Bursting pressure measuring device of high-pressure ultra-large flow safety valve

Abstract

The utility model discloses a bursting pressure measuring device of a high-pressure ultra-large flow safety valve, and particularly relates to the technical field of safety of pressure equipment, which comprises a high-pressure cylinder and a control assembly, one end of the high-pressure cylinder is provided with an assembling window used for connecting a digital display pressure gauge and installing the safety valve, and a connecting gear is meshed with a rotating seat. A threaded roller connected with a rotating seat is in threaded connection with a high-pressure cylinder, a propelling seat at the end of the threaded roller slides in the high-pressure cylinder and is sealed by a sealing ring, a digital display pressure gauge is installed and powered on, a control assembly is used for pressurizing, the threaded roller is propelled, the hydraulic oil pressure is uniformly and stably increased, and the digital display pressure gauge displays the pressure in real time until a safety valve explodes and records a peak value. The diameter ratio of the rotating base, the connecting gear and the driving cylinder is designed to be a large transmission ratio of two to one to four, motor overload is avoided, long-term reliable and stable work of the device is guaranteed, the propelling speed and displacement of the threaded roller are accurately controlled through reasonable transmission, pressure is uniformly increased, the pressure increasing process of the safety valve is accurately simulated, and the bursting pressure is accurately measured.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure equipment safety technical field, concretely is a kind of burst pressure measuring device of high-pressure super-large flow safety valve. BACKGROUND

[0002] The process device and storage and transportation equipment of chemical industry and other industries are mostly fluid (liquid, gas or steam). In order to meet the process and storage and transportation requirements, the equipment for processing these fluid materials should have certain pressure bearing capacity. The pressure bearing capacity of the equipment is generally given at the time of equipment design. Once the actual pressure of the fluid exceeds the pressure bearing capacity of the equipment, the equipment will appear excessive plastic deformation and even be damaged by rupture. The safety valve is a safety device for preventing overpressure damage of fluid pressure equipment.

[0003] Under prior art, for example, a kind of burst pressure measuring device of safety valve is disclosed in Chinese patent with publication number CN209513451U, measuring device includes pressurizing equipment, digital pressure gauge;The pressurizing equipment (with at least three input and output ports;The digital pressure gauge is at least two, and is connected with pressurizing equipment;Safety valve to be burst is connected with the pressurizing equipment.

[0004] The above-mentioned device can complete the measurement of burst pressure, but in actual use, it is necessary to manually rotate the pressurizing handle of hydraulic bed, and manually rotating the pressurizing handle means that the operator needs to continuously exert force to increase the pressure. In the measurement process, if a higher pressure value needs to be reached or multiple measurements need to be performed, the operator will easily be tired. When measuring the burst pressure of some high-pressure super-large flow safety valve, the pressure may need to be increased to tens of megapascals or even higher, and long-time manual operation of the pressurizing handle will cause the operator's arm to ache, and the labor intensity is too high.

[0005] Manual operation is difficult to ensure uniform and stable pressure rise. It is difficult for the operator to accurately control the amplitude and speed of each handle rotation, which may cause fluctuations in pressure increase. Compared with automatic pressurization, manual operation cannot accurately pressurize according to the preset pressure change rate, which may affect the accuracy of the measurement result. Therefore, we propose a kind of burst pressure measuring device of high-pressure super-large flow safety valve to solve the above problems. INVENTION CONTENTS

[0006] The utility model aims at solving the technical problem that prior art cannot accurately pressurize according to the preset pressure change rate.

[0007] Therefore, the technical scheme adopted by the utility model is as follows:

[0008] The utility model provides a burst pressure measuring device of high pressure super large flow safety valve, including high pressure cylinder, a plurality of assembly window for connecting digital display pressure gauge and installing valve are seted up to high pressure cylinder one end, the control assembly for controlling the hydraulic oil pressure of inner chamber is provided with to high pressure cylinder the other end, the control assembly includes servo motor, servo motor tail and external guide piece slide connection, servo motor output fixedly connected with drive roll, drive roll away from servo motor one end fixedly connected with rotating disc, rotating disc away from drive roll one side fixedly connected with drive cylinder, drive cylinder inner wall sets up a plurality of evenly distributed tooth groove, drive cylinder is built in a plurality of connecting gear, connecting gear evenly distributes in drive cylinder inside, connecting gear and drive cylinder are connected through tooth groove, drive cylinder is built in rotating seat, the diameter ratio of rotating seat, connecting gear and drive cylinder is two ratio one ratio four, rotating seat one side fixedly connected with screw roll close to high pressure cylinder, screw roll one end passes through high pressure cylinder and extends to the cylinder, screw roll one end fixedly connected with propelling seat in high pressure cylinder inside.

