CN117646814B - Angle type stop check valve structure and test equipment - Google Patents

Abstract

The application relates to an angle type stop check valve structure and test equipment, which comprises a valve body, wherein a valve cavity is formed in the valve body, a first water port and a second water port are formed in the valve body, a sliding cylinder is arranged in the valve cavity, two ends of the sliding cylinder are respectively communicated with the first water port and an overhaul port, a communication port is formed in the side wall of the sliding cylinder, a valve clack is connected in the sliding cylinder in a sliding manner, the sliding cylinder is internally divided into a rod cavity and a rodless cavity by the valve clack, a sealing ring for preventing fluid from entering the rod cavity is arranged between the inner wall of the sliding cylinder and the valve clack, the valve rod is always positioned in the rod cavity in the process of realizing functions of the stop check valve, the sealing ring can prevent the fluid from entering the rod cavity, and the valve rod is always in a dry state. The application has the effect of preventing the valve rod from being corroded by special fluid.

Description

Angle type stop check valve structure and test equipment

Technical Field

The application relates to the field of stop check valves, in particular to an angle type stop check valve structure and test equipment.

Background

The stop check valve has the functions of both a stop valve and a check valve. The structure is similar to that of a stop valve, but the valve rod is not fixedly connected with the valve clack. When the valve rod descends to tightly press the valve clack on the valve seat, the valve rod plays a role of a stop valve; after the valve rod rises, the valve rod plays a role of a check valve. The use of the stop check valve can save installation costs and space locations on a pipe where both the stop valve and the check valve are required to be installed, or where the installation location is limited. Because the safety standard of the valve is higher, pressure test is needed before the delivery of the valve after production, the sealing performance of the valve is detected, and a valve detection table is usually used for detecting the valve in cooperation with the valve.

A valve test stand is a device for testing and verifying valve performance and sealing performance. Typically comprising a test bench, hydraulic system, control system and measuring instruments. Through hydraulic system, the test bench can simulate different pressures and mediums to test sealing performance and withstand voltage performance of valve under different operating modes. The control system may be used to control the test process and record test data. The measuring instrument is used for measuring parameters such as opening and closing force, leakage amount, sealing performance and the like of the valve.

The related art can refer to Chinese patent publication No. CN112524299A for disclosing a marine stop check valve, comprising a valve body, a valve cover, a valve rod, a valve clack, a first sealing component, a second sealing component and a packing compressing component, wherein the valve cover is arranged on the valve body and used for sealing a valve cavity, and the valve cover and the valve body are sealed through the second sealing component; the first end of the valve rod is positioned outside the valve body, the second end of the valve rod extends into the valve cavity of the valve body, and the valve clack is movably sleeved at the second end of the valve rod; the valve rod penetrates through the valve cover, and the valve rod and the valve cover are sealed through a first sealing assembly; the first sealing assembly comprises a packing layer and a first sealing element, a sealing groove is formed in the valve cover, and the packing layer and the first sealing element are both arranged in the sealing groove; the packing pressing assembly is sleeved on the valve rod and comprises a packing pressing sleeve and a packing pressing plate, wherein the packing pressing sleeve part extends into the sealing groove to press the packing layer, and the packing pressing plate is connected with the valve cover or the valve body.

For the related art, when the stop check valve is in the stop valve state, fluid entering the valve cavity can be in direct contact with the valve rod, the valve rod is soaked in the fluid for a long time, and the special fluid can corrode the surface of the valve rod, so that the smoothness of the surface of the valve rod is influenced, and further the opening and closing operation of the stop check valve is influenced.

Disclosure of Invention

In order to avoid corrosion of a valve rod of the stop check valve by special fluid, the application provides an angle type stop check valve structure and test equipment.

The first aspect of the application provides an angular stop check valve structure, which adopts the following technical scheme:

The utility model provides an angle stop check valve structure and test equipment, includes the valve body, has seted up the valve pocket in the valve body, has seted up first water port, second water port and the access hole with the valve pocket intercommunication on the valve body, access hole department is equipped with the valve gap that is used for sealing the access hole, threaded connection has the valve rod that extends to in the valve pocket on the valve gap, is equipped with the slide in the valve pocket, and the both ends of slide are respectively with first water port and access hole intercommunication, offer the intercommunication mouth that is used for fluid to flow from first water port to second water port on the lateral wall of slide, sliding connection has the valve clack in the slide, and the valve clack will slide the interior part of section of thick bamboo be had pole chamber and rodless chamber, is equipped with the sealing washer that is used for preventing that fluid from getting into pole chamber between the inner wall and the valve clack of slide, has the joint groove that is equipped with in the stop collar that is used for preventing that the valve clack from deviating from in the slide, when valve clack and stop collar butt, with the stop collar, with the valve clack, the effect that the valve clack has the trend of sliding to be close to the stop collar orientation under self gravity.

