A safety valve working pressure detection device

Abstract

The present invention belongs to the technical field of safety valve production, and provides a safety valve working pressure detection device, including a support frame, the support frame is fixedly connected to a fixing frame, a plurality of placement holes are arranged side by side on the end surface of the fixing frame, a No. 3 electric rod is arranged on the upper side of the fixing frame, the No. 3 electric rod is fixedly connected to the support frame, the telescopic end of the No. 3 electric rod is fixedly connected to a fixing plate, a plurality of connectors are rotatably connected to the fixing plate, all the connectors are connected to the air pump through a hose, and a joint is rotatably connected between the hose and each connector. In this invention, through the hydraulic pressure in the hydraulic box, each frustum can apply the same thrust to the safety valve connecting flange, so that the safety valve connecting flange can be parallel to the end surface of the sealing sleeve, so that the relative positions between the heads of the corresponding connectors of all safety valves are the same, so as to avoid insufficient sealing when individual safety valves are connected to the connectors.

Description

Technical Field

[0001] The invention belongs to the technical field of safety valve production, and in particular relates to a safety valve working pressure detection device. Background Art

[0002] Safety valves are special valves whose opening and closing parts are in a normally closed state under the action of external forces. When the medium pressure in the equipment or pipeline exceeds the specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. Safety valves belong to the automatic valve category and are mainly used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value, which plays an important protective role in personal safety and equipment operation. Safety valves must undergo pressure tests before they can be used.

[0003] When the existing safety valve working pressure detection device tests the safety valves, the working efficiency is low if the safety valves are tested one by one. If multiple safety valves are pressure tested at the same time, multiple safety valves need to be positioned at the same time and sealed with the air pressure device during the test.

[0004] However, when multiple safety valves are connected to the air pressure device at the same time, it is difficult to keep all the safety valves aligned with the air pressure device. If the positioning of individual safety valves is deviated, the safety valves will not be sealed tightly, affecting the test results. The safety valves with detection deviations need to be re-tested, which is a cumbersome process. Moreover, when multiple safety valves are continued to be sealed and connected, the position deviation of the safety valves leads to different degrees of tightness between the connection of each safety valve and the docking device, which in turn affects the accuracy of the test results. Summary of the invention

[0005] The purpose of the present invention is to provide a safety valve working pressure detection device, which aims to solve the technical problems in the prior art that when multiple safety valves continue to be sealed and connected, it is difficult to keep all safety valves aligned with the air pressure device, and the connection tightness of each safety valve and the connection device is different, which affects the accuracy of the test results.

[0006] The present invention is implemented as follows: a safety valve working pressure detection device comprises a support frame, the support frame is fixedly connected to a fixing frame, a plurality of placement holes are arranged side by side on the end surface of the fixing frame, a No. 3 electric rod is arranged on the upper side of the fixing frame, the No. 3 electric rod is fixedly connected to the support frame, a fixing plate is fixedly connected to the telescopic end of the No. 3 electric rod, a plurality of connectors are rotatably connected to the fixing plate, all the connectors are connected to an air pump through a hose, and a joint is rotatably connected between the hose and each connector, and a one-way air valve for unidirectionally guiding air to its head is arranged in each connector;

[0007] The fixed plate is provided with a driving assembly, which can drive all the connectors to rotate synchronously, and the outside of each connector is provided with a sealing mechanism, which can contact and seal with the connecting flange of the safety valve; a hydraulic thrust mechanism is provided on the periphery of each placement hole, and the hydraulic thrust mechanism can push the connecting flange of the safety valve to move upward and parallel to the lower end surface of the sealing mechanism through hydraulic pressure;

[0008] A detection box is arranged on the upper part of the support frame, and a plurality of closed cavities are arranged in the detection box. A connecting sleeve is connected between each placement hole and a closed cavity in the detection box, and a clamping mechanism for positioning the safety valve is arranged in the connecting sleeve;

[0009] The detection system can detect the air pressure of each safety valve and each closed cavity in the detection box, and judge the airtightness of each safety valve according to the change of air pressure of each safety valve and each closed cavity in the detection box.