[0009] Preferably, the connecting gear is fixedly connected with a rotating roller on the side away from the drive cylinder.

[0010] Preferably, the connecting gear is fixedly connected with a rotating roller on the side away from the drive cylinder.

[0011] Preferably, the servo motor output is towards the high pressure cylinder.

[0012] Preferably, the connecting gear is fixedly connected with a rotating roller on the side away from the drive cylinder.

[0013] Preferably, the screw roll and the high pressure cylinder axis coincide, and the screw roll is threadedly connected with the high pressure cylinder.

[0014] Preferably, the connecting cylinder is fixedly connected with the high pressure cylinder outer wall on the side away from the rotating roller.

[0015] Preferably, the propelling seat is slidably connected with the high pressure cylinder inner wall, and the propelling seat is sleeved with a sealing ring.

[0016] By adopting the above technical scheme, the utility model has the beneficial effects of:

[0017] The utility model discloses a kind of burst pressure measuring devices of high-pressure super-large flow safety valve, mainly by high-pressure cylinder and control assembly constitute.High-pressure cylinder one end has assembly window for connecting digital pressure gauge and installing safety valve, and the control assembly of other end includes servo motor.Servo motor is driven roll, rotating disc and driven cylinder rotation is driven, driven cylinder is engaged with connecting gear by tooth groove, connecting gear is engaged with rotating seat, and the threaded roller connected with rotating seat is screwed with high-pressure cylinder, and the end of its advancing seat slides in high-pressure cylinder and has sealing ring sealing.

[0018] Digital pressure gauge is installed and energized, and safety valve is accessed and set to zero.Control assembly pressurizes, and threaded roller advances, and uniform and stable hydraulic oil pressure is raised, and digital pressure gauge displays pressure in real time until safety valve bursts and records peak value.

[0019] The threaded roller advancing speed and displacement amount are accurately controlled by reasonable transmission, pressure is evenly raised, safety valve pressure increasing process is accurately simulated, accurate burst pressure is measured, the diameter ratio of rotating seat, connecting gear and driven cylinder is two to one to four, power-saving principle is used, motor pressure is reduced, motor overload is avoided, motor life is prolonged, device long-term reliable and stable work is guaranteed, and practicality is strong. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic view of the utility model.

[0021] Figure 2 It is the internal structure schematic view of the utility model high-pressure cylinder.

[0022] Figure 3 It is the control assembly structure schematic view of the utility model.

[0023] Figure 4 It is the driven cylinder and connecting gear assembly structure schematic view of the utility model.

[0024] Figure 5 It is the rotating seat and driven cylinder assembly structure schematic view of the utility model.

[0025] In the drawing: 1, high-pressure cylinder;101, assembly window;2, control assembly;201, servo motor;202, driven roll;203, rotating disc;204, driven cylinder;205, tooth groove;206, connecting gear;207, rotating roller;208, connecting cylinder;209, rotating seat;210, tooth;211, threaded roller;212, advancing seat;213, sealing ring. DETAILED DESCRIPTION

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example: Figures 1-5 As shown, this utility model provides a burst pressure measuring device for a high-pressure ultra-large flow safety valve, including a high-pressure cylinder 1. One end of the high-pressure cylinder 1 has multiple assembly windows 101 for connecting digital pressure gauges and installing valves. The other end of the high-pressure cylinder 1 is provided with a control component 2 for controlling the hydraulic oil pressure in the inner cavity. The control component 2 includes a servo motor 201, the output end of which faces the high-pressure cylinder 1. The end of a threaded roller 211 away from the rotating seat 209 extends through the high-pressure cylinder 1 into the cylinder. The axis of the threaded roller 211 coincides with that of the high-pressure cylinder 1. The threaded roller 211 is threadedly connected to the high-pressure cylinder 1. One end of the threaded roller 211 inside the high-pressure cylinder 1 is fixedly connected to a pusher seat 212. The pusher seat 212 is slidably connected to the inner wall of the high-pressure cylinder 1. Sealing rings 213 are sleeved around the pusher seat 212. Multiple digital pressure gauges with peak recording function are installed through the assembly windows 101 at one end of the high-pressure cylinder 1 and powered on to make them workable. After the digital pressure gauge stabilizes, connect the safety valve to be burst into another assembly window 101 of the high-pressure cylinder 1. Before starting the pressurization operation, set the digital pressure gauge to "zero" to accurately record the peak pressure value as the pressure increases until the safety valve bursts. As the control component 2 continuously pressurizes the hydraulic oil, the digital pressure gauge displays the current hydraulic oil pressure value in real time until the safety valve bursts, at which point the digital pressure gauge records the corresponding burst pressure peak.