Through adopting above-mentioned technical scheme, rotate the valve rod, make the valve rod advance to being close to the valve clack direction precession, until valve rod extrusion valve clack and make valve clack and spacing ring butt, the intercommunication mouth is sealed by the valve clack, and the fluid flow can't circulate between first water port and second water port, realizes the function of stop valve. The valve rod is rotated, the valve rod is screwed in the direction away from the valve clack, the valve clack loses the limit of the valve rod, when fluid enters through the first water through hole, the fluid flow enters the rodless cavity and drives the valve clack to slide in the direction away from the limit ring, the communication hole is restored to an unblocked state, the fluid from the first water through hole can enter the second water through the communication hole, the valve is conducted, when the fluid enters through the second water through hole, the valve clack is abutted to the limit ring under the action of self gravity, the communication hole is closed, the valve is blocked in one direction, and the function of the check valve is realized. The valve rod is located the pole intracavity all the time, is provided with the sealing washer between the inner wall of slide tube and the valve clack, can prevent that fluid from getting into the pole intracavity, and the valve rod is in dry state all the time, helps avoiding the valve rod to receive the corruption of special fluid.

Optionally, be equipped with the sealing gasket that is used for improving sealing performance in the joint groove, sealing gasket both sides respectively with the diapire in joint groove with the tip butt of a smooth section of thick bamboo.

Through adopting above-mentioned technical scheme, sealed pad adopts soft rubber material to make, has good elasticity, and then can obtain good leakproofness when extrudeing sealed pad, and sealed pad butt is between joint groove diapire and smooth section of thick bamboo, helps improving the sealing performance between joint groove diapire and the smooth section of thick bamboo, and then the stop performance of reinforcing valve.

In a second aspect, the application further provides an angular stop check valve testing device, which adopts the following technical scheme:

The utility model provides an angle check valve test equipment, contains foretell angle check valve structure, still includes the test bench, be equipped with on the test bench and be used for the first butt joint with the valve body butt joint, test bench sliding connection has the slip table, the slip direction of slip table is on a parallel with the orientation of first butt joint, be equipped with on the slip table be used for with the second butt joint of valve body butt joint, the space orientation mutually perpendicular of first butt joint and second butt joint is equipped with on the test bench and is used for compressing tightly valve body and first butt joint first hold-down mechanism, be equipped with on the slip table and be used for compressing tightly valve body and second butt joint second hold-down mechanism.

By adopting the technical scheme, the included angle between the first water port and the second water port of the angle type stop check valve is ninety degrees, and the angle type stop check valve is difficult to test by a common valve test bench.

Optionally, the first hold-down mechanism includes a plurality of first hydraulic cylinder, and first hydraulic cylinder encircles first butt joint setting and along the radial sliding connection of first butt joint on the test bench, be equipped with on the test bench and be used for driving first hydraulic cylinder gliding first mobile cylinder, be equipped with the first joint piece that is used for the flange position of joint valve body on the telescopic link of first hydraulic cylinder.

Through adopting above-mentioned technical scheme, after being fixed in the slip table with the angle check valve, slide the slip table to being close to the direction of first butt joint, until valve body and first butt joint butt intercommunication, first hydraulic cylinder of first movable cylinder drive slides to being close to the direction of first butt joint, make the joint end of joint piece remove to the position that can with the flange joint of valve body, shrink first hydraulic cylinder's telescopic link, drive the joint piece and remove to the flange direction that is close to the valve body, until the flange butt of joint piece and valve body, help realizing the quick connect of first butt joint and valve body.

Optionally, the second hold-down mechanism includes a plurality of second hydraulic cylinder, and the second hydraulic cylinder encircles the setting of second butt joint and radially sliding connection on the slip table along the second butt joint, is equipped with the second movable cylinder that is used for driving the gliding second hydraulic cylinder on the slip table, is equipped with the second joint piece that is used for the flange position of joint valve body on the telescopic link of second hydraulic cylinder.

Through adopting above-mentioned technical scheme, lift by crane the angle check valve to directly over the slip table, adjust the space orientation of angle check valve, make valve body and second butt joint butt intercommunication, second movable cylinder drive second hydraulic cylinder slides to the direction that is close to the second butt joint, make the joint end of joint piece remove to the position that can with the flange joint of valve body, shrink second hydraulic cylinder's telescopic link, drive the joint piece and remove to the flange direction that is close to the valve body, until the flange butt of joint piece and valve body, help realizing the quick connect of second butt joint and valve body.

Optionally, the slip table is last to rotate and is connected with the adjustment table, and the axis of rotation of adjustment table is on a parallel with the orientation of second butt joint, and second butt joint and second hold-down mechanism all set up on the adjustment table.