[0010] Further technical solution: the driving assembly includes a No. 1 electric rod, a rack plate and a gear;

[0011] The No. 1 electric rod is fixedly connected to the lower end surface of the fixed plate, and the telescopic end of the No. 1 electric rod is slidably connected to multiple rack plates. The rack plate and the telescopic end of the No. 1 electric rod are elastically connected, each connecting head is fixedly connected to a gear, and each gear is meshed with a rack plate.

[0012] Further technical solution: the sealing mechanism comprises a sliding sleeve, a spring No. 1, a sealing sleeve, a rubber block, a rubber strip and a sealing assembly;

[0013] A sliding sleeve is slidably connected along the length direction of the connector, and a No. 1 spring is arranged between the sliding sleeve and the connector, the sliding sleeve is threadedly connected to a sealing sleeve, a plurality of sliding grooves are arranged in the lower end surface of the sealing sleeve, a rubber block is slidably and sealingly connected in each sliding groove, a plurality of rubber strips are arranged on the end surface of the rubber block away from the sliding groove, all the rubber strips are inclined in the same direction around the center of the sealing sleeve, and a sealing component is arranged outside all the rubber strips.

[0014] Further technical solution: The sealing component includes a guide groove and an airbag, the lower end surface of the sealing sleeve is annularly provided with a guide groove, a plurality of airbags are arranged in the guide groove, and each airbag is connected to a slide groove.

[0015] Further technical solution: the hydraulic thrust mechanism includes a push rod, a sleeve, a second spring, a round table and a hydraulic box;

[0016] A plurality of push rods are arranged at equal intervals around the placement hole, and the push rods are vertically slidably connected to the end surface of the fixing frame, and the lower end surface of the fixing frame is fixedly connected to a hydraulic box, and the hydraulic box is filled with lubricating oil. A sleeve is fixedly arranged on the top surface of the hydraulic box facing each push rod, and the lower ends of the push rods are slidably connected in the sleeve. A No. 2 spring is arranged between the lower end of the push rod and the bottom surface of the sleeve, and the sleeve is connected to the inner cavity of the fixing frame. The part of the push rod located on the upper side of the fixing frame is fixedly connected to a round table;

[0017] The fixing frame is fixed with an oil tank, and a hydraulic pump is connected between the oil tank and the hydraulic box.

[0018] Further technical solution: the top of the push rod is universally connected with a ball, the inner top surface of the airbag is provided with a plurality of slots, each slot is arranged between two airbags, and when the sealing sleeve moves downward, all the balls can be embedded in the corresponding slots.

[0019] Further technical solution: The clamping mechanism includes a No. 2 electric rod and a positioning block, and the outer wall of the connecting sleeve is annularly fixedly connected with multiple No. 2 electric rods. The telescopic end of the No. 2 electric rod is inserted into the inside of the connecting sleeve, and the telescopic end of the No. 2 electric rod is fixedly connected with a positioning block, and the No. 2 electric rod is sealed with the outer wall of the connecting sleeve.

[0020] Further technical solution: The detection system includes multiple No. 1 air pressure sensors and multiple No. 2 air pressure sensors, each connecting head is provided with a No. 1 air pressure sensor, and each closed cavity of the detection box is provided with a No. 2 air pressure sensor.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Through the hydraulic pressure in the hydraulic box, each round table can apply the same thrust to the safety valve connection flange, so that the safety valve connection flange can be parallel to the end face of the sealing sleeve. Then all the clamping mechanisms are started, and all the clamping mechanisms fix the safety valves, so that the relative positions between the heads of the corresponding connectors of all safety valves are the same, to avoid the skewed placement of individual safety valves, resulting in insufficient sealing when connecting individual safety valves to the connectors, resulting in large deviations in the test results;

[0023] 2. The sealing sleeve rotates with the connector, so that the rubber block drives the rubber strip to clean the end face of the safety valve connecting flange; when the rubber block slides into the slide groove, the air in the slide groove enters the corresponding airbag, thereby expanding the airbag, and further sealing the sealing sleeve and the safety valve flange through all the airbags;

[0024] 3. As the connector drives the sealing sleeve to rotate, the airbag moves relative to the ball, and the ball rolls accordingly, applying lubricating oil to the airbag through the ball, thereby increasing the sealing between the airbag and the safety valve flange; and after the airbag seals the sealing sleeve and the safety valve connection flange, if gas leakage occurs between the sealing sleeve and the safety valve connection flange, the leaked high-pressure gas will drive the oil to flow out of the sealing sleeve. At this time, observing the oil stains on the outside of the sealing sleeve can determine the location of the gas leakage of the safety valve;

