A valve pressure testing device

Abstract

The application discloses a valve pressure testing device and relates to the technical field of valve detection. The valve pressure testing device comprises a frame and a pipeline. The pipeline is arranged above the inside of the frame. A first flat plate and a second flat plate are arranged on one side of the pipeline. A limiting table is movably connected to the middle part of the first flat plate. The first flat plate and the limiting table are slidably connected. A driving assembly is arranged on one side of the first flat plate. A limiting assembly is arranged at one end of the driving assembly. A limiting column is arranged in the middle part of the limiting assembly. A separating assembly is arranged in the inside of the second flat plate. A circular through hole is formed in the middle part of the first flat plate. A movable table is arranged in the separating assembly of the second flat plate. The valve is clamped and sealed by the driving assembly and the limiting assembly. The separating assembly is used to disassemble the valve, so that the valve cannot be clamped and tightly connected to the device and cannot be disassembled. In addition, the pressure relief assembly can actively adjust the pressure relief strength, and the pressure relief assembly protects the device body and the valve during use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve detection, in particular to a valve pressure testing device. BACKGROUND

[0002] Valves are control components in fluid conveying systems, with functions such as shut-off, regulation, flow guidance, anti-backflow, pressure stabilization, shunt or overflow pressure relief, etc. Valves for fluid control systems range from the simplest shut-off valve to the most complex self-control system, with a wide variety of types and specifications. Valves can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media, etc. As an important component in fluid conveying systems, most valves need to be pressure tested before use. Pressure testing is performed on a pressure testing device to detect the strength of the valve during operation.

[0003] Before detection, the openings on both sides of the valve need to be closed, so that the valve needs to be manually controlled by the device during installation. The existing valve pressure testing equipment is mostly replaced with clamps to limit different diameter valves, and then a separate structure is used to close the valve, resulting in low applicability of the existing device. During pressure testing, the pressure value is detected in real time, and there is no pressure relief structure, resulting in poor self-protection performance of the existing device. SUMMARY

[0004] The purpose of the present application is to provide a valve pressure testing device to solve the problems raised in the background.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a valve pressure testing device, comprising a frame and a pipeline, the inside of the frame is provided with a pipeline, one side of the pipeline is provided with a first flat plate, the middle part of the first flat plate is movably connected with a limiting table, the pipeline penetrates through the limiting table, the first flat plate and the limiting table are slidably connected, one side of the first flat plate is provided with a driving assembly, the driving assembly is mainly used for providing power, one end of the driving assembly is provided with a limiting assembly, the limiting assembly is used for changing the placement state of the valve, the middle part of the limiting assembly is provided with a limiting column, the inside of the second flat plate is provided with a separation assembly, a circular through hole is formed in the middle part of the first flat plate, the separation assembly in the second flat plate is provided with a movable table, the separation assembly is used for separating the valve and the movable table, the inside of the movable table is provided with a pressure relief assembly, the pressure relief assembly is used for protecting the detected valve, the first flat plate and the second flat plate are connected through two limiting columns on the left and right, the inside of the limiting column is provided with a spring, the limiting column has telescopic property, and the limiting column has an upper limit of extension, when the distance between the first flat plate and the second flat plate is greater than the upper limit of the limiting column, the first flat plate drives the second flat plate to rise through the limiting column.

[0006] Further, the driving assembly comprises two side plates respectively installed on the left and right sides of the limiting column, each of the side plates is connected with the limiting assembly, the upper and lower ends of each side plate are provided with front and rear auxiliary rods, the auxiliary rods are of telescopic structure, the upper end of each side plate is movably connected with the first plate through the front and rear auxiliary rods, the lower end of each side plate is movably connected with the second plate through the front and rear auxiliary rods, the upper end of each side plate is provided with a driving rod, the upper end of the driving rod is movably connected with the frame, the lower end of the driving rod is movably connected with the side plate, the driving rod is in an inclined state before being stretched, the stretching of the driving rod drives the side plate to move away from the valve, during the movement of the side plate, the driving rod synchronously drives the first plate and the limiting table to vertically descend, since the side plate is connected with the first plate through the auxiliary rods, the side plate has telescopic property, and the limiting column is synchronously lengthened or shortened, wherein the main function of the auxiliary rod is to keep the side plate and the first plate perpendicular to each other, so that the auxiliary rod is synchronously lengthened during the movement of the side plates on the two sides of the first plate, and the connection state between the first plate and the side plate is kept.