Through adopting above-mentioned technical scheme, rotate on the slip table and be connected with adjustment table and second butt joint and second hold-down mechanism all set up in adjustment table, when angle formula check valve and second butt joint are connected, can not consider the angle of angle formula check valve, when being connected with first butt joint, adjust angle formula check valve to suitable angle at rotation adjustment table. The testing efficiency of the angle type stop check valve is improved.

Optionally, the second joint piece rotates to be connected to the telescopic link of second hydraulic cylinder, and second joint piece fixedly connected with is with the driven bevel gear of the coaxial setting of telescopic link of second hydraulic cylinder, rotates on the telescopic link of second hydraulic cylinder to be connected with the drive bevel gear with driven bevel gear meshing. The drive bevel gear is fixedly connected with adjusting gear coaxially, adjusting rack is fixedly connected with on the adjusting table, torsion springs for resetting the second clamping blocks are connected between the adjusting gear and the telescopic rods of the second hydraulic cylinders, when the torsion springs are in a natural state, the clamping ends of the second clamping blocks are located on one side, deviating from the second butt joint, of the telescopic rods of the second hydraulic cylinders, when the telescopic rods of the second hydraulic cylinders shrink, the adjusting gear moves towards the direction, close to the adjusting rack, and is meshed with the first adjusting rack, the adjusting rack drives the adjusting gear to rotate, and when the second clamping blocks are in butt joint with the flanges of the valve body, the clamping ends of the second clamping blocks are located on one side, close to the second butt joint, of the telescopic rods of the second hydraulic cylinders.

Through adopting above-mentioned technical scheme, the second fixture block rotates to be connected on the telescopic link of second hydraulic cylinder, and the torsional spring is in when natural state, and the joint end of second joint piece is located the telescopic link of second hydraulic cylinder and deviates from second butt joint one side, can reduce the influence that the diagonal type stop check valve was followed to minimum. When the telescopic rod of the second hydraulic oil cylinder contracts, the adjusting gear moves towards the direction close to the adjusting rack and is meshed with the first adjusting rack, the adjusting rack drives the adjusting gear to rotate, when the second clamping block is in butt joint with the flange of the valve body, the clamping end of the second clamping block is located on one side, close to the second butt joint, of the telescopic rod of the second hydraulic oil cylinder, and automatic rotation of the second clamping block can be achieved through the fixed angle type stop check valve. The second snap block helps to reduce the effect of the second snap block on the corner stop check valve.

Optionally, the telescopic link of second hydraulic cylinder is close to second butt joint one end sliding connection has the butt piece that is used for making second butt joint and the flange alignment of valve body, and adjusting gear coaxial fixedly connected with is used for driving the gliding threaded rod of butt piece, and when the telescopic link of second hydraulic cylinder contracts, threaded rod drive butt piece slides to the direction that is close to second butt joint, and when the flange butt of second joint piece and valve body, the butt piece is simultaneously butt with the flange of second butt joint and valve body.

Through adopting above-mentioned technical scheme, when the telescopic link shrink of second hydraulic cylinder, threaded rod drive butt piece slides to the direction that is close to the second butt joint, and when the flange butt of second joint piece and valve body, butt piece and the simultaneous butt of second butt joint can realize the flange of valve body and the automatic alignment of second butt joint when connecting, helps further improving the test efficiency of angle formula check valve.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The valve rod is screwed in the direction close to the valve clack until the valve rod extrudes the valve clack and enables the valve clack to be abutted against the limiting ring, the communicating port is closed by the valve clack, the function of the stop valve is realized, the valve rod is screwed in the direction far away from the valve clack, the valve clack loses the limit of the valve rod, when fluid enters through the first communicating port, the fluid flow enters the rodless cavity and drives the valve clack to slide in the direction far away from the limiting ring, the communicating port is restored to an unblocked state, the fluid from the first communicating port can enter the second communicating port through the communicating port, the valve is conducted, when the fluid enters through the second communicating port, the valve clack is abutted against the limiting ring under the action of self gravity, the communicating port is closed, the valve is blocked in a one-way, the function of the check valve is realized, the valve rod is always positioned in the rod cavity, a sealing ring is arranged between the inner wall of the sliding cylinder and the valve clack, the fluid is prevented from entering the rod cavity, and the valve rod is always in a dry state, and the corrosion of the valve rod of the stop check valve is helped;

2. The included angle between the first water port and the second water port of the angle type stop check valve is ninety degrees, the angle type stop check valve is suitable for some special use conditions, a common valve test board is usually designed and manufactured for a standard straight-through valve, the angle type stop check valve is difficult to directly test, the space orientations of the first butt joint and the second butt joint are mutually perpendicular, the included angle between the first water port and the second water port of the angle type stop check valve can be adapted, and the factory test of the angle type stop check valve is convenient to carry out.