[0025] 4. When the sealing sleeve is vertically pressed against the safety valve connecting flange and cannot move, all the balls can be embedded in the corresponding slots; at this time, the No. 1 electric rod continues to extend, and under the thrust of the No. 1 electric rod, the rack plate contracts toward the inside of the No. 1 electric rod, and the rack plate and the gear move relative to each other. Through the cooperation of all the balls and the slots, the relative positions of all the sealing sleeves and the corresponding connectors can be made the same, thereby increasing the reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure of the driving component in the present invention.

[0028] Figure 3 for Figure 2 A magnified schematic diagram of area A in the middle.

[0029] Figure 4 It is a structural schematic diagram of the sealing mechanism in the present invention.

[0030] Figure 5 For the present invention Figure 4 Half section view.

[0031] Figure 6 It is a schematic diagram of the connection between the hydraulic thrust mechanism and the fixing frame in the present invention.

[0032] Figure 7 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0033] Figure 8 for Figure 7 A magnified schematic diagram of area B.

[0034] In the attached drawings: 1. support frame; 2. fixing frame; 3. placement hole; 4. driving assembly; 41. No. 1 electric rod; 42. rack plate; 43. gear; 5. sealing mechanism; 51. sliding sleeve; 52. No. 1 spring; 53. sealing sleeve; 54. rubber block; 55. rubber strip; 56. closing assembly; 561. guide groove; 562. air bag; 57. slide groove; 6. hydraulic thrust mechanism; 61. push rod; 62. sleeve; 63. No. 2 spring; 64. round table; 65. hydraulic box; 66. hydraulic pump; 7. detection box; 8. connecting sleeve; 9. clamping mechanism; 91. No. 2 electric rod; 92. positioning block; 10. No. 3 electric rod; 11. fixing plate; 12. connector; 13. air pump; 14. oil tank; 15. slot; 16. ball bearing. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0037] like Figure 1-Figure 8 As shown, a safety valve working pressure detection device provided by the present invention comprises a support frame 1, wherein the support frame 1 is fixedly connected to a fixing frame 2, a plurality of placement holes 3 are arranged side by side on the end surface of the fixing frame 2, a No. 3 electric rod 10 is arranged on the upper side of the fixing frame 2, the No. 3 electric rod 10 is fixedly connected to the support frame 1, a fixing plate 11 is fixedly connected to the telescopic end of the No. 3 electric rod 10, a plurality of connectors 12 are rotatably connected to the fixing plate 11, all the connectors 12 are connected to an air pump 13 through a hose, and a joint is rotatably connected between the hose and each connector 12, and each connector 12 is provided with a one-way air valve for unidirectionally guiding air to its head;

[0038] The fixing plate 11 is provided with a driving assembly 4, which can drive all the connectors 12 to rotate synchronously. A sealing mechanism 5 is provided on the outside of each connector 12, which can contact and seal with the connecting flange of the safety valve; a hydraulic thrust mechanism 6 is provided on the periphery of each placement hole 3, which can push the connecting flange of the safety valve to move upward and be parallel to the lower end surface of the sealing mechanism 5 through hydraulic pressure;

[0039] A detection box 7 is provided on the upper part of the support frame 1, and a plurality of closed cavities are provided in the detection box 7. A connecting sleeve 8 is connected between each placement hole 3 and a closed cavity in the detection box 7, and a clamping mechanism 9 for positioning the safety valve is provided in the connecting sleeve 8;

[0040] The detection system can detect the air pressure of each safety valve and each closed cavity in the detection box 7, and judge the airtightness of each safety valve according to the change of air pressure of each safety valve and each closed cavity in the detection box 7.