[0007] Further, the limiting assembly comprises four connecting rods respectively installed on the front and rear sides of the left and right side plates, one end of each of the two connecting rods on the same side of the left and right side plates is movably connected with the two ends of the clamping plate, the two ends of the clamping plate are provided with movable plates, the movable plates are movably connected with the clamping plate, the limiting assembly is provided with two groups, the limiting assemblies are vertically distributed between the side plates, the limiting assembly is controlled by the driving rod, the driving rod drives the limiting assembly to synchronously move through the side plate, the side plate drives the clamping plate to move through the connecting rod, the clamping plates on the front and rear sides of the valve synchronously gather to the middle part, until the outer walls of the clamping plates contact the outer wall of the valve, the movement path of the clamping plate is blocked, and the connecting rod and the side plate are synchronously stopped, when the clamping plate contacts the valve, the clamping plate limits the valve, the valve is vertically contacted with the limiting table and the movable table, the longitudinal distance upper limit is arranged between the clamping plates, that is, the deflection angle between the connecting rod and the side plate has an upper limit, after the distance between the clamping plates reaches the upper limit, the power from the driving rod is entirely used for separating the first plates.

[0008] Further, the separating assembly comprises a sliding plate installed in the second plate, the second plate is provided with a cavity, the sliding plate is slidably connected with the second plate, the sliding plate is connected with the second plate through a spring, one end of the sliding plate is a slope, the end where the slope of the sliding plate is located is attached to the movable table, during the descent of the second plate relative to the movable table, the outer wall of the movable table applies pressure to the sliding plate, forcing the sliding plate to move to the deep part of the cavity of the second plate, the outer wall of one side of the sliding plate is always attached to the movable table under the action of the spring, so that the second plate separates the valve and the movable table during the ascent.

[0009] Further, the pressure relief assembly comprises a channel opened in the movable table, an outer wall of the channel is provided with a sliding sleeve, the sliding sleeve is in sliding connection with the channel, an outer side of a lower end of the channel is provided with a water outlet, a lower end of the sliding sleeve is provided with an annular plate, both sides of the channel are provided with feedback holes, the feedback holes are provided with adjusting springs inside, and the sliding sleeve is connected with the frame through the adjusting springs. The pressure relief assembly mainly functions to detect the pressure intensity inside the valve in real time. During installation of the valve, the driving rod continues to stretch, the pressure generated by the stretching of the driving rod is fully applied to the adjusting spring inside the movable table, the length of the adjusting spring before pressure test is compressed, and then the pressure required for the medium to push the sliding sleeve to descend during pressure test is increased, so that the device can increase the pressure intensity according to the specific stress intensity of the valve, until the pressure intensity is greater than the pressure test intensity, the pressure relief assembly can actively relieve pressure to protect the device main body and the valve, and the maximum pressure relief intensity of the pressure relief assembly is less than the bearing intensity of the device.

[0010] Further, the limiting table is provided with a central shaft at the upper end, the central shaft penetrates the first plate, and the central shaft is in sliding connection with the first plate. The upper end of the central shaft is provided with a limiting plate. The limiting table is in a circular table shape, and mainly functions to close the upper end opening of the valve. The limiting table is driven by the first plate to rise and fall, so as to open or close the upper end opening of the valve. The slope of the side surface of the limiting table is greater than that of the movable table. The limiting table and the movable table are both provided with rubber layers. The limiting table exerts pressure on the movable table through the valve, and the movable table is subjected to the pressure of the limiting table and the gravity of the valve. The force intensity of the movable table on the valve is greater than that of the limiting table on the valve, so that the valve is clamped on the movable table below during the rising of the limiting table driven by the first plate.

[0011] Further, the movable table is in a circular table shape, penetrates the second plate, and is in movable connection with the second plate. The limiting table and the movable table are both in a circular table shape. The outer surface diameters of the circular table shapes at different heights are different. The outer surface diameters of the limiting table and the movable table increase in equal difference from the valve. The movable table and the second plate can move relative to each other, wherein the second plate rises relative to the movable table, so as to cooperate with the separating assembly to disassemble the valve and the movable table. In addition, the second plate descends relative to the movable table during installation of the valve, so as to keep the separating assembly always below the valve.

