Automatic judgment device and verification method for safety valve

Abstract

The invention provides an automatic judgment device for a safety valve and a verification method, and relates to the technical field of safety valve verification. The automatic judgment device comprises clamping seats which are provided with an air inlet valve and a pressure release valve, are arranged at intervals along a first horizontal direction and are used for fixing a safety valve to be tested, the translation assembly comprises a connecting piece, and the end part of the connecting piece is provided with a sealing plate matched with the safety valve to be tested for sealing; the reversing valve is arranged to be communicated with an outlet of the safety valve to be tested and alternatively communicated with the flow sensor or the bubble meter, and the adjusting piece of the adjusting assembly is arranged to drive the sealing plate to adjust the preset angle until the sealing plate is sealed with the safety valve to be tested, and the limiting piece is controlled to move to abut against the sealing plate. The first driving mechanism is arranged to drive the sealing plate to move to selectively seal the safety valve to be tested so as to verify the setting pressure or the sealing performance of the safety valve to be tested. According to the automatic judgment device, the angle of the sealing plate can be adjusted, so that the sealing performance is improved, and the stability of the sealing plate is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of safety valve calibration, and in particular to an automatic determination device and a calibration method for a safety valve. Background Art

[0002] As a special equipment accessory, the safety valve plays a role of safety protection in the system. When the system pressure exceeds the specified value, the safety valve opens and discharges part of the gas or fluid in the system into the atmosphere or outside the pipeline, so that the system pressure is always less than the allowable value. The allowable value is the set pressure, thereby ensuring that the system does not cause accidents due to excessive pressure. Therefore, the accuracy of the safety valve set pressure determines the overall safety of the system. According to relevant regulations, the safety valve needs to be calibrated three times for the set pressure and sealing pressure, and the three set pressure deviations and leakage must meet the standard requirements.

[0003] In the prior art, when the set pressure of a safety valve is calibrated, the inlet pressure of the safety valve is usually determined as the set pressure of the safety valve when the test medium is seen or heard to be continuously discharged. That is, when the safety valve inspector calibrates the set pressure of the safety valve, he controls the air inlet valve and observes the pointer of the mechanical pressure gauge. When the test medium is seen or heard to be continuously discharged, the pointer of the pressure gauge will fall back and swing momentarily, which is used as the set pressure value of the safety valve. However, this method usually produces instantaneous pressure changes due to the opening of the safety valve, and it is difficult for the inspector to accurately read the pressure gauge value. That is, the inspector cannot make an accurate qualitative judgment on the continuous discharge of the test medium. If the judgment is too early, the discharge may be caused by the forward leakage of the safety valve and the safety valve is not opened. If the judgment is too late, the safety valve has been opened, and the opening point of the safety valve cannot be accurately captured. Summary of the invention

[0004] An object of the first aspect of the present invention is to provide an automatic determination device for a safety valve, so as to solve the technical problem in the prior art that the sealing performance of the automatic determination device is reduced due to excessive instantaneous flow of the safety valve to be tested after the sealing is adjusted.

[0005] Another object of the first aspect of the present invention is to improve the translational stability of the translation assembly.

[0006] The second aspect of the present invention aims to provide a verification method using the above-mentioned automatic determination device.

[0007] According to the purpose of the first aspect of the present invention, the present invention provides an automatic determination device for a safety valve, comprising:

[0008] The industrial control chassis comprises an air intake valve and a pressure relief valve, wherein the air intake valve and the pressure relief valve are respectively connected to a pipeline and control the on-off of the pipeline, and the industrial control chassis further comprises a plurality of pressure sensors, all of which are connected in parallel to one end of the pipeline close to the air intake valve;

[0009] At least one clamping seat, located on the base, all of the clamping seats are arranged at intervals along a first horizontal direction, and the clamping seat is used to fix and install the safety valve to be tested;

[0010] a translation assembly, located at one side of the clamping seat along the first horizontal direction, the translation assembly being configured to move along the first horizontal direction, the translation assembly comprising a connecting member extending along a second horizontal direction, an end of the connecting member being provided with a sealing plate that cooperates with the safety valve to be tested for sealing, the first horizontal direction being perpendicular to the second horizontal direction;

[0011] A reversing valve is located on a side of the connecting member away from the sealing plate, one end of the reversing valve is arranged to be connected to the outlet of the safety valve to be tested, and the other end is arranged to be connected to a flow sensor or a bubble meter alternatively;

[0012] An adjusting component is located between the sealing plate and the connecting member, the adjusting component comprises an adjusting member and at least three limiting members, the adjusting member is configured to drive the sealing plate to adjust a preset angle until the sealing plate is sealed with the safety valve to be tested, and all the limiting members are controlled to move to abut against the sealing plate;

[0013] The driving assembly comprises a first driving mechanism, wherein the first driving mechanism is configured to drive the translation assembly to move along the first horizontal direction, so as to drive the sealing plate to move along the first horizontal direction to selectively seal one of the safety valves to be tested located on the clamping seat, so that when the reversing valve is connected to the flow sensor, the set pressure of the safety valve to be tested is verified, and when the reversing valve is connected to the bubble meter, the sealing performance of the safety valve to be tested is verified.