Drawings

Fig. 1 is a schematic view of the overall structure of an angle type stop check valve structure.

Fig. 2 is a schematic view of the internal structure of an angle stop check valve structure.

Fig. 3 is an enlarged schematic view of the portion a in fig. 2.

Fig. 4 is a schematic view of the overall structure of an angular stop check valve test apparatus.

Fig. 5 is a schematic view of the internal structure of an angular stop check valve test apparatus.

Fig. 6 is a schematic view showing an internal structure of the second pressing mechanism in the angular stop check valve test apparatus.

Fig. 7 is an enlarged schematic view of the portion B in fig. 4.

Reference numerals illustrate: 1. a valve body; 11. a valve cavity; 12. a first water port; 13. a second water port; 14. an access opening; 15. a clamping groove; 151. a limiting ring; 152. a sealing gasket; 2. a valve cover; 3. a valve stem; 4. a slide cylinder; 41. a communication port; 42. a rod cavity is arranged; 43. a rodless cavity; 44. a seal ring; 5. a valve flap; 6. a test bench; 61. a first pair of joints; 62. a first hold-down mechanism; 621. a first hydraulic cylinder; 622. a first mobile oil cylinder; 623. a first clamping block; 7. a sliding table; 71. a second pair of joints; 72. a second hold-down mechanism; 721. a second hydraulic cylinder; 7211. driving a bevel gear; 7212. an adjusting gear; 7213. a torsion spring; 7214. an abutment block; 7215. a threaded rod; 722. a second mobile oil cylinder; 723. a second clamping block; 7231. a driven bevel gear; 73. an adjustment table; 731. and adjusting the rack.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings.

The first aspect of the present application discloses an angular stop check valve structure.

Referring to fig. 1 and 2, an angular stop check valve structure and a testing device, which comprises a valve body 1, wherein the valve body 1 is integrally formed by adopting a cast iron process, and a valve cavity 11 is arranged in the valve body 1. The valve body 1 is provided with a first water port 12, a second water port 13 and an overhaul port 14 which are communicated with the valve cavity 11, flanges which are used for being connected with pipelines are arranged at the first water port 12 and the second water port 13, the overhaul port 14 is used for installing and overhauling parts into the valve cavity 11, and the valve body 1 is connected with a valve cover 2 which is used for sealing the overhaul port 14 through bolts. The valve cover 2 is connected with a valve rod 3 in a threaded manner, and the valve rod 3 extends into the valve cavity 11. In the conventional stop check valve configuration, the fluid entering the valve cavity 11 is in direct contact with the valve rod 3, so that rust on the surface of the valve rod 3 is aggravated, the smoothness of the surface of the valve rod 3 is affected, and the opening and closing operation of the stop check valve is further affected. The valve rod 3 is isolated from fluid, and the valve rod 3 is always in a dry state, so that the valve rod 3 is prevented from being corroded by special fluid.

Referring to fig. 2 and 3, a slide cylinder 4 is disposed in the valve cavity 11, a clamping groove 15 is formed in the valve body 1, and the slide cylinder 4 is abutted between the valve cover 2 and the bottom wall of the clamping groove 15. The two ends of the sliding cylinder 4 are respectively communicated with the first water through hole 12 and the overhaul hole 14, a communication hole 41 for fluid to flow from the first water through hole 12 to the second water through hole 13 is formed in the side wall of the sliding cylinder 4, and the first water through hole 12 can only enter the valve cavity 11 and the second water through the communication hole 41. The valve clack 5 is connected in a sliding way in the sliding cylinder 4, the shape and the size of the valve clack 5 are matched with those of the inner wall of the sliding cylinder 4, the valve clack 5 divides the inner part of the sliding cylinder 4 into a rod cavity 42 and a rodless cavity 43, and a sealing ring 44 is arranged between the inner wall of the sliding cylinder 4 and the valve clack 5, so that fluid can be prevented from entering the rod cavity 42 from the rodless cavity 43. The valve rod 3 is always positioned in the rod cavity 42, so that the valve rod 3 is always in a dry state.

Referring to fig. 2 and 3, a limiting ring 151 is disposed in the clamping groove 15, so as to prevent the valve clack 5 from being separated from the slide cylinder 4, and the valve clack 5 can slide in a range between the limiting ring 151 and the valve rod 3. When the valve clack 5 is in the abutting position with the limiting ring 151, the side wall of the valve clack 5 seals the communication port 41, the first water port 12 is isolated from the second water port 13, and the valve rod 3 is screwed until the valve rod 3 abuts against the valve clack 5, so that the valve clack 5 can be limited in a state of sealing the communication port 41, and the function of the stop valve can be realized. The valve rod 3 is screwed in the direction far away from the valve clack 5, the valve rod 3 is separated from the valve clack 5, the valve clack 5 obtains a sliding range to a certain extent, and the valve clack 5 has a tendency to slide in the direction close to the limiting ring 151 under the action of self gravity. When fluid enters through the first water through hole 12, the fluid flows into the rodless cavity 43 and drives the valve clack 5 to slide in a direction away from the limiting ring 151, the communication hole 41 is restored to an unblocked state, and the fluid from the first water through hole 12 can enter the second water through hole 13 through the communication hole 41, so that the conduction of the valve is realized. When fluid enters through the second water through hole 13, the valve clack 5 is abutted against the limiting ring 151 under the action of gravity, the communication hole 41 is closed, and the valve is blocked in one direction, so that the function of the check valve is realized.