[0041] In this embodiment, each safety valve to be tested is placed in each placement hole 3, and the connecting flange of the safety valve is placed on each hydraulic thrust mechanism 6, and the pressure relief head of the safety valve is in the connecting sleeve 8;

[0042] During the test, the No. 3 electric rod 10 is started to extend, and the No. 3 electric rod 10 drives all the connectors 12 to move downward through the fixing plate 11, and the sealing mechanisms 5 outside all the connectors 12 are close to the connecting flanges of all the safety valves. After that, when all the connectors 12 are lowered to a certain position, the hydraulic thrust mechanism 6 can push the connecting flanges of all the safety valves to move upward at the same time and be parallel to the lower end faces of each sealing mechanism 5 through the hydraulic pressure, and all the clamping mechanisms 9 are started to fix all the safety valves through all the clamping mechanisms 9, so as to avoid the relative deflection between the connecting flange of the safety valve and the head of the connector 12, thereby causing the subsequent safety valve The poor sealing between the connecting flange and the head of the connector 12;

[0043] Then the third electric rod 10 continues to drive all the connectors 12 to move downward, and the driving assembly 4 drives all the connectors 12 to rotate, and all the connectors 12 are threadedly connected with the connecting flanges of all the safety valves at the same time, and the sealing mechanism 5 and the connecting flanges of the safety valves are in contact and pressed against each other, so that the sealing between the safety valves and the connectors 12 is further enhanced;

[0044] Then, the air pump 13 is started, and the air pump 13 inflates each safety valve through each connector 12. The detection system can detect the air pressure of each safety valve and each closed cavity in the detection box 7, and determine the pressure limit of each safety valve pressure relief head according to the air pressure changes of each safety valve and each closed cavity in the detection box 7.

[0045] like Figure 2 and Figure 3 As shown, a safety valve working pressure detection device provided by the present invention is provided, wherein the driving assembly 4 includes a No. 1 electric rod 41, a rack plate 42 and a gear 43;

[0046] The No. 1 electric rod 41 is fixedly connected to the lower end surface of the fixed plate 11, and the telescopic end of the No. 1 electric rod 41 is slidably connected to multiple rack plates 42. The rack plates 42 are elastically connected to the telescopic end of the No. 1 electric rod 41, and each connecting head 12 is fixedly connected to a gear 43, and each gear 43 is meshed with a rack plate 42.

[0047] In this embodiment, the No. 1 electric rod 41 is started to extend, and the No. 1 electric rod 41 drives all the rack plates 42 to move horizontally. All the rack plates 42 drive the gears 43 connected thereto to rotate through meshing transmission. Each gear 43 drives the connector 12 fixed thereto to rotate synchronously. Therefore, when all the connectors 12 move downward, the connectors 12 can rotate at the same time, so that all the connectors 12 are threadedly connected to each safety valve.

[0048] like Figure 4 and Figure 5 As shown, a safety valve working pressure detection device provided by the present invention is provided, wherein the sealing mechanism 5 comprises a sliding sleeve 51, a No. 1 spring 52, a sealing sleeve 53, a rubber block 54, a rubber strip 55 and a sealing assembly 56;

[0049] A sliding sleeve 51 is slidably connected along the length direction of the connector 12, and a No. 1 spring 52 is arranged between the sliding sleeve 51 and the connector 12. The sliding sleeve 51 is threadedly connected to a sealing sleeve 53. A plurality of sliding grooves 57 are arranged in the lower end surface of the sealing sleeve 53. A rubber block 54 is slidably and sealingly connected in each sliding groove 57. A plurality of rubber strips 55 are arranged on the end surface of the rubber block 54 away from the sliding groove 57. All the rubber strips 55 are inclined in the same direction around the center of the sealing sleeve 53, and a closing component 56 is arranged outside all the rubber strips 55.

[0050] In this embodiment, when the connector 12 drives the sliding sleeve 51 and the sealing sleeve 53 to move downward, the rubber strip 55 on the rubber block 54 first contacts the end surface of the safety valve connecting flange. At this time, the sealing sleeve 53 rotates with the connector 12, so that the rubber block 54 drives the rubber strip 55 to clean the end surface of the safety valve connecting flange. All rubber strips 55 are arranged in an inclined direction around the center of the sealing sleeve 53 in the same direction, so that dust and impurities on the end surface of the safety valve connecting flange can fall outward, thereby preventing dust and impurities on the end surface of the safety valve connecting flange from affecting the subsequent sealing of the safety valve.

[0051] At this time, the rubber block 54 slides into the slide groove 57 under the action of extrusion, and the slide groove 57 increases the air pressure in the closing component 56. Under the action of the air pressure, the closing component 56 further seals the sealing sleeve 53 and the safety valve connecting flange.