[0014] Optionally, the adjusting member is a universal joint, the limiting member includes a ball head handle and a second driving mechanism for driving the ball head handle to move, and the ball head end of the ball head handle abuts against the sealing plate.

[0015] Optionally, the sealing plate includes a plurality of concentrically arranged sealing rings, and each of the sealing rings cooperates with the safety valve to be tested of a different specification.

[0016] Optionally, the translation component further includes:

[0017] A first moving member, moving along the first horizontal direction;

[0018] The second moving member moves in the vertical direction. The second moving member is fixedly connected to the other end of the connecting member, and the second moving member is configured to move relative to the first moving member.

[0019] Optionally, the translation component further includes:

[0020] a horizontal guide rail, located on the back of the first moving member, the horizontal guide rail being arranged to extend along the first horizontal direction;

[0021] A vertical guide rail is located in front of the first moving member, and the vertical guide rail is configured to extend along the vertical direction so that the second moving member moves along the extension direction of the vertical guide rail.

[0022] Optionally, the sealing plate is provided with a first through hole, and the automatic determination device further comprises:

[0023] A connecting pipe is located between the sealing plate and the reversing valve, and two ends of the connecting pipe are respectively connected to the first through hole and the reversing valve.

[0024] Optionally, the connecting member is provided with a second through hole, and the second through hole is arranged opposite to the first through hole;

[0025] The connecting pipe is arranged to penetrate through the second through hole and communicate with the reversing valve.

[0026] Optionally, the clamping seat includes at least two positioning holes, each of which extends from the center of the clamping seat toward the edge, and the clamping seat further includes:

[0027] At least two positioning members are arranged corresponding to the positioning holes, and the positioning members are configured to move along the positioning holes from the edge of the clamping seat toward the center until the positioning surfaces of all the positioning members abut against the safety valve to be tested.

[0028] According to the purpose of the second aspect of the present invention, the present invention also provides a verification method using any of the automatic determination devices described above, comprising the following steps:

[0029] Control the translation assembly to translate to the sealing plate to block the outlet of the safety valve to be tested;

[0030] Control the reversing valve to be connected with the flow sensor, and control the vent valve to open and the pressure relief valve to disconnect;

[0031] Monitoring and collecting the flow value of the flow sensor and the pressure value of the pressure sensor;

[0032] When the pressure value of the pressure sensor reaches the preset pressure of the safety valve to be tested, controlling the pressure increase rate to be a preset rate;

[0033] When the flow value increases to a preset flow rate, a corresponding pressure value is collected and used as a set pressure of the safety valve to be tested.

[0034] Optionally, the verification method further includes a sealing performance test of the safety valve to be tested, and the testing steps include:

[0035] The control reversing valve is connected with the bubble meter;

[0036] Controlling the pressure relief valve to disconnect and the air intake valve to open;

[0037] When the pressure value of the pressure sensor is monitored to be a preset pressure, collecting the number of bubbles in the bubble meter;

[0038] Determine whether the number of bubbles is less than a standard value;

[0039] If yes, it is determined that the sealing performance of the safety valve to be tested is qualified.

[0040] The present invention controls the translation assembly to translate to the sealing plate to seal the outlet of the safety valve to be tested, and sets the reversing valve to be selectively connected to the flow sensor or the bubble meter, thereby realizing multifunctional verification of the set pressure and sealing performance of the safety valve to be tested, and an adjustment assembly including an adjustment member and at least three limit members is arranged between the sealing plate and the translation assembly, and the adjustment member is used to drive the sealing plate to adjust to a preset angle of the sealing plate and the safety valve to be tested, so that the sealing plate and the outlet of the safety valve to be tested are more closely fitted, thereby improving the sealing performance of the sealing plate, and the limit member is controlled to move to abut against the sealing plate, so as to ensure that when the reversing valve is connected to the flow sensor for checking the set pressure of the safety valve to be tested, the limit member is controlled to abut against the sealing plate when the instantaneously increased flow flows out of the safety valve to be tested, so as to provide the sealing plate with a supporting force opposite to the gas flow direction, thereby preventing the sealing plate from being offset by the gas impact force, thereby further improving the sealing performance of the sealing plate.

[0041] Furthermore, the horizontal guide rail of the present invention is configured to extend along a first horizontal direction and be located on the back of the first movable member, and the vertical guide rail is arranged on the front of the first movable member, that is, the second movable member is connected to the surface of the first movable member through the vertical guide rail, so that the first movable member moves along the extension direction of the horizontal guide rail, and the second movable member moves relative to the first movable member along the extension direction of the vertical guide rail, that is, the horizontal guide rail provides horizontal guidance for the first movable member, and the vertical guide rail provides vertical guidance for the second movable member, thereby limiting the sealing plate in the horizontal and vertical directions, improving the guiding accuracy of the translation assembly, and further improving the translation stability of the translation assembly.

