CN219015563U

CN219015563U - Quick detection equipment for sealing performance of metal hard-seal wear-resistant ball valve

Info

Publication number: CN219015563U
Application number: CN202223318984.7U
Authority: CN
Inventors: 段伟; 贺杨; 丁瑞; 王延运; 谭玄
Original assignee: Sichuan Suke Fluid Control Equipment Co ltd
Current assignee: Sichuan Suke Fluid Control Equipment Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-12
Anticipated expiration: 2032-12-09

Abstract

The utility model relates to the technical field of ball valve detection, and provides quick detection equipment for the sealing performance of a metal hard-seal wear-resistant ball valve, which comprises a support piece for supporting and positioning a ball body, a clamping unit for clamping a valve seat and a ventilation assembly for ventilating a valve seat cavity, wherein the clamping unit comprises a sleeve and a driving element, one end of the sleeve is closed, the valve seat is embedded in the sleeve, a sealing part is arranged between the valve seat and the sleeve, the side wall of the sleeve is provided with an air inlet communicated with the valve seat cavity, and the air inlet is connected with the ventilation assembly; the output end of the driving element is connected with the closed end of the sleeve to drive the sleeve to approach or separate from the ball. The utility model uses the driving element to make the valve seat tightly prop against the sphere, and the nut is not required to be repeatedly screwed by manpower, thereby reducing the labor intensity and improving the operation efficiency.

Description

Quick detection equipment for sealing performance of metal hard-seal wear-resistant ball valve

Technical Field

The utility model relates to the technical field of ball valve detection, in particular to a device for rapidly detecting the sealing performance of a metal hard-seal wear-resistant ball valve.

Background

The ball valve is a valve with a valve rod driving the opening and closing part (ball) and rotating around the axis of the ball valve, and is mainly used for adjusting and controlling fluid medium. When the ball valve is used, the sealing performance between the ball and the valve seat in the ball valve directly influences the use of the ball valve. Therefore, in the manufacturing process, the tightness of the ball body and the valve seat needs to be detected so as to ensure the safe use of the valve.

If the tightness detection of the ball body and the valve seat is carried out after the ball valve is assembled, if the requirements cannot be met, the ball valve needs to be disassembled to adjust the corresponding structure to meet the requirements, and the ball valve is often required to be disassembled and assembled for multiple times, particularly for the metal hard seal wear-resistant ball valve, the qualification rate is low (namely, the sealing performance of the ball body and the valve seat is easy to be unqualified), and the disassembly times are more and very troublesome. In order to avoid multiple disassembly and assembly of the metal hard seal wear-resistant ball valve, the tightness of a ball body and a valve seat is usually detected before the ball valve is assembled, for example, the patent document with the publication number of CN107515079A discloses a detection device for the tightness of the ball body and the valve seat in the ball valve, and the patent document with the publication number of CN108278379A discloses a detection device for the tightness of a fixed ball valve, and the detection device well avoid multiple disassembly and assembly of the ball valve.

However, in the prior art, the ball and the valve seat are butt-jointed and fixed by using two clamping pieces which are oppositely arranged, and the ball valve are fixed by tightening the two clamping pieces through bolts and nuts, so that the nuts need to be manually screwed before detection, the nuts need to be manually unscrewed after detection, time and labor are wasted, and the efficiency is low.

Disclosure of Invention

The utility model aims to provide quick detection equipment for the sealing performance of a metal hard-seal wear-resistant ball valve, which aims to solve the technical problems of time and labor waste and low efficiency in the prior art of butt joint fixation of a valve seat and a ball body.

The embodiment of the utility model is realized by the following technical scheme:

the utility model provides a quick check out test set of metal seal wear-resisting ball valve sealing performance, including the support piece that is used for supporting the location spheroid, be used for the centre gripping unit of centre gripping disk seat and be used for to the ventilation subassembly of ventilating in the disk seat cavity, the centre gripping unit includes sleeve and drive element, telescopic one end is sealed, the disk seat inlays and is equipped with sealing member in sleeve inside and disk seat and sleeve between, telescopic lateral wall is equipped with the air inlet that communicates the disk seat cavity, the air inlet is connected with ventilation subassembly; the output end of the driving element is connected with the closed end of the sleeve to drive the sleeve to approach or separate from the ball.