[0052] like Figure 4 As shown, a safety valve working pressure detection device provided by the present invention is provided. The closing component 56 includes a guide groove 561 and an air bag 562. The lower end surface of the sealing sleeve 53 is provided with a guide groove 561 in an annular shape. A plurality of air bags 562 are provided in the guide groove 561, and each air bag 562 is connected to a slide groove 57.

[0053] In this embodiment, when the rubber block 54 slides into the slide groove 57 , the air in the slide groove 57 enters the corresponding airbag 562 , thereby causing the airbag 562 to expand, and all the airbags 562 further seal the sealing sleeve 53 and the safety valve flange.

[0054] like Figure 6 , Figure 7 and Figure 8 As shown, a safety valve working pressure detection device provided by the present invention is provided, wherein the hydraulic thrust mechanism 6 comprises a push rod 61, a sleeve 62, a second spring 63, a round table 64 and a hydraulic box 65;

[0055] A plurality of push rods 61 are arranged at equal intervals around the circumference of the placement hole 3, and the push rods 61 are vertically slidably connected to the end surface of the fixing frame 2. A hydraulic box 65 is fixedly connected to the lower end surface of the fixing frame 2, and the hydraulic box 65 is filled with lubricating oil. A sleeve 62 is fixedly arranged on the top surface of the hydraulic box 65 facing each push rod 61, and the lower end of the push rod 61 is slidably connected in the sleeve 62. A second spring 63 is arranged between the lower end of the push rod 61 and the bottom surface of the sleeve 62. The sleeve 62 is connected to the inner cavity of the fixing frame 2, and the part of the push rod 61 located on the upper side of the fixing frame 2 is fixedly connected to a round table 64;

[0056] The fixing frame 2 is fixed with an oil tank 14 , and a hydraulic pump 66 is connected between the oil tank 14 and the hydraulic box 65 .

[0057] In this embodiment, the connection holes on the safety valve connection flange are aligned with each push rod 61, the safety valve connection flange is placed downward, the connection holes of the safety valve connection flange overlap each round platform 64, and the safety valve is horizontally positioned by each round platform 64 to prevent the safety valve from rotating horizontally when the connector 12 is threadedly connected to the safety valve.

[0058] When the No. 3 electric rod 10 drives all the connectors 12 to move downward and approach the safety valve connection flange, the hydraulic pump 66 is started, and the hydraulic pump 66 increases the oil pressure in the hydraulic box 65, so that all the push rods 61 in the hydraulic box 65 slide upward along the corresponding sleeves 62. At this time, all the push rods 61 drive the round tables 64 connected to them to jointly push the safety valve connection flange upward. At this time, the safety valve connection flange contacts each rubber block 54, and all the push rods 61 also correspondingly abut against the guide grooves 561;

[0059] Through the hydraulic pressure in the hydraulic box 65, each cone 64 can apply the same thrust to the safety valve connecting flange, so that the safety valve connecting flange can be parallel to the end face of the sealing sleeve 53, and then all the clamping mechanisms 9 are started, and all the clamping mechanisms 9 fix the safety valves, so that the relative positions between the heads of all the safety valves corresponding to the connecting heads 12 are the same, so as to avoid the skewed placement of individual safety valves, resulting in insufficient sealing when the individual safety valves are connected to the connecting head 12, resulting in a large deviation in the detection results.

[0060] like Figure 8 As shown, a safety valve working pressure detection device provided by the present invention is provided. The top of the push rod 61 is universally connected with a ball 16, and the inner top surface of the airbag 562 is provided with a plurality of slots 15, each of which is provided between two airbags 562. When the sealing sleeve 53 moves downward, all the balls 16 can be embedded in the corresponding slots 15.

[0061] In this embodiment, when the ball 16 abuts against the airbag 562 in the guide groove 561 along with the push rod 61, as the connector 12 drives the sealing sleeve 53 to rotate, the airbag 562 moves relative to the ball 16, and the ball 16 rolls accordingly, and lubricating oil is applied to the airbag 562 through the ball 16, thereby increasing the sealing between the airbag 562 and the safety valve flange; and after the airbag 562 seals the sealing sleeve 53 and the safety valve connecting flange, if gas leakage occurs between the sealing sleeve 53 and the safety valve connecting flange, the leaked high-pressure gas will drive the oil to flow out of the sealing sleeve 53. At this time, observing the oil stains on the outside of the sealing sleeve 53 can determine the location of the safety valve gas leakage.

