Overpressure protection device for test

Abstract

The utility model belongs to the technical field of overpressure protection, and particularly relates to an overpressure protection device for tests, which comprises a device body, a pressure relief groove is arranged at the end of the device body, air leakage holes distributed in a circumferential array are arranged on the inner wall of the pressure relief groove of the device body, a piston plate and an abutting plate are slidably connected in the pressure relief groove, and the piston plate is connected with the abutting plate. A spring is arranged between the piston plate and the abutting plate, vent holes are formed in the positions, corresponding to the deflation holes, of the piston plate, and each vent hole is in through connection with a bottom hole formed in the piston plate. According to the utility model, through the arrangement of the overpressure protection device capable of releasing air, when the air pressure of the equipment is too high, the air can jack up the piston plate in the pressure release groove, so that the vent hole in the piston plate is butted with the air release hole, and the redundant air of the equipment is discharged out of the equipment along the vent hole and the air release hole, thereby achieving the pressure release effect and ensuring the test safety.

Description

Technical Field

[0001] The utility model relates to the technical field of overpressure protection, in particular to an overpressure protection device for testing. Background Art

[0002] When testing the internal compressive strength of pipelines and gas tanks, in order to avoid overpressure in the pipelines or tanks, which may affect the test results, or cause dangers such as bursting of equipment or devices such as pipelines and gas tanks, it is necessary to ensure the safety of the test and avoid bursting of equipment such as pipelines and gas tanks due to internal overpressure. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the utility model provides an overpressure protection device for testing, which solves the problem that the current test of the internal compressive strength of pipelines and gas tanks is very unsafe.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A test overpressure protection device comprises a device body, a pressure relief groove is provided at the end of the device body, and air relief holes distributed in a circumferential array are provided on the inner wall of the pressure relief groove. A piston plate and a resistance plate are slidably connected in the pressure relief groove, a spring is provided between the piston plate and the resistance plate, and air vents are provided at corresponding positions of the piston plate relative to each air relief hole, and each of the air vents is through-connected with a bottom hole provided on the piston plate.

[0008] Furthermore, a threaded rod is slidably connected in the sliding groove opened on the device body, a threaded ring is provided on the outer threaded sleeve of the threaded rod, the threaded ring is rotatably connected to the inner wall of the pressure relief groove, the movable end of the threaded rod is abuttingly connected to one side of the abutment plate, and a rotating component for driving the threaded ring to rotate is provided on the device body.

[0009] Furthermore, the rotating assembly includes a servo motor and a gear, wherein the servo motor is arranged on the device body, and the movable shaft of the servo motor is fixedly connected to the axis of the gear, and the gear is meshedly connected to the gear ring arranged outside the threaded ring.

[0010] Furthermore, the movable end of the threaded rod is fixedly connected to a mounting plate, a pressure sensor is arranged on the mounting plate, and a sensing end of the pressure sensor is in contact connection with one side of the contact plate.

[0011] Furthermore, the device body is fixedly connected to the inner wall of the slide groove with wire rods distributed in a circumferential array, and a wire groove is opened at a corresponding position of the threaded rod relative to each wire rod, and the wire groove is slidably connected to the wire rod.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a test overpressure protection device, which has the following

[0014] Beneficial effects:

[0015] 1. The utility model is provided with an overpressure protection device that can release air. When the air pressure of the equipment is too high, the gas will lift up the piston plate in the pressure relief groove, so that the vent hole on the piston plate is connected with the air leakage hole, and the excess gas of the equipment will be discharged outside the equipment along the vent hole and the air leakage hole, so as to achieve the pressure relief effect and ensure the safety of the test.

[0016] 2. The utility model adjusts the distance between the end of the threaded rod and the piston plate by rotating the threaded ring, thereby increasing the elastic force or thrust of the spring, thereby adjusting the compressive strength of the piston plate. Therefore, the compressive strength of the piston plate can be adjusted according to the maximum compressive strength that different equipment can withstand, thereby effectively improving the applicability of the test overpressure protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model as a whole;

[0018] Figure 2 It is a three-dimensional schematic diagram of the first mode of the overall cross-section of the utility model;

[0019] Figure 3 It is a three-dimensional schematic diagram of the second overall cross-section of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the cooperation of the piston plate, the threaded rod and the threaded ring of the utility model.