[0042] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0044] Figure 1 is a schematic overall structural diagram of an automatic determination device according to an embodiment of the present invention;

[0045] Figure 2 yes Figure 1 A schematic partial enlarged view of point A shown;

[0046] Figure 3 is a schematic front view of an automatic determination device according to an embodiment of the present invention;

[0047] Figure 4 yes Figure 3 A schematic partial enlarged view of point B shown;

[0048] Figure 5 is a schematic flow chart of a method for checking a set pressure of an automatic determination device according to another embodiment of the present invention;

[0049] Figure 6 It is a schematic flow chart of a sealing performance verification method of an automatic determination device according to another embodiment of the present invention.

[0050] Reference numerals:

[0051] 100-automatic determination device, 200-safety valve to be tested, 10-industrial control chassis, 11-intake valve, 12-pressure relief valve, 13-pressure sensor, 14-pipeline, 20-clamping seat, 21-positioning hole, 22-positioning member, 30-base, 40-translation assembly, 41-connecting member, 42-sealing plate, 421-sealing ring, 43-first moving member, 44-second moving member, 45-horizontal guide rail, 46-vertical guide rail, 50-reversing valve, 51-connecting pipe, 60-flow sensor, 70-bubble meter, 80-adjusting assembly, 81-adjusting member, 82-limiting member, 821-ball head handle, 822-second driving mechanism, 90-driving assembly, 91-first driving mechanism. DETAILED DESCRIPTION

[0052] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0053] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0054] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0055] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] Figure 1 is a schematic overall structural diagram of an automatic determination device according to an embodiment of the present invention, Figure 2 yes Figure 1 A schematic partial enlarged diagram of point A shown, Figure 3 is a schematic front view of an automatic determination device according to an embodiment of the present invention, Figure 4 yes Figure 3 A schematic partial enlarged view of point B is shown.

[0057] like Figure 1 As shown, the present invention provides an automatic determination device 100 for a safety valve, the automatic determination device 100 includes an industrial control chassis 10, at least one clamping seat 20, a translation assembly 40, a reversing valve 50, an adjustment assembly 80 and a drive assembly 90 (see Figure 3The industrial control chassis 10 includes an air intake valve 11 and a pressure relief valve 12, the air intake valve 11 and the pressure relief valve 12 are respectively connected to the pipeline 14 and control the on-off of the pipeline 14, the industrial control chassis 10 also includes a plurality of pressure sensors 13, all of the pressure sensors 13 are connected in parallel to one end of the pipeline 14 close to the air intake valve 11, all of the clamping seats 20 are located on the base 30, and all of the clamping seats 20 are arranged at intervals along the first horizontal direction, the clamping seats 20 are used to fix and install the safety valve 200 to be tested, the translation assembly 40 is located on one side of the clamping seat 20 along the first horizontal direction, the translation assembly 40 is arranged to move along the first horizontal direction, the translation assembly 40 includes a connecting member 41 extending along the second horizontal direction, the end of the connecting member 41 is provided with a sealing plate 42 that cooperates with the safety valve 200 to be tested and seals, the first horizontal direction is perpendicular to the second horizontal direction, the reversing valve 50 is located on the side of the connecting member 41 away from the sealing plate 42, and one end of the reversing valve 50 is arranged to be with the safety valve 200 to be tested The outlet of the safety valve 200 is connected, and the other end is configured to be selectively connected to the flow sensor 60 or the bubble meter 70. The adjustment component 80 is located between the sealing plate 42 and the connecting member 41. The adjustment component 80 includes an adjustment member 81 and at least three limit members 82. The adjustment member 81 is configured to drive the sealing plate 42 to adjust a preset angle until the sealing plate 42 is sealed with the safety valve 200 to be tested, and all the limit members 82 are controlled to move to abut against the sealing plate 42. The driving component 90 includes a first driving mechanism 90. The first driving mechanism 90 is configured to drive the translation component 40 to move along a first horizontal direction to drive the sealing plate 42 to move along the first horizontal direction to selectively seal a safety valve 200 to be tested located on the clamping seat 20, so that when the reversing valve 50 is connected to the flow sensor 60, the set pressure of the safety valve 200 to be tested is verified, and when the reversing valve 50 is connected to the bubble meter 70, the sealing performance of the safety valve 200 to be tested is verified. Here, the number of the limiting members 82 is three or more, and the ends of the plurality of limiting members 82 form positioning surfaces for positioning the sealing plate 42 .