Optionally, a guide seat is connected between the closed end of the sleeve and the output end of the driving element, guide rods are fixedly arranged on two sides of the sleeve, guide holes are formed in the guide seat, and the guide rods are in sliding fit with the guide holes.

Optionally, a linear bearing is arranged in the guide hole.

Optionally, a pull plate is installed at the inner end of the sleeve, a step for propping against one end of the valve seat extending into the sleeve is arranged on the pull plate, and a threaded hole is formed in the center of the pull plate.

Optionally, the support is in rotational engagement with the lower stem bore of the ball.

Optionally, one side of support piece is fixed and is provided with the supporting seat, and the supporting seat top rotates and is connected with the cantilever, rotates on the cantilever and is provided with the dwang, and the lower extreme of dwang can cooperate with spheroidal upper valve rod hole.

Optionally, an anti-rotation rod is arranged on the cantilever, and an anti-rotation hole matched with the anti-rotation rod is arranged at the top of the supporting seat.

Optionally, the lower end of the rotating rod is sleeved on the replaceable conversion head.

Optionally, the ventilation assembly comprises a tee joint, an air inlet pipe, an air outlet pipe and a connecting pipe, wherein the air inlet pipe, the air outlet pipe and the connecting pipe are connected with three ports of the tee joint in one-to-one correspondence, and one end of the connecting pipe away from the tee joint is connected with the air inlet.

Optionally, the driving element is one of a hydraulic cylinder, a cylinder or an electric push rod.

The utility model has at least the following advantages and beneficial effects: according to the utility model, the ball body is supported and positioned through the supporting piece, the valve seat is embedded in the sleeve, the sleeve is driven by the driving element to be close to the ball body before detection, the valve seat is abutted against the ball body, the butt joint fixation of the valve seat and the ball body can be completed, the ventilation assembly is used for ventilating the cavity of the valve seat through the air inlet, the tightness between the valve seat and the ball body can be detected, the whole body of the sleeve and the valve seat is far away from the ball body through the driving element after detection, and the valve seat and the ball body can be separated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a metal hard seal wear-resistant ball valve sealing performance rapid detection device provided by the utility model;

FIG. 2 is a cross-sectional view of a metal hard seal wear-resistant ball valve sealing performance rapid detection device provided by the utility model;

FIG. 3 is an enlarged view at A of FIG. 2;

icon: 1-supporting piece, 2-clamping unit, 201-sleeve, 202-driving element, 3-ventilation assembly, 301-tee joint, 302-air inlet pipe, 303-air outlet pipe, 304-connecting pipe, 305-pressure gauge, 4-sealing part, 401-sealing gasket, 402-spring seat, 403-abutting spring, 5-guide seat, 6-guide rod, 7-pull plate, 8-supporting seat, 9-cantilever, 10-rotating rod, 11-anti-rotating rod, 12-conversion head, 13-rotating shaft, 14-frame, 15-working platform, 16-fixed plate, 17-sphere, 18-valve seat, 19-trapezoidal screw rod and 20-flange.

Detailed Description

Referring to fig. 1-2, a rapid detection device for sealing performance of a metal hard-seal wear-resistant ball valve comprises a support piece 1 for supporting and positioning a ball 17, a clamping unit 2 for clamping a valve seat 18 and a ventilation assembly 3 for ventilating a cavity of the valve seat 18, wherein the ball 17 is supported by the support piece 1 during detection, the valve seat 18 is clamped by the clamping unit 2 and is in butt joint fixation with the ball 17, and high-pressure gas is introduced into the cavity of the valve seat 18 by the ventilation assembly 3 to detect the sealing performance between the valve seat 18 and the ball 17.