[0012] Further, the movable platform is connected with the sliding plate, the movable platform is connected with the second flat plate through the sliding plate, the diameter of the upper outer surface of the movable platform is smaller than the diameter of the lower outer surface, the movable platform is self-adaptive according to the inner wall diameter of the valve, the driving rod is retracted to drive the second flat plate to rise, the spring inside the second flat plate is stretched synchronously during the rising of the second flat plate, the outer wall of one side of the sliding plate is always attached to the movable platform, the upper end of the sliding plate is in contact with the valve to drive the valve to rise synchronously, the separating assembly is used for disassembling the valve, and the valve is prevented from being clamped with the movable platform under the action of pressure and being difficult to disassemble.

[0013] Compared with the prior art, the beneficial effects achieved by the present application are:

[0014] 1. The valve pressure testing device is provided with the driving assembly and the limiting assembly, the driving assembly controls the limiting platform and the movable platform to limit the valve upward and downward and close the openings at the upper and lower ends of the valve, the driving assembly controls the limiting assembly to limit the valve, the valve is vertically contacted with the limiting platform and the movable platform, the driving rod is elongated, the valve is limited and closed through cooperation with other parts, the valve is kept vertical, the contact surface between the valve and the limiting platform and the movable platform is circular, the valve is prevented from being inclined to cause a gap between the valve and the limiting platform and the movable platform, the device is self-adaptive to the inner diameter of the valve, the closing degree of the device to the valve is improved, the upper and lower ends of the valve are completely closed, the valve is actively positioned and adjusted during installation, and manual correction is not needed during processing, and the applicability and safety of the device are improved.

[0015] 2. The valve pressure testing device is provided with the separating assembly, the separating assembly is self-adaptive to the inner diameter of the valve and is lowered, the outer wall of one side of the sliding plate is always attached to the movable platform under the action of the spring, the second flat plate is separated from the valve and the movable platform during the rising of the second flat plate, the separating assembly is self-adaptive to the valve during installation, the valve is automatically unloaded after detection, the driving force of the separating assembly is the driving rod, the self-adaptive degree of the internal structure of the device to the valve is improved, the valve installation and disassembly are fully automated, manual intervention is not needed during work, the safety of the device is improved, the time required for installing the valve by the pressure testing equipment is reduced, and the working efficiency of the device is improved.

[0016] 3. The valve pressure testing device is provided with the pressure relief assembly, the length of the compression adjusting spring is adjusted before the valve is pressure tested, and then the trigger strength of the adjusting spring is changed, the device can set the medium pressure strength during pressure relief according to the required detection pressure strength, the pressure relief strength is adjustable, or the pressure relief strength is selected according to the stress strength of the valve, and when the pressure strength is greater than the pressure testing strength, the pressure relief assembly can actively relieve pressure, the safety during pressure testing is improved, the pressure relief protection device body and the valve are used for reducing the loss caused by pressure testing, and the production cost and maintenance cost are reduced. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 This is a front view full sectional structural diagram of the present invention;

[0020] Figure 3 This is the invention Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the bottom side view of the limiting platform structure of the present invention;

[0022] Figure 5 This is a top view of the movable platform structure of the present invention;

[0023] Figure 6 This is a top-view full sectional view of the movable platform of the present invention;

[0024] Figure 7 This is a front view full sectional structural diagram of the movable platform of the present invention;

[0025] Figure 8 This is a schematic diagram of the main structure of the sliding sleeve of the present invention.