[0058] like Figure 2As shown, in this embodiment, by controlling the translation assembly 40 to translate to the sealing plate 42 to seal the outlet of the safety valve 200 to be tested, and setting the reversing valve 50 to be connected to the flow sensor 60 or the bubble meter 70 at one place, a multifunctional calibration of the set pressure and sealing performance of the safety valve 200 to be tested is realized, and an adjustment assembly 80 including an adjustment member 81 and at least three limit members 82 is arranged between the sealing plate 42 and the translation assembly 40, and the adjustment member 81 is used to drive the sealing plate 42 to adjust to a preset angle at which the sealing plate 42 and the safety valve 200 to be tested are sealed, so that The sealing plate 42 is more closely fitted to the outlet of the safety valve 200 to be tested, thereby improving the sealing performance of the sealing plate 42, and the limit member 82 is controlled to move to abut against the sealing plate 42 to ensure that when the reversing valve 50 is connected to the flow sensor 60 for checking the set pressure of the safety valve 200 to be tested, the limit member 82 is controlled to abut against the sealing plate 42 when the instantaneously increased flow flows out of the safety valve 200 to be tested, so as to provide a supporting force to the sealing plate 42 in the opposite direction of the gas flow, thereby preventing the sealing plate 42 from being offset by the gas impact force, thereby further improving the sealing performance of the sealing plate 42.

[0059] In this embodiment, the reversing valve 50 is arranged on the side of the connecting member 41 away from the sealing plate 42, and the flow sensor 60 is arranged on the side of the reversing valve 50 away from the safety valve 200 to be tested, that is, the reversing valve 50 is arranged on the side of the connecting member 41 away from the adjusting member 81, which helps to reduce the potential impact of the failure or leakage of the sealing plate 42 on the reversing valve 50. The setting position of the reversing valve 50 allows the gas to smoothly enter the reversing valve 50 after flowing through the connecting member 41, thereby realizing the switching or adjustment of the flow direction, reducing the resistance and pressure loss of the gas in the system, and improving the gas transmission efficiency.

[0060] In this embodiment, when the reversing valve 50 is connected to the flow sensor 60, the set pressure of the safety valve 200 to be tested is verified, that is, when the reversing valve 50 is set to be connected to the flow sensor 60, it is used to cooperate with the pressure sensor 13 to measure the set pressure of the safety valve 200 to be tested. The flow sensor 60 is used to detect the instantaneous flow rate when the safety valve 200 to be tested reaches the set pressure in real time. The pressure sensor 13 is used to monitor the pressure of the pipeline 14 in real time. By controlling the air inlet valve 11 to open, the gas flows through the pipeline 14 and is transported to the safety valve 200 to be tested, so as to gradually The pressure at the safety valve 200 to be tested is increased until the pressure of the pipeline 14 reaches 90% of the set pressure, and the air intake valve 11 is controlled to reduce the gas pressure increase rate to any value in the range of 0.005MPa / s-0.01MPa / s until the set pressure of the safety valve 200 to be tested is reached. The safety valve 200 to be tested is opened so that the instantaneous flow detected by the flow sensor 60 increases abnormally. At this time, the pressure detected by the pressure sensor 13 is the set pressure of the safety valve 200 to be tested, thereby improving the accuracy of the determination that the safety valve 200 to be tested reaches the set pressure. Here, after the pressure of the pipeline 14 reaches 90% of the set pressure, it is less than before the set pressure. The pressure increase rate can be 0.005MPa / s, 0.007MPa / s, 0.009MPa / s or 0.01MPa / s, or any value in the range of 0.005MPa / s-0.01MPa / s. In a preferred embodiment, after the pressure of the pipeline 14 reaches 90% of the set pressure, the pressure increase rate may be 0.01 MPa / s.

[0061] In this embodiment, when the reversing valve 50 is connected to the bubble meter 70, the sealing performance of the safety valve 200 to be tested is verified, that is, when the reversing valve 50 is set to be connected to the bubble meter 70, the bubble meter 70 is used to regularly count the bubbles flowing into the bubble meter 70 through the reversing valve 50, and by controlling the opening and closing degree of the intake valve 11, the pressure in the control pipeline 14 is always at 90% of the set pressure, and the control gas flows through the safety valve 200 to be tested, the reversing valve 50 and the bubble meter 70 in turn, and the bubble meter 70 is controlled to collect the number of bubbles within a preset time. If the number of bubbles collected within the preset time is less than the preset value, it is determined that the safety valve 200 to be tested has good sealing performance.

[0062] In this embodiment, by controlling the reversing valve 50 to selectively connect with the flow sensor 60 or the bubble meter 70, the automatic determination device 100 can automatically determine the set pressure and sealing performance of the safety valve 200 to be tested, thereby realizing the versatility of the automatic determination device 100 and improving the verification efficiency. The parameters of the flow sensor 60 and the pressure sensor 13 are synchronously and real-timely collected through a multi-channel synchronous acquisition unit, thereby improving the accuracy of human judgment during the verification process. The automatic determination device 100 has a simple structure and is easy to operate.

