device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2078388U (en) * | 1990-03-29 | 1991-06-05 | 山东益都阀门厂 | Device for valve pressure testing |
| CN202182807U (en) * | 2011-08-11 | 2012-04-04 | 浙江省工业设备安装集团有限公司 | Valve pressure testing device |
| CN204008103U (en) * | 2014-07-23 | 2014-12-10 | 永嘉县得利机电液压实业公司 | A kind of flange valve platform |
| CN204556172U (en) * | 2015-04-13 | 2015-08-12 | 浙江海洋学院 | A kind of for detecting the bubble-tight testing table of large size valve |
| CN206177532U (en) * | 2016-06-22 | 2017-05-17 | 海门市苍云机械有限公司 | A simple and easy frock for valve leaks hunting |
| KR101938702B1 (en) * | 2016-11-29 | 2019-01-15 | 한전케이피에스 주식회사 | Pressure test member for checking inlet valve of pumping-up electric power station |
| CN207007448U (en) * | 2017-06-01 | 2018-02-13 | 天津市晓晖环保机械有限公司 | A kind of valve pressure device |
| CN207695998U (en) * | 2017-12-14 | 2018-08-07 | 昆山钴瓷金属科技有限公司 | Integral type tooling is suppressed in a kind of dismounting of valve |
| CN108195515A (en) * | 2018-01-12 | 2018-06-22 | 池州市日升阀门管件制造有限公司 | A kind of valve-testing machine |
| CN109813504B (en) * | 2019-02-13 | 2020-09-01 | 温州翰轩林工业设计有限公司 | Tightness checking device of valve |
| CN210141973U (en) * | 2019-05-24 | 2020-03-13 | 常静 | Clamping device for valve pressure test |
| CN210375683U (en) * | 2019-08-09 | 2020-04-21 | 天津翔越电仪技术有限公司 | Pressing and clamping device for multi-model valves |
| CN210464812U (en) * | 2019-09-19 | 2020-05-05 | 福建建合人防工程设备有限公司 | Airtight valve gas tightness detection device |
| CN111220330B (en) * | 2020-04-09 | 2020-12-04 | 徐州云创餐饮有限公司 | Air tightness quality inspection equipment |
-
2020
- 2020-06-22 CN CN202111267518.8A patent/CN113916470A/en not_active Withdrawn
- 2020-06-22 CN CN202010571284.5A patent/CN111678661B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117168693A (en) * | 2023-10-31 | 2023-12-05 | 苏州朗高智能科技有限公司 | Four acupuncture point intelligent closestool is hot module gas tightness detects frock promptly |
| CN117168693B (en) * | 2023-10-31 | 2024-01-23 | 苏州朗高智能科技有限公司 | Four acupuncture point intelligent closestool is hot module gas tightness detects frock promptly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111678661A (en) | 2020-09-18 |
| CN111678661B (en) | 2022-01-21 |
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Application publication date: 20220111 |