The present embodiment is described as applied to a ball valve having a double valve seat 18, that is, the present embodiment has two clamping units 2 clamping corresponding valve seats 18, it is easy to understand that only one clamping unit 2 is required when applying a ball valve having a single valve group. In practical application, still include frame 14, the top of frame 14 is equipped with work platform 15, and support 1, clamping unit 2 and ventilation subassembly 3 all set up on work platform 15.

The support piece 1 is connected on the working platform 15, and the spheroid 17 and the support piece 1 normal running fit realize the support location of spheroid 17, in this embodiment, the support piece 1 can directly adopt the lower valve rod of ball valve to replace, need not to process support piece 1 in addition, practices thrift the cost.

One side of support piece 1 is fixed and is provided with supporting seat 8, supporting seat 8 fixed connection is on work platform 15, the top rotation of supporting seat 8 is connected with cantilever 9, specifically, cantilever 9 is connected through pivot 13 and the top of supporting seat 8, cantilever 9 can rotate for supporting seat 8 about pivot 13 promptly, the last rotation of cantilever 9 is provided with dwang 10, dwang 10 is the spline shaft structure, can also follow the axis direction and remove, the lower extreme of dwang 10 can cooperate with the upper valve rod hole of spheroid 17 promptly, through making dwang 10 rotate, can drive spheroid 17 rotation, so set up, can be after clamping unit 2 centre gripping disk seat 18 and spheroid 17 butt joint are fixed, before the gas tightness detects, the spheroid 17 is examined spheroid 17 rotation in-process and is had the strain, the hairpin, problem such as shake.

Further, the lower end of the rotating rod 10 is sleeved on the replaceable conversion head 12, specifically, the section of the lower end of the rotating rod 10 perpendicular to the axis is in a rectangular structure, the section of the inner wall of the conversion head 12 perpendicular to the axis is also in a corresponding rectangular structure, and relative rotation between the rotating rod 10 and the conversion head 12 is avoided. It should be understood by those skilled in the art that the cross section of the upper valve hole of the ball 17 perpendicular to the axis is generally rectangular, and then the cross section of the outer wall of the conversion head 12 perpendicular to the axis is rectangular corresponding to the valve hole of the ball 17, and when the rotary rod 10 rotates, there is no relative rotation between the conversion head 12 and the ball 17.

In addition, the conversion head 12 can be replaced according to ball valves with different specifications so as to adapt to valve holes on the ball 17 of different ball valves.

Be equipped with on cantilever 9 and prevent bull stick 11, the top of supporting seat 8 is equipped with can prevent bull stick 11 complex and prevents changeing the hole, prevents bull stick 11 accessible threaded connection on cantilever 9, also can directly insert and establish on cantilever 9, and what be worth to say is, the bull stick 11 of preventing that sets up can avoid cantilever 9's rotation in the testing process, after the detection is accomplished, takes out and prevents bull stick 11, can rotate cantilever 9, conveniently takes off spheroid 17.

The clamping unit 2 comprises a sleeve 201 and a driving element 202, one end of the sleeve 201 is closed, a valve seat 18 is embedded in the sleeve 201, a sealing component 4 is arranged between the valve seat 18 and the sleeve 201, a person skilled in the art should know that in the ball valve, sealing is realized between the valve seat 18 and a valve body by utilizing a spring seat 402, a sealing gasket 401 and a tight abutting spring 403, the sealing component 4 directly adopts the sealing gasket 401, the spring seat 402 and the tight abutting spring 403 in the ball valve, specifically, referring to fig. 3, a supporting step is arranged on the side wall of the sleeve 201, a sealing gasket 401, the spring seat 402 and the tight abutting spring 403 are arranged between the sleeve 201 and the valve seat 18 along a direction far from the closing of the sleeve 201, after the valve seat 18 is abutted against a ball 17, under the action of the tight abutting spring 403, close contact is kept between the sealing gasket 401 and a supporting step on the sleeve 201, and the sealing gasket 401 and the tight abutting spring 403, and the sealing gasket 18 are sealed well, and air leakage between the sleeve 201 and the valve seat 18 is avoided during detection.