[0028] Meanwhile, the driving roller 202 is fixedly connected to the output end of the servo motor 201, one end of the driving roller 202 away from the servo motor 201 is fixedly connected to the rotating disc 203, one side of the rotating disc 203 away from the driving roller 202 is fixedly connected to the driving cylinder 204, a plurality of evenly distributed tooth grooves 205 are formed in the inner wall of the driving cylinder 204, a plurality of connecting gears 206 are built in the driving cylinder 204, the plurality of connecting gears 206 are evenly distributed around the axis of the driving cylinder 204, the connecting gears 206 are matched with the tooth grooves 205, the connecting gears 206 are meshingly connected with the driving cylinder 204 through the tooth grooves 205, one side of the connecting gears 206 away from the driving cylinder 204 is fixedly connected to the rotating roller 207, one end of the rotating roller 207 away from the connecting gears 206 is rotatably connected to the connecting cylinder 208, one end of the connecting cylinder 208 away from the rotating roller 207 is fixedly connected to the outer wall of the high-pressure cylinder 1, the rotating seat 209 is built in the driving cylinder 204, the plurality of connecting gears 206 are distributed around the rotating seat 209, a plurality of evenly distributed gear teeth 210 are fixedly connected around the rotating seat 209, the rotating seat 209 is meshingly connected with the plurality of connecting gears 206 through the gear teeth 210, the diameter ratio of the rotating seat 209, the connecting gears 206 and the driving cylinder 204 is two to one to four, one side of the rotating seat 209 close to the high-pressure cylinder 1 is fixedly connected to the threaded roller 211, and the control assembly 2 in the device plays a key role. After the servo motor 201 is started, the output end of the servo motor 201 drives the driving roller 202 to rotate, since the driving roller 202 is fixedly connected with the rotating disc 203 and the driving cylinder 204 in turn, the driving cylinder 204 will synchronously rotate. A plurality of evenly distributed tooth grooves 205 are formed in the inner wall of the driving cylinder 204, the plurality of connecting gears 206 built in the driving cylinder 204 are matched with the tooth grooves 205 and are meshingly connected, when the driving cylinder 204 rotates, the connecting gears 206 will rotate correspondingly under the action of the tooth grooves 205. The connecting gears 206 are meshingly connected with the rotating seat 209 through the gear teeth 210, and a plurality of evenly distributed gear teeth 210 are fixedly connected around the rotating seat 209, and the plurality of connecting gears 206 are distributed around the rotating seat 209. In this way, the rotation of the driving cylinder 204 drives the rotating seat 209 to rotate through the transmission of the connecting gears 206. One side of the rotating seat 209 close to the high-pressure cylinder 1 is fixedly connected to the threaded roller 211, and the threaded roller 211 is threadedly connected with the high-pressure cylinder 1, and one end of the threaded roller 211 inside the high-pressure cylinder 1 is fixedly connected to the advancing seat 212, the advancing seat 212 is slidingly connected with the inner wall of the high-pressure cylinder 1 and is sleeved with a sealing ring 213 to ensure the sealing property. When the rotating seat 209 drives the threaded roller 211 to rotate, the threaded roller 211 will move along the axial direction of the high-pressure cylinder 1 under the action of the thread, thereby pushing the advancing seat 212 to move in the high-pressure cylinder 1, extruding the hydraulic oil in the cylinder, the overall length of the rotating seat 209 is relatively long, which can satisfy that the rotating seat 209 does not disengage from the meshing with the connecting gears 206 in the moving process, so that the hydraulic oil pressure is increased, and then the pressure is applied to the safety valve connected, simulating the pressure environment that the safety valve bears in the actual working condition.