Referring to fig. 2 and 3, in performing the function of the shut-off valve, the valve needs to withstand a large fluid pressure, and thus the valve needs to have a certain sealing performance. The sealing gasket 152 is arranged in the clamping groove 15, the sealing gasket 152 is made of soft rubber materials, good elasticity is achieved, good sealing performance can be achieved when the sealing gasket 152 is extruded, the sealing gasket 152 is abutted between the bottom wall of the clamping groove 15 and the sliding cylinder 4, sealing performance between the bottom wall of the clamping groove 15 and the sliding cylinder 4 is improved, and further the cut-off performance of the valve is enhanced.

The implementation principle of the angle type stop check valve structure provided by the embodiment of the application is as follows: both ends of the angle type stop check valve are connected with a pipeline through flanges and bolts, the valve rod 3 is screwed into a position abutting against the valve clack 5, the valve clack 5 is simultaneously abutted against the limiting ring 151, the communication port 41 is sealed by the valve clack 5, the sliding of the valve clack 5 is limited, the fluid flow cannot circulate between the first water through port 12 and the second water through port 13, and the function of the stop valve is realized. The valve rod 3 is screwed into the direction far away from the valve clack 5, the valve clack 5 obtains a sliding space with a certain range, when fluid enters through the first water through hole 12, the fluid flows into the rodless cavity 43 and drives the valve clack 5 to slide in the direction far away from the limiting ring 151, the communication hole 41 is restored to an unblocked state, the fluid from the first water through hole 12 can enter the second water through hole 13 through the communication hole 41, the valve is conducted, when the fluid enters through the second water through hole 13, the valve clack 5 is abutted against the limiting ring 151 under the action of self gravity, the communication hole 41 is closed, and the valve is blocked in one direction, so that the function of the check valve is realized. The valve rod 3 is always positioned in the rod cavity 42, and the sealing ring 44 is arranged between the inner wall of the sliding cylinder 4 and the valve clack 5, so that fluid can be prevented from entering the rod cavity 42, and the valve rod 3 is always in a dry state, thereby being beneficial to avoiding the valve rod 3 from being corroded by special fluid and prolonging the service life of the valve rod 3.

The second aspect of the application also provides an angular stop check valve testing apparatus.

Referring to fig. 4, an angular stop check valve test apparatus including an angular stop check valve structure as described above further includes a test bench 6, the test bench 6 being a structure supporting the entire test apparatus, made of steel or aluminum alloy, having sufficient strength and stability to support pressure and force during the test. The test bench 6 is provided with a first butt joint 61 for being in butt joint with the valve body 1, the first butt joint 61 is connected with a hydraulic system and a corresponding control system is arranged, the hydraulic system comprises a hydraulic pump, an oil tank, a pressure gauge, a valve and a pipeline system, and different pressures and flows can be generated to simulate medium flow and pressure conditions under different working conditions. The control system is used for controlling the testing process, including controlling the pressure and flow of the hydraulic system, recording the testing data, and monitoring various parameters in the testing process. The control system generally comprises a control panel, a PLC controller, sensors, actuators and the like. The foregoing are all prior art and are not described in any great detail in the present application. In order to adapt to special use conditions, the included angle between the first water port 12 and the second water port 13 of the angle type stop check valve is ninety degrees, and the angle type stop check valve is difficult to directly test by a common valve test bench. The application is helpful for more conveniently carrying out the factory test of the angle type stop check valve by improving the structure of the traditional testing equipment.

Referring to fig. 4 and 5, a slide table 7 is slidably coupled to the test bench 6, and a sliding direction of the slide table 7 is parallel to a spatial orientation of the first pair of joints 61. The sliding table 7 is provided with a second butt joint 71 for butt joint with the valve body 1 and sealing the valve body 1. The test bench 6 is provided with a first pressing mechanism 62 for pressing the valve body 1 against the first butt joint 61, and the slide table 7 is provided with a second pressing mechanism 72 for pressing the valve body 1 against the second butt joint 71. The first butt joint 61 and the second butt joint 71 are mutually perpendicular in space orientation, so that the included angle between the first water inlet 12 and the second water inlet 13 of the angle type stop check valve can be adapted, and the factory test of the angle type stop check valve can be conveniently carried out.