[0026] In the diagram: 1. First plate; 2. Limiting platform; 201. Central shaft; 202. Limiting plate; 3. Drive assembly; 301. Side plate; 302. Auxiliary rod; 303. Drive rod; 4. Limiting assembly; 401. Connecting rod; 402. Clamping plate; 403. Movable plate; 5. Limiting post; 6. Separation assembly; 601. Slide plate; 7. Movable platform; 8. Pressure relief assembly; 801. Channel; 802. Sliding sleeve; 803. Water outlet; 804. Annular plate; 805. Feedback hole; 806. Adjusting spring; 9. Second plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-8The application provides a technical scheme: a valve pressure testing device, which comprises a frame and a pipeline, the pipeline is arranged above the inside of the frame, a first plate 1 is arranged on one side of the pipeline, a limiting table 2 is movably connected to the middle part of the first plate 1, the pipeline penetrates through the limiting table 2, the first plate 1 and the limiting table 2 are slidably connected, a driving assembly 3 is arranged on one side of the first plate 1, the driving assembly 3 is mainly used for providing power, a limiting assembly 4 is arranged at one end of the driving assembly 3, the limiting assembly 4 is used for changing the placing state of the valve, a limiting column 5 is arranged in the middle part of the limiting assembly 4, a separation assembly 6 is arranged in the inside of a second plate 9, a circular through hole is formed in the middle part of the first plate 1, a movable table 7 is arranged on the second plate 9, the separation assembly 6 is used for separating the valve and the movable table 7, a pressure relief assembly 8 is arranged in the inside of the movable table 7, and the pressure relief assembly 8 is used for protecting the detected valve.

[0029] The driving assembly 3 comprises a side plate 301 arranged on one side of the limiting column 5, the side plate 301 is connected with the limiting assembly 4, auxiliary rods 302 are arranged at the two ends of the side plate 301, the auxiliary rods 302 are of telescopic structure, the side plate 301 is movably connected with the first plate 1 through the auxiliary rods 302, a driving rod 303 is arranged at the upper end of the side plate 301, the upper end of the driving rod 303 is movably connected with the frame, and the lower end of the driving rod 303 is movably connected with the side plate 301.

[0030] The limiting assembly 4 comprises a connecting rod 401 arranged on one side of the side plate 301, one end of the connecting rod 401 is movably connected with a clamping plate 402, movable plates 403 are arranged at the two ends of the clamping plate 402, the movable plates 403 are movably connected with the clamping plate 402, the limiting assembly 4 is provided with two groups, the limiting assemblies 4 are vertically distributed between the side plates 301, the driving assembly 3 controls the limiting table 2 and the movable table 7 to limit the valve upward and downward and to close the openings at the two ends of the valve, the driving assembly 3 controls the limiting assembly 4 to limit the valve, realizes that the valve vertically contacts the limiting table 2 and the movable table 7, realizes that the driving rod 303 is in elongation, limits and closes the valve by cooperating with other parts, keeps the valve vertical, makes the contact surface between the valve and the limiting table 2 and the movable table 7 circular, avoids that the valve is inclined and causes a gap between the valve and the limiting table 2 and the movable table 7, the device can be self-adapted according to the inner diameter of the valve, improves the closing degree of the device to the valve, guarantees that the two ends of the valve are completely closed, the valve is actively positioned and adjusted during installation, and artificial correction is not needed during processing, and the applicability and safety of the device are improved.

[0031] The separation assembly 6 comprises a sliding plate 601 mounted in the second flat plate 9, the inside of the second flat plate 9 is provided with a cavity, the sliding plate 601 is in sliding connection with the second flat plate 9, the sliding plate 601 is connected with the second flat plate 9 through a spring, one end of the sliding plate 601 is a slope, the end of the sliding plate 601 where the slope is located is attached to the movable table 7, the separation assembly 6 can adaptively descend according to the inner diameter of the valve, the outer wall of one side of the sliding plate 601 is always attached to the movable table 7 under the action of the spring, so that the second flat plate 9 separates the valve and the movable table 7 during the rising process, the separation assembly 6 adaptively descends during the installation of the valve, the separation assembly 6 automatically unloads after the detection is completed, the power source of the separation assembly 6 is the driving rod 303, the self-adaptation degree of the internal structure of the device to the valve is improved, the valve installation and removal are fully automated, human intervention is not required during work, the safety degree of the device is improved, the time required for installing the valve by the pressure testing equipment is reduced, and the working efficiency of the device is improved.

[0032] The pressure relief assembly 8 comprises a channel 801 opened in the movable table 7, the outer wall of the channel 801 is provided with a sliding sleeve 802, the sliding sleeve 802 is in sliding connection with the channel 801, a water outlet 803 is opened on the outer side of the lower end of the channel 801, the lower end of the sliding sleeve 802 is provided with an annular plate 804, feedback holes 805 are opened on both sides of the channel 801, the inside of the feedback holes 805 is provided with an adjusting spring 806, the sliding sleeve 802 is connected with the frame through the adjusting spring 806, before the valve is pressure tested, the length of the adjusting spring 806 is compressed, so that the triggering strength of the adjusting spring 806 is changed, the device can set the medium pressure strength during pressure relief according to the required detection pressure strength, the pressure relief strength is adjustable, or the pressure relief strength is selected according to the stress strength of the valve, wherein after the stress strength is greater than the pressure testing strength, the pressure relief assembly 8 can actively relieve pressure, improve the safety during pressure testing, protect the pressure relief device body and the valve, reduce the loss caused by pressure testing, and reduce the production cost and maintenance cost.