[0063] like Figure 3As shown, in this embodiment, a plurality of clamping tables extending along a first horizontal direction and arranged at intervals are provided on the base 30 of the automatic determination device 100, each clamping table is used to install a safety valve 200 to be tested, and a vent hole connected to the pipeline 14 and the air path of the safety valve 200 to be tested is provided at the bottom center of each clamping table, respectively, to ensure that the gas flowing into the pipeline 14 through the intake valve 11 enters the air path of the safety valve 200 to be tested through the vent hole of the clamping seat 20, so as to provide an air source for the calibration of the safety valve 200 to be tested, and the plurality of clamping tables are arranged to be arranged at intervals along the moving direction of the translation assembly 40, so as to control the translation assembly 40 to translate to the sealing plate 42 to seal with another safety valve 200 to be tested on the adjacent clamping table after completing the calibration of one safety valve 200 to be tested and to achieve the set pressure and sealing performance calibration.

[0064] like Figure 4 As shown, in a further embodiment, the adjusting member 81 is a universal joint, and the limiting member 82 includes a ball head handle and a second driving mechanism 822 for driving the ball head handle to move, and the ball end of the ball head handle abuts against the sealing plate 42. In this embodiment, the adjusting member 81 is a universal joint, that is, the two ends of the universal joint are respectively connected to the sealing plate 42 and the connecting member 41, so as to adjust the sealing angle between the sealing plate 42 and the safety valve 200 to be tested, improve the flexibility of the angle adjustment of the sealing plate 42, and further improve the sealing performance of the sealing plate 42 and the safety valve 200 to be tested, and by designing the limiting member 82 to include a ball head handle and a second driving mechanism 822 for driving the ball head handle to move, after the adjusting member 81 adjusts the sealing plate 42 to be completely fitted with the safety valve 200 to be tested, each second driving mechanism 822 drives the corresponding ball head The handle moves to abut against the sealing plate 42 to provide a supporting force for the sealing plate 42 toward the side of the safety valve 200 to be tested, thereby preventing the sealing plate 42 from being offset due to excessive instantaneous flow after the safety valve 200 to be tested reaches the set pressure. At the same time, since the ball head handle can be suitable for contact at any angle, the ball head handle and the universal joint can cooperate to adjust the fit between the sealing plate 42 and the safety valve 200 to be tested, thereby improving the flexibility of the angle adjustment of the sealing plate 42 and preventing the sealing plate 42 from being offset due to the movement of the universal joint due to the large force on the sealing plate 42 to reduce the sealing performance.

[0065] In this embodiment, each of the multiple pressure sensors 13 of the industrial control chassis 10 has a different measuring range, and the multiple pressure sensors 13 are connected in parallel in the pipeline 14. A suitable pressure sensor 13 can be selected according to the set pressure of the safety valve 200 to be tested, thereby improving the compatibility of the pressure sensor 13 with the set pressure of the safety valve 200 to be tested, thereby improving the accuracy of the automatic determination device 100 in verifying the set pressure of the safety valve 200 to be tested.

[0066] like Figure 4As shown, in a further embodiment, the sealing plate 42 includes a plurality of concentrically arranged sealing rings 421, and each sealing ring 421 cooperates with the safety valve 200 to be tested of different specifications. In this embodiment, by arranging a plurality of concentric sealing rings 421 on the side of the sealing plate 42 facing the safety valve 200 to be tested, it is ensured that when the sealing rings 421 of different specifications are adapted to the safety valve 200 to be tested of different sizes, gas can be discharged from the same opening of the sealing plate 42 to the reversing valve 50, and the specifications of each sealing ring 421 are different, so as to be applicable to the safety valve 200 to be tested of various different specifications, that is, the safety valve 200 to be tested of different specifications selects the sealing ring 421 of the corresponding diameter, so as to ensure the consistency of the sealing effect, and further improve the sealing performance of the sealing plate 42.

[0067] like Figure 2 As shown, in a further embodiment, the translation assembly 40 also includes a first moving member 43 and a second moving member 44, the first moving member 43 moves along a first horizontal direction, the second moving member 44 moves along a vertical direction, the second moving member 44 is fixedly connected to the other end of the connecting member 41, and the second moving member 44 is configured to move relative to the first moving member 43. In this embodiment, the first movable member 43 is configured to move along the first horizontal direction, the second movable member 44 is configured to move along the vertical direction, and the second movable member 44 is configured to move relative to the first movable member 43, so that the first movable member 43 drives the second movable member 44 and the connecting member 41 to move along the first horizontal direction, so as to drive the sealing plate 42 to sequentially achieve a sealed connection with the safety valve 200 to be tested on different clamping seats 20 on the base 30, and the second movable member 44 is configured to move relative to the first movable member 43, so that the first movable member 43 drives the sealing plate 42 to move to a position close to the safety valve 200 to be tested, and controls the second movable member 44 to move along the vertical direction to drive the sealing plate 42 to adapt to the safety valves 200 to be tested of different heights, thereby improving the adaptability flexibility of the automatic determination device 100.