[0029] The threaded roller 211 is driven by the servo motor 201, a series of transmission components (such as a driving roller 202, a rotating disc 203, a driving cylinder 204, a connecting gear 206, a rotating seat 209, and the like) to realize the adjustment of the hydraulic oil pressure in the high-pressure cylinder 1, so that the advancing speed and displacement of the threaded roller 211 can be controlled more accurately, and thus the process of increasing the hydraulic oil pressure is more uniform and stable, and the pressure mutation and the like are avoided, and then the process of gradually increasing the pressure until reaching the burst pressure in the actual work of the safety valve can be simulated more accurately, which is helpful for accurately measuring the burst pressure value of the safety valve.

[0030] There is a specific diameter ratio (two to one to four) among the rotating seat 209, the connecting gear 206, and the driving cylinder 204, and this large transmission ratio design is very ingenious. It is equivalent to using the principle of labor-saving in mechanical transmission, and under the condition that the servo motor 201 outputs a certain torque, after the transmission ratio conversion, the force finally acting on the threaded roller 211 to push the hydraulic oil to increase the pressure can meet the requirements, while effectively reducing the pressure demand of the servo motor 201 itself, avoiding the motor from malfunctioning due to overload and the like, prolonging the service life of the motor, and ensuring the reliability and stability of the entire measuring device in long-time and multiple measurement work. The burst pressure measuring device realizes uniform and accurate pressure increase to accurately measure the burst pressure of the safety valve, and reduces the motor pressure in the working process, and has good practicability and reliability.

[0031] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and the equivalent technology thereof, the present application also intends to include these modifications and variations.

Claims

1. A device for measuring the burst pressure of a high-pressure, ultra-high-flow safety valve, characterized in that, The utility model relates to a high pressure cylinder (1) one end is equipped with a plurality of assembly window (101) for connecting digital display pressure gauge and installing valve, the other end of high pressure cylinder (1) is provided with control assembly (2) for controlling the hydraulic oil pressure of inner chamber, control assembly (2) includes servo motor (201), servo motor (201) tail and external guide piece sliding connection, servo motor (201) output fixedly connected with drive roller (202), drive roller (202) away from servo motor (201) one end fixedly connected with rotating disc (203), rotating disc (203) away from drive roller (202) one side fixedly connected with drive cylinder (204), drive cylinder (204) inner wall is equipped with a plurality of evenly distributed gear slot (205), drive cylinder (204) is built in a plurality of connecting gear (206), connecting gear (206) evenly distributes in drive cylinder (204) inside, connecting gear (206) and drive cylinder (204) are engagedly connected through gear slot (205), drive cylinder (204) is built in rotating seat (209), rotating seat (209), connecting gear (206) and drive cylinder (204) diameter ratio is two ratio one ratio four, rotating seat (209) is fixedly connected with threaded roller (211) on the side close to high pressure cylinder (1), threaded roller (211) one end extends to the cylinder through high pressure cylinder (1) away from rotating seat (209), threaded roller (211) one end fixedly connected with advancing seat (212) in high pressure cylinder (1) inside.

2. The burst pressure measuring device for a high pressure, high flow safety valve according to claim 1, wherein Connecting gear (206) one side fixedly connected with rotating roller (207) away from drive cylinder (204), rotating roller (207) one end rotatably connected with connecting cylinder (208) away from connecting gear (206).

3. The burst pressure measuring device for a high pressure, high flow safety valve of claim 1, wherein, A plurality of connecting gear (206) evenly distribute around drive cylinder (204) axis, connecting gear (206) is matched with gear slot (205).

4. The burst pressure measuring device for a high pressure, high flow safety valve of claim 1, wherein, Servo motor (201) output end faces high pressure cylinder (1).

5. The burst pressure measuring device for a high pressure, high flow safety valve of claim 1, wherein, A plurality of connecting gear (206) surround rotating seat (209) and distribute, rotating seat (209) is fixedly connected with a plurality of evenly distributed gear teeth (210) around, rotating seat (209) is engagedly connected with a plurality of connecting gear (206) through gear teeth (210).

6. The burst pressure measuring device for a high pressure, high flow safety valve of claim 1, wherein, Threaded roller (211) and high pressure cylinder (1) axis coincide, threaded roller (211) is connected with high pressure cylinder (1) threadedly.

7. The burst pressure measuring device for a high pressure, high flow safety valve of claim 2, wherein, Connecting cylinder (208) one end fixedly connected with high pressure cylinder (1) outer wall away from rotating roller (207).

8. The burst pressure measuring device of a high pressure super high flow safety valve according to claim 1, wherein Advancing seat (212) and high pressure cylinder (1) inner wall sliding connection, advancing seat (212) is sleeved with sealing ring (213) around.

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