Referring to fig. 5, the first pressing mechanism 62 includes three first hydraulic cylinders 621, but may be other numbers, and a first clamping block 623 for clamping a flange portion of the valve body 1 is provided on a telescopic rod of the first hydraulic cylinders 621. The first hydraulic cylinders 621 are uniformly arranged around the circumference of the first butt joint 61 and are connected to the test bench 6 in a sliding manner along the radial direction of the first butt joint 61, the test bench 6 is provided with first movable cylinders 622 corresponding to the first hydraulic cylinders 621 one by one, and telescopic rods of the first movable cylinders 622 are fixedly connected with the first hydraulic cylinders 621 and used for driving the first hydraulic cylinders 621 to slide. After the angle type stop check valve is fixed on the sliding table 7, the sliding table 7 is driven to slide towards the direction close to the first butt joint 61 until the valve body 1 is in abutting connection with the first butt joint 61, the first moving oil cylinder 622 drives the first hydraulic oil cylinder 621 to slide towards the direction close to the first butt joint 61, the clamping end of the clamping block is enabled to move to a position capable of being clamped with the flange of the valve body 1, the telescopic rod of the first hydraulic oil cylinder 621 is contracted, the clamping block is driven to move towards the direction close to the flange of the valve body 1 until the clamping block is abutted with the flange of the valve body 1, and the abutting connection state of the valve body 1 and the first butt joint 61 is locked, so that quick connection between the first butt joint 61 and the valve body 1 is facilitated.

Referring to fig. 4 and 5, the second pressing mechanism 72 includes three second hydraulic cylinders 721, and may be other numbers, and a second engaging block 723 for engaging with a flange portion of the valve body 1 is provided on a telescopic rod of the second hydraulic cylinders 721. The second hydraulic cylinders 721 are uniformly arranged in the circumferential direction of the second pair of joints 71, and are slidably connected to the slide table 7 in the radial direction of the second pair of joints 71. The sliding table 7 is provided with second movable oil cylinders 722 which are in one-to-one correspondence with the second hydraulic oil cylinders 721, and a telescopic rod of the second movable oil cylinders 722 is fixedly connected with the second hydraulic oil cylinders 721 and used for driving the second hydraulic oil cylinders 721 to slide. The angle check valve is suspended to the position right above the sliding table 7 by using a crane, and the space orientation of the angle check valve is adjusted so that the first water port 12 or the second water port 13 is in contact communication with the second butt joint 71. The second moving cylinder 722 drives the second hydraulic cylinder 721 to slide towards the direction close to the second butt joint 71, so that the clamping end of the clamping block moves to a position capable of being clamped with the flange of the valve body 1, the telescopic rod of the second hydraulic cylinder 721 is contracted, the clamping block is driven to move towards the direction close to the flange of the valve body 1 until the clamping block is abutted with the flange of the valve body 1, and the abutting connection state of the valve body 1 and the first butt joint 61 is locked, so that the quick connection of the second butt joint 71 and the valve body 1 is facilitated.

Referring to fig. 5, during testing, the angle check valve is connected to the second abutment 71 first, and in order to ensure that the angle check valve can be successfully abutted to the first abutment 61 in the later stage, the angle check valve connected to the second abutment 71 needs to be aligned with the first abutment 61 at the same time, the alignment requires a certain time for a worker, and if deviation occurs in alignment, the angle check valve needs to be separated from the second abutment 71 and re-abutted. The sliding table 7 is rotatably connected with an adjusting table 73, the rotation axis of the adjusting table 73 is parallel to the direction of the second butt joint 71, and the second butt joint 71 and the second pressing mechanism 72 are both arranged on the adjusting table 73. In the application, the adjusting table 73 is rotatably connected to the sliding table 7, and the second butt joint 71 and the second pressing mechanism 72 are both arranged on the adjusting table 73 and can integrally rotate together with the adjusting table 73. When the angle check valve is connected to the second butt joint 71, the angle of the angle check valve can be directly fixed irrespective of the angle check valve, and when the angle check valve is connected to the first butt joint 61, the angle check valve is adjusted to a proper angle by rotating the adjusting table 73, so that the time for alignment can be saved, and the testing efficiency of the angle check valve can be improved.

Referring to fig. 5 and 6, in order to engage with the flange portion of the valve body 1, one end of the second engagement block 723, which is required to be in contact with the flange of the valve body 1, is generally longer than the other end, and when the angle type stop check valve is lifted to a position where it engages with the second abutment 71, the longer end of the second engagement block 723 causes a certain interference with the movement of the angle type stop check valve, and the sliding range of the second hydraulic cylinder 721 needs to be increased, thereby affecting the detection efficiency. In the application, the second clamping block 723 is rotatably connected to the telescopic rod of the second hydraulic cylinder 721, and the position of the longer end of the second clamping block 723 can be changed by rotating the second clamping block 723, so that the influence on the passing of the valve body 1 is reduced.