[0033] The center shaft 201 is arranged on the upper end of the limiting table 2, penetrates the first flat plate 1, and is in sliding connection with the first flat plate 1; the upper end of the center shaft 201 is provided with a limiting plate 202.

[0034] The movable table 7 is in the shape of a circular table, penetrates the second flat plate 9, and is in movable connection with the second flat plate 9.

[0035] The movable table 7 is connected with the sliding plate 601, and the movable table 7 is connected with the second flat plate 9 through the sliding plate 601; the diameter of the outer surface of the upper part of the movable table 7 is smaller than the diameter of the outer surface of the lower part.

[0036] The working principle of the present application: the pipeline at the upper end of the device is connected with a pressure source, the pressure source transports the medium to the inside of the valve through the pipeline, thereby realizing the pressure detection of the device on the valve, the central processing unit (not shown in the figure) is arranged inside the device, and the central processing unit controls the power parts inside the device to work;

[0037] Before use, the valve to be detected is placed above the second flat plate 9, the lower end of the valve is connected with the second flat plate 9 or the separate component 6, then the central processing unit can control the drive rod 303 above the frame to stretch, the drive rod 303 is in an inclined state before stretching, the drive rod 303 stretches to drive the side plate 301 to move away from the valve, during the movement of the side plate 301, the drive rod 303 synchronously drives the first flat plate 1 and the limiting table 2 to vertically descend, because the side plate 301 is connected with the first flat plate 1 through the auxiliary rod 302, the main role of the auxiliary rod 302 is to keep the side plate 301 and the first flat plate 1 perpendicular to each other, so that during the movement of the side plate 301 on both sides of the first flat plate 1, the auxiliary rod 302 is synchronously elongated to keep the connection between the first flat plate 1 and the side plate 301;

[0038] During the movement of the side plate 301, the side plate 301 drives the limiting component 4 to synchronously move, the side plate 301 drives the clamping plate 402 to move through the connecting rod 401, the clamping plates 402 on the front and back sides of the valve synchronously gather to the middle, until the outer wall of the clamping plate 402 contacts with the outer wall of the valve, the movement path of the clamping plate 402 is blocked, and the connecting rod 401 and the side plate 301 are synchronously stopped;

[0039] The two sides of the clamping plate 402 are provided with movable plates 403, the clamping plate 402 is in an arc structure, and the contact between the clamping plate 402 and the valve has three cases: first, when the outer diameter of the valve is smaller than the inner diameter of the clamping plate 402, the clamping plate 402 limits the valve through the middle of the inner wall; second, when the outer diameter of the valve is equal to the inner diameter of the clamping plate 402, the clamping plate 402 is fitted with the outer wall of the valve through the inner wall surface, and the clamping plate 402 limits the valve through the inner wall; third, when the outer diameter of the valve is greater than the inner diameter of the clamping plate 402, the clamping plate 402 limits the valve through the inner walls at both ends;

[0040] The clamping plate 402 is connected with the movable plate 403 through a spring shaft, the movable plate 403 is in an unfolded state in an idle state, and the opening angle of the clamping plate 402 is increased, wherein the clamping plate 402 can contact with the valve through the movable plate 403, and the contact area between the limiting component 4 and the valve is increased;