[0062] Under the thrust of the rack plate 42, the connector 12 drives the sealing sleeve 53 to rotate. When the sealing sleeve 53 is vertically pressed against the safety valve connecting flange and cannot move, all the balls 16 can be embedded in the corresponding slots 15. At this time, the No. 1 electric rod 41 continues to extend. Since the sealing sleeve 53 and the connecting flange are relatively fixed, under the thrust of the No. 1 electric rod 41, the rack plate 42 contracts toward the inside of the No. 1 electric rod 41 and the rack plate 42 and the gear 43 move relative to each other. Through the cooperation of all the balls 16 and the slots 15, the relative positions of all the sealing sleeves 53 and the corresponding connectors 12 can be made the same, thereby increasing the reliability of the detection results.

[0063] like Figure 7 As shown, a safety valve working pressure detection device provided by the present invention is provided. The clamping mechanism 9 includes a No. 2 electric rod 91 and a positioning block 92. The outer wall of the connecting sleeve 8 is annularly fixedly connected with multiple No. 2 electric rods 91. The telescopic ends of the No. 2 electric rods 91 are inserted into the interior of the connecting sleeve 8, and the telescopic ends of the No. 2 electric rods 91 are fixedly connected with the positioning blocks 92. The No. 2 electric rods 91 are sealed and connected to the outer wall of the connecting sleeve 8.

[0064] In this embodiment, all the No. 2 electric rods 91 in each connecting sleeve 8 are simultaneously started to extend, and all the No. 2 electric rods 91 drive the positioning blocks 92 connected thereto to clamp and fix the safety valve.

[0065] The present invention provides a safety valve working pressure detection device, wherein the detection system includes a plurality of No. 1 air pressure sensors and a plurality of No. 2 air pressure sensors, each connector 12 is provided with a No. 1 air pressure sensor, and each closed cavity of the detection box 7 is provided with a No. 2 air pressure sensor.

[0066] In this embodiment, the air pump 13 fills air pressure into each safety valve through the connector 12, and the air pressure changes in each cavity in the detection box 7 are observed. When the cavity air pressure in the detection box 7 increases, it means that the air pressure in the safety valve on the upper side of the cavity has reached the working pressure limit.

[0067] Working principle:

[0068] Place each safety valve to be tested in each placement hole 3, align the connection holes on the safety valve connection flange with each push rod 61, place the safety valve connection flange downward, the pressure relief head of the safety valve is in the connection sleeve 8, and the connection holes of the safety valve connection flange overlap each round platform 64, and the safety valve is horizontally positioned through each round platform 64;

[0069] During the test, the No. 3 electric rod 10 is started to extend, and the No. 3 electric rod 10 drives all the connectors 12 to move downward through the fixing plate 11. When the No. 3 electric rod 10 drives all the connectors 12 to move downward and approach the safety valve connection flange, the hydraulic pump 66 is started at this time, and the hydraulic pump 66 increases the oil pressure in the hydraulic box 65, so that all the push rods 61 in the hydraulic box 65 slide upward along the corresponding sleeves 62. At this time, all the push rods 61 drive the round table 64 connected to them to jointly push the safety valve connection flange upward. At this time, the safety valve connection flange contacts each rubber block 54, and all the push rods 61 also correspondingly abut against the guide groove 561;

[0070] Through the hydraulic pressure in the hydraulic box 65, each truncated table 64 can apply the same thrust to the safety valve connection flange, so that the safety valve connection flange can be parallel to the end surface of the sealing sleeve 53, and then all the clamping mechanisms 9 are started, and all the clamping mechanisms 9 fix the safety valves, so that the relative positions between the heads of all the safety valves corresponding to the connectors 12 are the same, so as to avoid the individual safety valves being placed skewed, resulting in insufficient sealing when the individual safety valves are connected to the connector 12, resulting in a large deviation in the detection results;

[0071] At this time, the rubber strip 55 on the rubber block 54 contacts the end face of the safety valve connection flange, and the air pump 13 drives the connector 12 to continue to move downward. At this time, the driving assembly 4 drives all the connectors 12 to rotate, and all the connectors 12 are threadedly connected with the connection flanges of all the safety valves at the same time. At the same time, the sealing sleeve 53 gradually contacts and presses against the connection flange of the safety valve, thereby further enhancing the sealing between the safety valve and the connector 12.