The output end of the driving element 202 is connected with the closed end of the sleeve 201 to drive the sleeve 201 to approach or separate from the sphere 17, the driving element 202 can be one of a hydraulic cylinder, an air cylinder or an electric push rod, in this embodiment, the hydraulic cylinder is preferable, specifically, both ends of the working platform 15 are provided with fixing plates 16, the hydraulic cylinder is installed on the fixing plates 16, oil is fed and discharged through corresponding oil feeding pipes and oil discharging pipes, so that the expansion and contraction of a piston rod are realized, the sleeve 201 and the valve seat 18 can be integrally close to the sphere 17 by extending the piston rod of the hydraulic cylinder before detection, the valve seat 18 is further abutted and fixed with the sphere 17, and the valve seat 18 can be separated from the sphere 17 by retracting the piston rod of the hydraulic cylinder after detection.

A guide seat 5 is connected between the closed end of the sleeve 201 and the output end of the driving element 202, for convenience of connection, a trapezoidal screw rod 19 can be further arranged between the output end of the driving element 202 and the guide seat 5, one end of the trapezoidal screw rod 19 is connected with the output end of the driving element 202 through threads, the other end of the trapezoidal screw rod 19 is connected with a flange 20 through threads, and the flange 20 is connected with the guide seat 5 through a fastener (such as a screw). The guide rods 6 are fixedly arranged on two sides of the sleeve 201, specifically, the guide rods 6 are fixedly connected between the two fixing plates 16, the two clamping units 2 can share the guide rods 6, guide holes are formed in the guide bases 5, the guide rods 6 are in sliding fit with the guide holes, and further, linear bearings are arranged in the guide holes, so that sliding is smooth, and abrasion between the guide rods 6 and the guide holes is avoided. It should be noted that the arrangement of the guide seat 5 and the guide rod 6 allows the sleeve 201 and the valve seat 18 as a whole to be radially offset during the displacement under the action of the driving element 202, ensuring a reliable abutment between the valve seat 18 and the ball 17.

The side wall of the sleeve 201 is provided with an air inlet communicated with the cavity of the valve seat 18, the air inlet is connected with the ventilation assembly 3, so that the air inlet is led into the cavity of the valve seat 18, and it is easy to understand that one valve seat 18 is correspondingly provided with a group of ventilation assemblies 3, specifically, the ventilation assembly 3 of this embodiment comprises a tee joint 301, an air inlet pipe 302, an exhaust pipe 303 and a connecting pipe 304, the tee joint 301 is fixed on a fixed plate 16, a pressure gauge 305 can be further arranged on the tee joint 301 to detect pressure, the air inlet pipe 302, the exhaust pipe 303 and the connecting pipe 304 are correspondingly connected with three ports of the tee joint 301, one end of the connecting pipe 304 far away from the tee joint 301 is connected with the air inlet, an air inlet valve is correspondingly arranged on the air inlet pipe 302, an exhaust valve is correspondingly arranged on the exhaust pipe 303, and when in use, after the clamping unit 2 drives the valve seat 18 to be in butt joint fixation with a sphere 17, ventilation can be carried out in the cavity of the valve seat 18 through connecting the air inlet pipe 302 through peripheral ventilation equipment (not shown).

In addition, since high-pressure gas is generally introduced during detection, the exhaust pipe 303 and the exhaust valve provided in the embodiment can close the air inlet valve and open the exhaust valve when the air tightness between the valve seat 18 and the ball 17 is detected to meet the requirement, thereby discharging the high-pressure gas in the cavity of the valve seat 18 and avoiding safety accidents when the valve seat 18 is separated from the ball 17.