[0068] like Figure 2As shown, in a further embodiment, the translation assembly 40 also includes a horizontal guide rail 45 and a vertical guide rail 46. The horizontal guide rail 45 is located on the back of the first movable member 43, and the horizontal guide rail 45 is configured to extend along the first horizontal direction. The vertical guide rail 46 is located on the front of the first movable member 43, and the vertical guide rail 46 is configured to extend along the vertical direction so that the second movable member 44 moves along the extension direction of the vertical guide rail 46. In this embodiment, the horizontal guide rail 45 is configured to extend along the first horizontal direction and be located on the back of the first movable member 43, and the vertical guide rail 46 is arranged on the front of the first movable member 43, that is, the second movable member 44 is connected to the surface of the first movable member 43 through the vertical guide rail 46, so that the first movable member 43 moves along the extension direction of the horizontal guide rail 45, and the second movable member 44 moves relative to the first movable member 43 along the extension direction of the vertical guide rail 46, that is, the horizontal guide rail 45 provides horizontal guidance for the first movable member 43, and the vertical guide rail 46 provides vertical guidance for the second movable member 44, thereby limiting the sealing plate 42 in the horizontal and vertical directions, improving the guiding accuracy of the translation assembly 40, and further improving the translation stability of the translation assembly 40, and preventing the translation assembly 40 from offset during movement, resulting in the sealing plate 42 being unable to fit with the safety valve 200 to be tested.

[0069] In a further embodiment, the sealing plate 42 is provided with a first through hole, and the automatic determination device 100 further includes a connecting pipe 51, the connecting pipe 51 is located between the sealing plate 42 and the reversing valve 50, and the two ends of the connecting pipe 51 are respectively connected to the first through hole and the reversing valve 50. In this embodiment, the two ends of the connecting pipe 51 are respectively connected to the first through hole and the reversing valve 50, that is, the connecting pipe 51 is connected to the outlet of the safety valve 200 to be tested through the first through hole, so as to guide the gas in the safety valve 200 to be tested to the reversing valve 50, and finally flow into the flow sensor 60 or the bubble meter 70, that is, the existence of the connecting pipe 51 plays a role in guiding the gas in the safety valve 200 to be tested, and the connecting pipe 51 is configured to be able to shrink or extend appropriately with the offset angle of the sealing plate 42 and the connecting member 41, so as to avoid affecting the circulation of the gas when the adjusting member 81 adjusts the angle of the sealing plate 42. Here, the connecting pipe 51 is a telescopic hose.

[0070] In a further embodiment, the connecting member 41 is provided with a second through hole, the second through hole is arranged opposite to the first through hole, and the connecting pipe 51 is arranged to penetrate the second through hole and communicate with the reversing valve 50. In this embodiment, the connecting member 41 is provided with a second through hole arranged opposite to the first through hole in the sealing plate 42, and the connecting pipe 51 is arranged to penetrate the second through hole and communicate with the reversing valve 50. The setting of the second through hole not only guides the connecting pipe 51, but also limits the connecting pipe 51 to prevent the connecting pipe 51 from falling or winding, thereby improving the transmission efficiency of the gas.

[0071] In a further embodiment, the clamping seat 20 includes at least two positioning holes 21, each positioning hole 21 extends from the center of the clamping seat 20 toward the edge, and the clamping seat 20 also includes at least two positioning members 22 arranged corresponding to the positioning holes 21, and the positioning members 22 are configured to move along the positioning holes 21 from the edge of the clamping seat 20 toward the center until the positioning surfaces of all the positioning members 22 abut against the safety valve 200 to be tested. In this embodiment, the number of positioning members 22 of each clamping seat 20 is three, and the three positioning members 22 are evenly distributed on the peripheral side of the clamping seat 20, and each positioning member 22 is configured to move along the extension direction of the positioning hole 21, so that the safety valve 200 to be tested can be fixed when the three positioning members 22 are all moved to abut against the safety valve 200 to be tested, and the three positioning members 22 of each clamping seat 20 can adjust the moving distance of the positioning members 22 according to the size of the safety valve 200 to adapt to the safety valve 200 to be tested of different sizes. Here, the clamping seat 20 is a three-jaw chuck.

[0072] The present invention further provides a verification method of the automatic determination device 100 using any one of the above items. The automatic determination device 100 will not be described in detail here.

[0073] Figure 5 is a schematic flow chart of a method for verifying a set pressure of an automatic determination device according to another embodiment of the present invention, Figure 6 It is a schematic flow chart of a sealing performance verification method of an automatic determination device according to another embodiment of the present invention.