[0072] The sealing sleeve 53 rotates with the connector 12, so that the rubber block 54 drives the rubber strip 55 to clean the end surface of the safety valve connecting flange; when the rubber block 54 slides into the slide groove 57, the air in the slide groove 57 enters the corresponding airbag 562, so that the airbag 562 expands, and the sealing sleeve 53 and the safety valve flange are further sealed through all the airbags 562;

[0073] When the ball 16 abuts against the airbag 562 in the guide groove 561 along with the push rod 61, as the connector 12 drives the sealing sleeve 53 to rotate, the airbag 562 moves relative to the ball 16, and the ball 16 rolls accordingly, and lubricating oil is applied to the airbag 562 through the ball 16, thereby increasing the sealing performance between the airbag 562 and the safety valve flange; and after the airbag 562 seals the sealing sleeve 53 and the safety valve connection flange, if gas leakage occurs between the sealing sleeve 53 and the safety valve connection flange, the leaked high-pressure gas will drive the oil to flow out of the sealing sleeve 53. At this time, observing the oil stains on the outside of the sealing sleeve 53 can determine the gas leakage position of the safety valve;

[0074] Under the thrust of the rack plate 42, the connector 12 drives the sealing sleeve 53 to rotate. When the sealing sleeve 53 is vertically pressed against the safety valve connecting flange and cannot move, all the balls 16 can be embedded in the corresponding slots 15. At this time, the No. 1 electric rod 41 continues to extend. Since the sealing sleeve 53 and the connecting flange are relatively fixed, under the thrust of the No. 1 electric rod 41, the rack plate 42 contracts toward the inside of the No. 1 electric rod 41 and the rack plate 42 and the gear 43 move relative to each other. Through the cooperation of all the balls 16 and the slots 15, the relative positions of all the sealing sleeves 53 and the corresponding connectors 12 can be made the same, thereby increasing the reliability of the detection results.

[0075] Then, the air pump 13 is started, and the air pump 13 inflates each safety valve through each connector 12. The detection system can detect the air pressure of each safety valve and each closed cavity in the detection box 7, and determine the pressure limit of each safety valve pressure relief head according to the air pressure changes of each safety valve and each closed cavity in the detection box 7.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0077] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A safety valve working pressure detection device, comprising a support frame (1), wherein the support frame (1) is fixedly connected to a fixing frame (2), characterized in that: A plurality of placement holes (3) are arranged side by side on the end surface of the fixing frame (2); a No. 3 electric rod (10) is arranged on the upper side of the fixing frame (2); the No. 3 electric rod (10) is fixedly connected to the support frame (1); a fixing plate (11) is fixedly connected to the telescopic end of the No. 3 electric rod (10); a plurality of connectors (12) are rotatably connected to the fixing plate (11); all the connectors (12) are connected to the air pump (13) via a hose; a joint is rotatably connected between the hose and each connector (12); and each connector (12) is provided with a one-way air valve for unidirectionally guiding air to its head; The fixing plate (11) is provided with a driving assembly (4), the driving assembly (4) being capable of driving all the connectors (12) to rotate synchronously, and each connector (12) being provided with a sealing mechanism (5) on its exterior, the sealing mechanism (5) being capable of contacting and sealing with a connecting flange of the safety valve; each placement hole (3) is provided with a hydraulic thrust mechanism (6) on its circumference, the hydraulic thrust mechanism (6) being capable of pushing the connecting flange of the safety valve upwards and parallel to the lower end surface of the sealing mechanism (5) through hydraulic pressure; A detection box (7) is arranged on the upper part of the support frame (1), and a plurality of sealed cavities are arranged in the detection box (7). A connecting sleeve (8) is connected between each placement hole (3) and a sealed cavity in the detection box (7), and a clamping mechanism (9) for positioning the safety valve is arranged in the connecting sleeve (8); A detection system is capable of detecting the air pressure of each safety valve and each sealed cavity in the detection box (7), and judging the airtightness of each safety valve according to the change of the air pressure of each safety valve and each sealed cavity in the detection box (7).