Referring to fig. 5 and 7, the second clamping block 723 is fixedly connected with a driven bevel gear 7231, the driven bevel gear 7231 is coaxially arranged with a telescopic rod of the second hydraulic cylinder 721, a driving bevel gear 7211 meshed with the driven bevel gear 7231 is rotatably connected with the telescopic rod of the second hydraulic cylinder 721, the driving bevel gear 7211 is coaxially and fixedly connected with an adjusting gear 7212, and an adjusting rack 731 is fixedly connected with the adjusting table 73. A torsion spring 7213 is connected between the adjusting gear 7212 and the telescopic rod of the second hydraulic cylinder 721, and when the torsion spring 7213 is in a natural state, the longer end of the second clamping block 723 is positioned at one side of the telescopic rod of the second hydraulic cylinder 721, which is away from the second butt joint 71, so that the influence of the diagonal stop check valve from the past can be reduced to the minimum.

Referring to fig. 5 and 7, when the telescopic rod of the second hydraulic cylinder 721 is contracted, the adjusting gear 7212 moves in a direction approaching to the adjusting gear 731 and is engaged with the first adjusting gear 731, the adjusting gear 731 drives the adjusting gear 7212 to rotate, the adjusting gear 7212 drives the driving bevel gear 7211 to rotate, the driving bevel gear 7211 drives the driven bevel gear 7231 to rotate, and further drives the second clamping block 723 to rotate, and when the second clamping block 723 abuts against the flange of the valve body 1, the longer end of the second clamping block 723 is located on the side, approaching to the second butt joint 71, of the telescopic rod of the second hydraulic cylinder 721. The automatic rotation of the second catching block 723 may be achieved when the angle type stop check valve is fixed.

Referring to fig. 5, 6 and 7, in order to ensure tightness after communication between the second abutment 71 and the valve body 1, a worker usually needs to adjust the flange of the valve body 1 to a position aligned with the second abutment 71 at the time of connection. The telescopic rod of the second hydraulic cylinder 721 is connected with an abutting block 7214 in a sliding manner on one side, close to the second butt joint 71, of the abutting block 7214, the abutting block 7214 slides along the radial direction of the second butt joint 71, the adjusting gear 7212 is coaxially and fixedly connected with a threaded rod 7215, the length direction of the threaded rod 7215 is parallel to the sliding direction of the abutting block 7214, the threaded rod 7215 is in threaded connection with the abutting block 7214, and the sliding of the abutting block 7214 can be driven and controlled by rotating the threaded rod 7215. When the expansion link of the second hydraulic cylinder 721 is contracted, the adjusting gear 7212 rotates the threaded rod 7215, and the rotating threaded rod 7215 drives the abutment block 7214 to slide in a direction approaching the second abutment 71 until the abutment block 7214 simultaneously abuts against the second abutment 71 when the second engagement block 723 abuts against the flange of the valve body 1. The flange of the valve body 1 can be automatically adjusted to a position aligned with the second abutment 71 at the time of connection, which contributes to further improving the test efficiency of the angle check valve.

The implementation principle of the angular stop check valve test equipment provided by the embodiment of the application is as follows: the valve body 1 of the produced angle stop check valve is abutted and communicated with the second butt joint 71, fixed by the second pressing mechanism 72, the sliding table 7 is slid in the direction approaching the first butt joint 61, when the valve body 1 approaches the first butt joint 61, the adjusting table 73 is rotated, the valve body 1 is adjusted to a position capable of being aligned with the first butt joint, the valve body 1 is abutted and communicated with the first butt joint 61, fixed by the first pressing mechanism 62, and the test is started.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (5)