Referring to fig. 3 again, the inner end of the sleeve 201 is provided with a pull plate 7, the pull plate 7 is provided with a step for propping against one end of the valve seat 18 extending into the sleeve 201, the center of the pull plate 7 is provided with a threaded hole, after detection is completed, the valve seat 18 can be pulled out from the sleeve 201 by pulling the pull rod outwards through a pull rod (not shown in the drawing, or the pull rod can be a section of threaded rod or a screw or bolt with a proper length) connected with the threaded hole, i.e. the valve seat 18 is taken out after the detection is convenient for the setting of the pull plate 7.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a quick check out test set of metal seal wear-resisting ball valve sealing performance, includes support piece (1) that are used for supporting location spheroid (17), is used for centre gripping disk seat (18) centre gripping unit (2) and is used for ventilating subassembly (3) to ventilation in disk seat (18) cavity, its characterized in that: the clamping unit (2) comprises a sleeve (201) and a driving element (202), one end of the sleeve (201) is closed, a valve seat (18) is embedded in the sleeve (201), a sealing part (4) is arranged between the valve seat (18) and the sleeve (201), an air inlet communicated with the cavity of the valve seat (18) is arranged on the side wall of the sleeve (201), and the air inlet is connected with the ventilation assembly (3); the output end of the driving element (202) is connected with the closed end of the sleeve (201) to drive the sleeve (201) to approach or separate from the ball (17).

2. The rapid detection device for the sealing performance of a metal hard sealing wear-resistant ball valve according to claim 1, wherein the rapid detection device comprises: guide seats (5) are connected between the closed ends of the sleeves (201) and the output ends of the driving elements (202), guide rods (6) are fixedly arranged on two sides of the sleeves (201), guide holes are formed in the guide seats (5), and the guide rods (6) are in sliding fit with the guide holes.

3. The rapid detection device for the sealing performance of a metal hard sealing wear-resistant ball valve according to claim 2, wherein: and a linear bearing is arranged in the guide hole.

4. The rapid detection device for the sealing performance of a metal hard sealing wear-resistant ball valve according to claim 1, wherein the rapid detection device comprises: the inner end of the sleeve (201) is provided with a pull plate (7), the pull plate (7) is provided with a step which is used for propping against one end of the valve seat (18) extending into the sleeve (201), and the center of the pull plate (7) is provided with a threaded hole.

5. The rapid detection device for the sealing performance of the metal hard sealing wear-resistant ball valve according to any one of claims 1 to 4, wherein the rapid detection device is characterized in that: the support piece (1) is in rotary fit with a lower valve rod hole of the ball body (17).

6. The rapid detection device for the sealing performance of the metal hard sealing wear-resistant ball valve according to claim 5, wherein the rapid detection device is characterized in that: one side of the support piece (1) is fixedly provided with a support seat (8), the top of the support seat (8) is rotationally connected with a cantilever (9), a rotating rod (10) is rotationally arranged on the cantilever (9), and the lower end of the rotating rod (10) can be matched with an upper valve rod hole of the sphere (17).

7. The rapid detection device for the sealing performance of the metal hard sealing wear-resistant ball valve according to claim 6, wherein the rapid detection device comprises: the cantilever (9) is provided with an anti-rotation rod (11), and the top of the supporting seat (8) is provided with an anti-rotation hole which can be matched with the anti-rotation rod (11).

8. The rapid detection device for the sealing performance of the metal hard sealing wear-resistant ball valve according to claim 6, wherein the rapid detection device comprises: the lower end of the rotating rod (10) is sleeved on the replaceable conversion head (12).

9. The rapid detection device for the sealing performance of the metal hard sealing wear-resistant ball valve according to any one of claims 1 to 4, wherein the rapid detection device is characterized in that: the ventilation assembly (3) comprises a tee joint (301), an air inlet pipe (302), an air outlet pipe (303) and a connecting pipe (304), wherein the air inlet pipe (302), the air outlet pipe (303) and the connecting pipe (304) are connected with three ports of the tee joint (301) in one-to-one correspondence, and one end of the connecting pipe (304) far away from the tee joint (301) is connected with the air inlet.

10. The rapid detection device for the sealing performance of the metal hard sealing wear-resistant ball valve according to any one of claims 1 to 4, wherein the rapid detection device is characterized in that: the driving element (202) is one of a hydraulic cylinder, a cylinder or an electric push rod.