2. The safety valve working pressure detection device according to claim 1, characterized in that: The driving assembly (4) comprises a first electric rod (41), a rack plate (42) and a gear (43); The first electric rod (41) is fixedly connected to the lower end surface of the fixed plate (11); the telescopic end of the first electric rod (41) is slidably connected to a plurality of rack plates (42); the rack plates (42) are elastically connected to the telescopic end of the first electric rod (41); each connector (12) is fixedly connected to a gear (43); and each gear (43) is meshed with a rack plate (42).

3. The safety valve working pressure detection device according to claim 1, characterized in that: The sealing mechanism (5) comprises a sliding sleeve (51), a No. 1 spring (52), a sealing sleeve (53), a rubber block (54), a rubber strip (55), and a sealing component (56); A sliding sleeve (51) is slidably connected along the length direction of the connector (12), and a first spring (52) is arranged between the sliding sleeve (51) and the connector (12). The sliding sleeve (51) is threadedly connected to a sealing sleeve (53). A plurality of sliding grooves (57) are arranged in the lower end surface of the sealing sleeve (53), and a rubber block (54) is slidably and sealingly connected in each sliding groove (57). A plurality of rubber strips (55) are arranged on the end surface of the rubber block (54) away from the sliding groove (57), and all the rubber strips (55) are arranged obliquely in the same direction around the center of the sealing sleeve (53), and a sealing component (56) is arranged outside all the rubber strips (55).

4. The safety valve working pressure detection device according to claim 3, characterized in that: The sealing component (56) comprises a guide groove (561) and an air bag (562). The lower end surface of the sealing sleeve (53) is provided with a guide groove (561) in an annular shape. A plurality of air bags (562) are provided in the guide groove (561), and each air bag (562) is connected to a slide groove (57).

5. The safety valve working pressure detection device according to claim 4, characterized in that: The hydraulic thrust mechanism (6) comprises a push rod (61), a sleeve (62), a No. 2 spring (63), a round table (64) and a hydraulic box (65); A plurality of push rods (61) are arranged at equal intervals around the placement hole (3), and the push rods (61) are vertically slidably connected to the end surface of the fixing frame (2). The lower end surface of the fixing frame (2) is fixedly connected to a hydraulic box (65), and the hydraulic box (65) is filled with lubricating oil. A sleeve (62) is fixedly arranged on the top surface of the hydraulic box (65) at a position facing each push rod (61). The lower end of the push rod (61) is slidably connected to the sleeve (62). A second spring (63) is arranged between the lower end of the push rod (61) and the bottom surface of the sleeve (62). The sleeve (62) is connected to the inner cavity of the fixing frame (2), and the part of the push rod (61) located on the upper side of the fixing frame (2) is fixedly connected to a round table (64); An oil tank (14) is fixedly placed on the fixed frame (2), and a hydraulic pump (66) is connected between the oil tank (14) and the hydraulic box (65).

6. The safety valve working pressure detection device according to claim 5, characterized in that: The top of the push rod (61) is universally connected to a ball (16), and the inner top surface of the airbag (562) is provided with a plurality of slots (15), each slot (15) is provided between two airbags (562), and when the sealing sleeve (53) moves downward, all the balls (16) can be embedded in the corresponding slots (15).

7. The safety valve working pressure detection device according to claim 1, characterized in that: The clamping mechanism (9) comprises a No. 2 electric rod (91) and a positioning block (92); a plurality of No. 2 electric rods (91) are annularly fixedly connected to the outer wall of the connecting sleeve (8); telescopic ends of the No. 2 electric rods (91) are inserted into the interior of the connecting sleeve (8); and the telescopic ends of the No. 2 electric rods (91) are all fixedly connected to the positioning block (92); and the No. 2 electric rods (91) are all sealedly connected to the outer wall of the connecting sleeve (8).

8. The safety valve working pressure detection device according to claim 1, characterized in that: The detection system comprises a plurality of No. 1 air pressure sensors and a plurality of No. 2 air pressure sensors, each connector (12) is provided with a No. 1 air pressure sensor, and each sealed cavity of the detection box (7) is provided with a No. 2 air pressure sensor.

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