[0074] like Figure 5 As shown, in this embodiment, the calibration method of the automatic determination device 100 for setting pressure includes the following steps:

[0075] Step S100: Control the translation assembly 40 to translate to the sealing plate 42 to block the outlet of the safety valve 200 to be tested;

[0076] Step S220: upon receiving a control instruction to verify the set pressure of the safety valve 200 to be tested, the reversing valve 50 is controlled to be connected with the flow sensor 60, and the vent valve is controlled to be opened and the pressure relief valve 12 is controlled to be disconnected;

[0077] Step S320: monitoring and collecting the flow value of the flow sensor 60 and the pressure value of the pressure sensor 13;

[0078] Step S420: When the pressure value of the pressure sensor 13 reaches the preset pressure of the safety valve 200 to be tested, the pressure increase rate is controlled to be a preset rate;

[0079] Step S520: When the flow value increases to a preset flow value, the corresponding pressure value is collected and used as the set pressure of the safety valve 200 to be tested.

[0080] In this embodiment, when the set pressure of the safety valve 200 to be tested is verified by using the automatic determination device 100, the safety valve 200 to be tested is first fixedly installed on the clamping seat 20. When a control instruction to verify the set pressure of the safety valve 200 to be tested is received, the translation assembly 40 is controlled to translate to the sealing plate 42 to block the outlet of the safety valve 200 to be tested, the reversing valve 50 is controlled to be connected with the flow sensor 60, and the vent valve is controlled to be opened and the pressure relief valve 12 is disconnected to pass gas into the safety valve 200 to be tested, and the flow value of the flow sensor 60 and the pressure value of the pressure sensor 13 are verified. Real-time data collection and monitoring are performed, and when the pressure value of the pressure sensor 13 reaches the preset pressure of the safety valve 200 to be tested, the pressure in the control pipeline 14 continues to increase at a preset rate until the flow value of the flow sensor 60 increases to the preset flow, that is, when the flow value of the flow sensor 60 increases abnormally, the corresponding pressure value is collected and used as the set pressure of the safety valve 200 to be tested, and steps S100 to S520 are repeated to complete three set pressure measurements. The deviations of the three set pressures all meet the standard requirements, and it is determined that the set pressure calibration of the safety valve 200 to be tested is successful. Here, the preset pressure is 90% of the set pressure, and the preset rate is 0.01MPa / s.

[0081] like Figure 6 As shown, in a further embodiment, the verification method further includes a sealing performance test of the safety valve 200 to be tested. The verification method of this embodiment further includes, after step S100:

[0082] Step S210: upon receiving a control instruction for testing the sealing performance of the safety valve 200 to be tested, controlling the reversing valve 50 to be connected to the bubble meter 70;

[0083] Step S310: Control the pressure relief valve 12 to be disconnected and the intake valve 11 to be opened;

[0084] Step S410: When the pressure value of the monitoring pressure sensor 13 is a preset pressure, the number of bubbles in the bubble meter 70 is collected;

[0085] Step S510: determining whether the number of bubbles is less than a standard value;

[0086] Step S610: If yes, determine that the sealing performance of the safety valve 200 to be tested is qualified, otherwise, move the safety valve 200 to be tested out of the clamping seat 20 and perform maintenance, and enter step S100 after the maintenance is completed.

[0087] In this embodiment, when the sealing performance of the safety valve 200 to be tested is verified by using the automatic determination device 100, the safety valve 200 to be tested is first fixedly installed on the clamping seat 20, and when a control instruction for testing the sealing performance of the safety valve 200 to be tested is received, the translation assembly 40 is controlled to translate to the sealing plate 42 to block the outlet of the safety valve 200 to be tested, the reversing valve 50 is controlled to be connected with the bubble meter 70, and the pressure relief valve 12 is controlled to be disconnected and the air intake valve 11 is controlled to be opened, until the pressure value of the pressure sensor 13 connected to the pipeline 14 reaches 90% of the set pressure, the number of bubbles in the bubble meter 70 within the preset time is collected, and it is judged that the number of bubbles is less than the standard value, then it is judged that the sealing performance of the safety valve 200 to be tested is qualified, that is, the sealing performance of the safety valve 200 to be tested is intact, thereby realizing the sealing performance test of the safety valve 200 to be tested. Here, the preset pressure is 90% of the set pressure of the safety valve 200 to be tested.