[0041] With the combined action of the upper and lower auxiliary rods 302 and the side plate 301, the four clamping plates 402 on the outside of the valve jointly limit the valve, making the valve's central axis perpendicular to the first plate 1, while the upper and lower surfaces of the valve are parallel to the first plate 1. At this time, the drive rod 303 continues to extend, and the first plate 1 drives the valve and the second plate 9 to descend vertically through the limiting component 4. Under the action of the movable table 7, the slide plate 601 inside the second plate 9 moves into the depth of the cavity inside the second plate 9. Under the action of the spring, one side of the outer wall of the slide plate 601... Always in contact with the movable platform 7, after the upper and lower ends of the valve contact the limiting platform 2 and the movable platform 7 respectively, the limiting platform 2 begins to rise relative to the first plate 1 until the upper surface of the limiting platform 2 contacts the lower surface of the first plate 1. At this time, the limiting platform 2 and the movable platform 7 completely block the openings at both ends of the valve, thus achieving valve sealing. The limiting platform 2 and the movable platform 7 are both frustum-shaped structures. The outer wall diameter of the limiting platform 2 and the movable platform 7 on the side closer to the valve is smaller than the outer wall diameter on the side farther away. The limiting platform 2 and the movable platform 7 adapt to the inner wall diameter of the valve.

[0042] After the valve seal is completed, the drive rod 303 continues to extend. At this time, the pressure generated by the extension of the drive rod 303 is all applied to the adjusting spring 806 inside the movable table 7. One end of the adjusting spring 806 is equipped with a pressure detection element. The pressure detection element detects the detection value of the adjusting spring 806 in real time. At the same time, the pressure detection element feeds back the detection value to the central processing unit in real time. When the drive rod 303 extends to the pressure value required by the tester, the drive rod 303 stops extending.

[0043] The central processing unit controls the medium to enter the valve through a pipeline. After the valve is filled with the medium, the medium is continuously pressurized to monitor the valve. During the monitoring period, the sliding sleeve 802 inside the movable table 7 is simultaneously subjected to pressure.

[0044] Due to the pressure of the medium, the medium comes into contact with the sliding sleeve 802 through the feedback hole 805. Under the action of pressure, the sliding sleeve 802 drives the adjusting spring 806 to contract. The upper end of the sliding sleeve 802 follows the adjusting spring 806 and descends synchronously until the annular plate 804 below the sliding sleeve 802 can no longer completely cover the outlet 803. At this time, the medium inside the valve leaves through the channel 801 and the outlet 803, the pressure inside the valve drops synchronously, and the adjusting spring 806 drives the sliding sleeve 802 to rise. The detection of the valve by this device ends.

[0045] The retraction of the drive rod 303 causes the first plate 1 to rise. During the rise of the second plate 9, the spring inside the second plate 9 extends synchronously, keeping the outer wall of one side of the slide plate 601 in contact with the movable platform 7. The upper end of the slide plate 601 contacts the valve, causing the valve to rise synchronously.