[0021] In the figure: 1. device body; 2. servo motor; 3. air vent; 4. gear; 5. threaded rod; 6. pressure sensor; 7. contact plate; 8. piston plate; 9. air vent; 10. pressure relief groove; 11. bottom hole; 12. threaded ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] like Figures 1 to 4 As shown, an experimental overpressure protection device proposed in one embodiment of the utility model comprises a device body 1, a pressure relief groove 10 is provided at the end of the device body 1, and a circumferential array of air leakage holes 3 are provided on the inner wall of the pressure relief groove 10 of the device body 1, a piston plate 8 and a contact plate 7 are slidably connected in the pressure relief groove 10, a spring is provided between the piston plate 8 and the contact plate 7, and a vent hole 9 is provided at a corresponding position of the piston plate 8 relative to each air leakage hole 3, and each vent hole 9 is connected to a bottom hole 11 provided on the piston plate 8;

[0025] The device body 1 is installed on equipment or devices such as pipelines or gas tanks. During the test, the vent hole 9 on the piston plate 8 and the air leakage hole 3 are in a misaligned state with each other; when the internal air pressure of the equipment is too high, the gas will push up the piston plate 8 in the pressure relief groove 10, and the piston plate 8 will compress the spring, and the vent hole 9 on the piston plate 8 will dock with the air leakage hole 3, so that the gas in the equipment will enter the vent hole 9 along the bottom hole 11, and then be discharged from the equipment from the air leakage hole 3, thereby achieving the equipment pressure relief effect.

[0026] like Figure 1 As shown, in some embodiments, a threaded rod 5 is slidably connected in a slide groove provided on the device body 1, a threaded ring 12 is provided on the outer thread sleeve of the threaded rod 5, the threaded ring 12 is rotatably connected to the inner wall of the pressure relief groove 10, the movable end of the threaded rod 5 is in contact with one side of the contact plate 7, and a rotating component for driving the threaded ring 12 to rotate is provided on the device body 1;

[0027] The threaded ring 12 is rotated according to the compressive strength of the equipment, and the threaded ring 12 drives the threaded rod 5 to approach or move away from the piston plate 8, thereby adjusting the thrust of the spring.

[0028] like Figure 3 As shown, in some embodiments, the rotating assembly includes a servo motor 2 and a gear 4, the servo motor 2 is arranged on the device body 1, and the movable shaft of the servo motor 2 is fixedly connected to the axis of the gear 4, and the gear 4 is meshed with a gear ring arranged outside the threaded ring 12;

[0029] The servo motor 2 is electrically connected to the power supply. The servo motor 2 drives the gear 4 to rotate, and the gear 4 drives the threaded ring 12 to rotate.

[0030] like Figure 2 As shown, in some embodiments, the movable end of the threaded rod 5 is fixedly connected to a mounting plate, a pressure sensor 6 is provided on the mounting plate, and a sensing end of the pressure sensor 6 is in contact with one side of the contact plate 7;

[0031] The pressure sensor 6 can sense the compressive strength value of the piston plate 8, thereby facilitating the adjustment of the position of the threaded rod 5.

[0032] like Figure 2 As shown, in some embodiments, the device body 1 is fixedly connected to the inner wall of the slide groove with wire rods distributed in a circular array, and a wire groove is opened at the corresponding position of the threaded rod 5 relative to each wire rod, and the wire groove is slidably connected to the wire rod.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An overpressure protection device for testing, comprising a device body (1), characterized in that: A pressure relief groove (10) is provided at the end of the device body (1), and air relief holes (3) distributed in a circumferential array are provided on the inner wall of the pressure relief groove (10) of the device body (1). A piston plate (8) and a contact plate (7) are slidably connected in the pressure relief groove (10), a spring is provided between the piston plate (8) and the contact plate (7), and a vent hole (9) is provided at a corresponding position of the piston plate (8) relative to each air relief hole (3), and each of the vent holes (9) is connected to a bottom hole (11) provided on the piston plate (8).

2. The overpressure protection device for testing according to claim 1, characterized in that: A threaded rod (5) is slidably connected in a sliding groove provided on the device body (1); a threaded ring (12) is provided on the outer threaded sleeve of the threaded rod (5); the threaded ring (12) is rotatably connected to the inner wall of the pressure relief groove (10); the movable end of the threaded rod (5) is contact-connected with one side of the contact plate (7); and a rotating component for driving the threaded ring (12) to rotate is provided on the device body (1).

3. The overpressure protection device for testing according to claim 2, characterized in that: The rotating assembly comprises a servo motor (2) and a gear (4); the servo motor (2) is arranged on the device body (1), and the movable shaft of the servo motor (2) is fixedly connected to the axis of the gear (4); the gear (4) is meshedly connected to a toothed ring arranged outside the threaded ring (12).

4. The overpressure protection device for testing according to claim 2, characterized in that: The movable end of the threaded rod (5) is fixedly connected to a mounting plate, on which a pressure sensor (6) is arranged, and the sensing end of the pressure sensor (6) is in contact connection with one side of the contact plate (7).

5. The overpressure protection device for testing according to claim 2, characterized in that: The device body (1) is located on the inner wall of the slide groove and is fixedly connected to wire rods distributed in a circumferential array. The threaded rod (5) is provided with a wire groove at a corresponding position relative to each wire rod, and the wire groove is slidably connected to the wire rod.

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