1. An angular check valve test equipment, its characterized in that: comprises a test bench (6), a first butt joint (61) for butt joint with a valve body (1) is arranged on the test bench (6), a sliding table (7) is connected to the test bench (6) in a sliding way, the sliding direction of the sliding table (7) is parallel to the direction of the first butt joint (61), a second butt joint (71) for butt joint with the valve body (1) is arranged on the sliding table (7), the space directions of the first butt joint (61) and the second butt joint (71) are mutually perpendicular, a first pressing mechanism (62) for pressing the valve body (1) and the first butt joint (61) is arranged on the test bench (6), a second pressing mechanism (72) for pressing the valve body (1) and the second butt joint (71) is arranged on the sliding table (7), the second clamping block (723) is rotationally connected to a telescopic rod of the second hydraulic cylinder (721), a driven bevel gear (7231) coaxially arranged with the telescopic rod of the second hydraulic cylinder (721) is fixedly connected to the telescopic rod of the second hydraulic cylinder (723), a driving bevel gear (7231) coaxially arranged on the telescopic rod of the second hydraulic cylinder (721) is rotationally connected to the driven bevel gear (7211) fixedly meshed with the driving bevel gear (7211), a torsion spring (7213) for resetting the second clamping block (723) is connected between the adjusting gear (7212) and the telescopic rod of the second hydraulic oil cylinder (721), when the torsion spring (7213) is in a natural state, the clamping end of the second clamping block (723) is positioned at one side of the telescopic rod of the second hydraulic oil cylinder (721) which is away from the second butt joint (71), when the telescopic rod of the second hydraulic oil cylinder (721) contracts, the adjusting gear (7212) moves towards a direction close to the adjusting rack (731) and is meshed with the first adjusting rack (731), the adjusting rack (731) drives the adjusting gear (7212) to rotate, when the second clamping block (723) is abutted with the flange of the valve body (1), the clamping end of the second clamping block (723) is positioned at one side of the telescopic rod of the second hydraulic oil cylinder (721) which is close to the second butt joint (71), when the telescopic rod of the second hydraulic oil cylinder (721) is in a sliding connection with one end of the second butt joint (71) is used for enabling the second butt joint (71) to be aligned with the flange (1), the adjusting gear (7212) is in a direction close to the flange (7215) of the second butt joint (721), and when the adjusting gear (7212) is in a sliding connection with the flange (7215) of the second butt joint (721) which is in a sliding connection with the coaxial joint (14) of the second clamping block (723) which is in a sliding connection with the flange (14) of the valve body (721), the abutting block (7214) is simultaneously abutted with the flange of the second butt joint (71) and the valve body (1), the valve body (1) is further provided with the valve cavity (11), the valve body (1) is internally provided with the first water through hole (12), the second water through hole (13) and the overhaul port (14) which are communicated with the valve cavity (11), the overhaul port (14) is provided with the valve cover (2) for closing the overhaul port (14), the valve cover (2) is connected with the valve rod (3) which extends into the valve cavity (11) in a threaded manner, the valve cavity (11) is internally provided with the sliding cylinder (4), two ends of the sliding cylinder (4) are respectively communicated with the first water through hole (12) and the overhaul port (14), the side wall of the sliding cylinder (4) is provided with the communication port (41) for fluid to flow from the first water through hole (12) to the second water through hole (13), the sliding cylinder (4) is connected with the valve clack (5), the inner part of the sliding cylinder (4) is provided with the sliding rod cavity (42) and the rodless cavity (43), the inner wall of the sliding cylinder (4) is provided with the sealing ring (44) for preventing the sliding cylinder (4) from entering the valve body (15), be equipped with in joint groove (15) and be used for preventing that valve clack (5) from deviating from spacing ring (151) in slide cylinder (4), when valve clack (5) and spacing ring (151) butt, valve clack (5) are sealed intercommunication mouth (41), and valve clack (5) have the trend that is close to spacing ring (151) direction slip under the effect of self gravity.

2. The corner stop check valve testing apparatus of claim 1, wherein: the first hold-down mechanism (62) comprises a plurality of first hydraulic cylinders (621), the first hydraulic cylinders (621) are arranged around the first butt joint (61) and are connected to the test bench (6) in a sliding mode along the radial direction of the first butt joint (61), first movable cylinders (622) used for driving the first hydraulic cylinders (621) to slide are arranged on the test bench (6), and first clamping blocks (623) used for clamping flange parts of the valve body (1) are arranged on telescopic rods of the first hydraulic cylinders (621).

3. The corner stop check valve testing apparatus of claim 1, wherein: the second compressing mechanism (72) comprises a plurality of second hydraulic cylinders (721), the second hydraulic cylinders (721) are arranged around the second butt joint (71) and are connected to the sliding table (7) in a sliding way along the radial direction of the second butt joint (71), second movable cylinders (722) for driving the second hydraulic cylinders (721) to slide are arranged on the sliding table (7), and second clamping blocks (723) for clamping the flange parts of the valve bodies (1) are arranged on telescopic rods of the second hydraulic cylinders (721).

4. An angular shut-off check valve test apparatus according to claim 3, wherein: the sliding table (7) is rotationally connected with an adjusting table (73), the rotation axis of the adjusting table (73) is parallel to the direction of the second butt joint (71), and the second butt joint (71) and the second pressing mechanism (72) are both arranged on the adjusting table (73).

5. The corner stop check valve testing apparatus of claim 1, wherein: and a sealing gasket (152) for improving sealing performance is arranged in the clamping groove (15), and two sides of the sealing gasket (152) are respectively abutted with the bottom wall of the clamping groove (15) and the end part of the sliding cylinder (4).