[0046] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0047] Finally, it should be noted that the above-mentioned only constitutes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will still be able to modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve pressure testing apparatus comprising a frame and a conduit, characterised in that: The inside of the frame is provided with a pipeline, one side of the pipeline is provided with a first flat plate (1) and a second flat plate (9), the middle part of the first flat plate (1) is movably connected with a limiting table (2), the pipeline penetrates through the limiting table (2), the first flat plate (1) and the limiting table (2) are slidably connected, one side of the first flat plate (1) is provided with a driving assembly (3), the driving assembly (3) is mainly used for providing power, one end of the driving assembly (3) is provided with a limiting assembly (4), the limiting assembly (4) is used for changing the valve placing state, the middle part of the limiting assembly (4) is provided with a limiting column (5), the inside of the second flat plate (9) is provided with a separation assembly (6), the middle part of the first flat plate (1) is provided with a circular through hole, the separation assembly (6) of the second flat plate (9) is provided with a movable table (7), the separation assembly (6) is used for separating the valve and the movable table (7), the inside of the movable table (7) is provided with a pressure relief assembly (8), the pressure relief assembly (8) is used for protecting the detected valve, the first flat plate (1) and the second flat plate (9) are connected through the left and right limiting columns (5), the inside of the limiting column (5) is provided with a spring, the limiting column (5) has telescopic properties, the limiting column (5) has an upper limit of extension, when the distance between the first flat plate (1) and the second flat plate (9) is greater than the upper limit of the limiting column (5), the first flat plate (1) drives the second flat plate (9) to rise through the limiting column (5); The driving assembly (3) comprises left and right two edge plates (301) mounted on one side of the left and right limiting columns (5) respectively, each edge plate (301) is connected with the limiting assembly (4), the upper and lower ends of the edge plate (301) are provided with front and rear two auxiliary rods (302) respectively, the auxiliary rod (302) is a telescopic structure, the upper end of each edge plate (301) is movably connected with the first flat plate (1) through the front and rear two auxiliary rods (302), the lower end of each edge plate (301) is movably connected with the second flat plate (9) through the front and rear two auxiliary rods (302), the upper end of each edge plate (301) is provided with a driving rod (303), the upper side of the driving rod (303) is movably connected with the frame, the lower end of the driving rod (303) is movably connected with the edge plate (301). The driving rod (303) is in an inclined state before stretching, the driving rod (303) stretches to drive the side plate to move away from one side of the valve, during the movement of the side plate (301), the driving rod (303) synchronously drives the first flat plate (1) and the limiting table (2) to vertically descend, the side plate (301) has a telescopic property, and is synchronously elongated or shortened in cooperation with the limiting column (5), the main role of the auxiliary rod (302) is to keep the side plate (301) perpendicular to the first flat plate (1) and the second flat plate (9), so that the auxiliary rod (302) is synchronously elongated during the movement of the side plate (301) on both sides of the first flat plate (1) and the second flat plate (9), and the connection state among the first flat plate (1), the second flat plate (9) and the side plate (301) is kept; The limiting assembly (4) comprises four connecting rods (401) installed on the front and back sides of the left and right side plates (301) respectively, one end of the two connecting rods (401) on the same side of the left and right side plates (301) is movably connected with the two ends of a clamping plate (402) respectively, the two ends of the clamping plate (402) are provided with movable plates (403), the movable plates (403) are movably connected with the clamping plate (402), the limiting assembly (4) is provided with two groups, and the limiting assemblies (4) are vertically distributed between the side plates (301). The limiting assembly (4) is controlled by the driving rod (303), the driving rod (303) drives the limiting assembly (4) to synchronously move through the side plate (301), the side plate (301) drives the clamping plate (402) to move through the connecting rod (401), the clamping plates (402) on the front and back sides of the valve are synchronously gathered to the middle, until the outer walls of the clamping plates (402) contact the outer wall of the valve, the movement path of the clamping plate (402) is blocked, the connecting rod (401) and the side plate (301) are synchronously stopped, when the clamping plate (402) contacts the valve, the clamping plate (402) limits the valve, the valve is vertically contacted with the limiting table and the movable table, the longitudinal distance between the clamping plates (402) has an upper limit, the deflection angle between the connecting rod (401) and the side plate (301) has an upper limit, and when the distance between the clamping plates (402) reaches the upper limit, the power from the driving rod (303) is used for separating the first flat plate (1) and the second flat plate (9).

2. A valve pressure testing device as claimed in claim 1, wherein: The separating assembly (6) comprises a sliding plate (601) installed in the second flat plate (9), the second flat plate (9) is provided with a cavity, the sliding plate (601) is arranged in the cavity, the sliding plate (601) is slidably connected with the second flat plate (9), and the sliding plate (601) is connected with the second flat plate (9) through a spring.

3. A valve pressure testing device as claimed in claim 2, wherein: The pressure relief assembly (8) comprises a channel (801) opened in the movable table (7), an outer wall of the channel (801) is provided with a sliding sleeve (802), the sliding sleeve (802) is in sliding connection with the channel (801), an outer side of a lower end of the channel (801) is provided with a water outlet (803), a lower end of the sliding sleeve (802) is provided with an annular plate (804), both sides of the channel (801) are provided with feedback holes (805), the feedback holes (805) are internally provided with adjusting springs (806), and the sliding sleeve (802) is connected with the frame through the adjusting springs (806).

4. The valve pressure testing device of claim 1, wherein: The limiting table (2) is provided with a central shaft (201) at the upper end, the central shaft (201) penetrates the first flat plate (1), and the central shaft (201) is in sliding connection with the first flat plate (1); and the upper end of the central shaft (201) is provided with a limiting plate (202).

5. The valve pressure testing device of claim 2, wherein: The movable table (7) is in circular table structure, the movable table (7) penetrates the second flat plate (9), and the movable table (7) is movably connected with the second flat plate (9).

6. The valve pressure testing device of claim 2, wherein: The movable table (7) is connected with the sliding plate (601), the movable table (7) is connected with the second flat plate (9) through the sliding plate (601), and the upper outer surface diameter of the movable table (7) is smaller than the lower outer surface diameter.

Images