[0088] In this embodiment, if it is judged that the number of bubbles is greater than the standard value, it means that the sealing performance of the safety valve 200 to be tested does not meet the sealing standard. It is necessary to perform various structural performance tests on the safety valve 200 to be tested to eliminate safety hazards, and re-check the set pressure and sealing performance of the safety valve 200 to be tested until the deviation of the set pressure of three checks meets the standard requirements.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An automatic determination device for a safety valve, characterized in that: include: The industrial control chassis comprises an air intake valve and a pressure relief valve, wherein the air intake valve and the pressure relief valve are respectively connected to a pipeline and control the on-off of the pipeline, and the industrial control chassis further comprises a plurality of pressure sensors, all of which are connected in parallel to one end of the pipeline close to the air intake valve; At least one clamping seat, located on the base, all of the clamping seats are arranged at intervals along a first horizontal direction, and the clamping seat is used to fix and install the safety valve to be tested; a translation assembly, located at one side of the clamping seat along the first horizontal direction, the translation assembly being configured to move along the first horizontal direction, the translation assembly comprising a connecting member extending along a second horizontal direction, an end of the connecting member being provided with a sealing plate that cooperates with the safety valve to be tested for sealing, the first horizontal direction being perpendicular to the second horizontal direction; A reversing valve is located on a side of the connecting member away from the sealing plate, one end of the reversing valve is arranged to be connected to the outlet of the safety valve to be tested, and the other end is arranged to be connected to a flow sensor or a bubble meter alternatively; An adjusting component is located between the sealing plate and the connecting member, the adjusting component comprises an adjusting member and at least three limiting members, the adjusting member is configured to drive the sealing plate to adjust a preset angle until the sealing plate is sealed with the safety valve to be tested, and all the limiting members are controlled to move to abut against the sealing plate; The driving assembly comprises a first driving mechanism, wherein the first driving mechanism is configured to drive the translation assembly to move along the first horizontal direction, so as to drive the sealing plate to move along the first horizontal direction to selectively seal one of the safety valves to be tested located on the clamping seat, so that when the reversing valve is connected to the flow sensor, the set pressure of the safety valve to be tested is verified, and when the reversing valve is connected to the bubble meter, the sealing performance of the safety valve to be tested is verified.

2. The automatic determination device according to claim 1, characterized in that: The adjusting member is a universal joint, and the limiting member includes a ball head handle and a second driving mechanism for driving the ball head handle to move, and the ball head end of the ball head handle abuts against the sealing plate.

3. The automatic determination device according to claim 2, characterized in that: The sealing plate includes a plurality of sealing rings arranged concentrically, and each of the sealing rings cooperates with the safety valve to be tested of different specifications.

4. The automatic determination device according to claim 3, characterized in that: The translation assembly also includes: A first moving member, moving along the first horizontal direction; The second moving member moves in the vertical direction. The second moving member is fixedly connected to the other end of the connecting member, and the second moving member is configured to move relative to the first moving member.

5. The automatic determination device according to claim 4, characterized in that: The translation assembly also includes: a horizontal guide rail, located on the back of the first moving member, the horizontal guide rail being arranged to extend along the first horizontal direction; A vertical guide rail is located in front of the first moving member, and the vertical guide rail is configured to extend along the vertical direction so that the second moving member moves along the extension direction of the vertical guide rail.

6. The automatic determination device according to claim 5, characterized in that: The sealing plate is provided with a first through hole, and the automatic determination device further comprises: A connecting pipe is located between the sealing plate and the reversing valve, and two ends of the connecting pipe are respectively connected to the first through hole and the reversing valve.

7. The automatic determination device according to claim 6, characterized in that: The connecting member is provided with a second through hole, and the second through hole is arranged opposite to the first through hole; The connecting pipe is arranged to penetrate through the second through hole and communicate with the reversing valve.

8. The automatic determination device according to any one of claims 1 to 7, characterized in that: The clamping seat includes at least two positioning holes, each of which extends from the center of the clamping seat toward the edge, and the clamping seat also includes: At least two positioning members are arranged corresponding to the positioning holes, and the positioning members are configured to move along the positioning holes from the edge of the clamping seat toward the center until the positioning surfaces of all the positioning members abut against the safety valve to be tested.

9. A verification method using the automatic determination device according to any one of claims 1 to 8, characterized in that: The steps include: Control the translation assembly to translate to the sealing plate to block the outlet of the safety valve to be tested; When receiving a control instruction to verify the set pressure of the safety valve to be tested, the reversing valve is controlled to be connected with the flow sensor, and the vent valve is controlled to be opened and the pressure relief valve is controlled to be disconnected; Monitoring and collecting the flow value of the flow sensor and the pressure value of the pressure sensor; When the pressure value of the pressure sensor reaches the preset pressure of the safety valve to be tested, controlling the pressure increase rate to be a preset rate; When the flow value increases to a preset flow rate, a corresponding pressure value is collected and used as a set pressure of the safety valve to be tested.

10. The verification method according to claim 9, characterized in that: The verification method is used to test the sealing performance of the safety valve to be tested, and after the step of controlling the translation assembly to translate to the sealing plate to block the outlet of the safety valve to be tested, it also includes: When receiving a control instruction for testing the sealing performance of the safety valve to be tested, controlling the reversing valve to be connected to the bubble meter; Controlling the pressure relief valve to disconnect and the air intake valve to open; When the pressure value of the pressure sensor is monitored to be a preset pressure, collecting the number of bubbles in the bubble meter; Determine whether the number of bubbles is less than a standard value; If yes, it is determined that the sealing performance of the safety valve to be tested is qualified.

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