Diaphragm fixing device capable of generating explosive waves

Abstract

The utility model provides a diaphragm fixing device for generating explosive waves. The diaphragm fixing device is composed of a movable section, a high-pressure diaphragm, a middle section, a low-pressure diaphragm, a fixed section, a hydraulic cylinder and a guide rod. Cylinder bodies of the four hydraulic cylinders installed in parallel are fixedly connected with the fixed section, and cylinder rods are fixedly connected with the movable section. The high-pressure diaphragm is clamped and fixed with the middle section through the movable section, and the low-pressure diaphragm is clamped and fixed with the fixed section through the middle section; three guide rods mounted in parallel are fixedly connected with the fixed section and penetrate through the middle section and the movable section; the diaphragms are fixed in a movable mode, the difficulty in the diaphragm mounting and dismounting process is reduced, the diaphragm mounting and dismounting efficiency is improved, a double-diaphragm structure is adopted, the pressure difference between the two sides of the diaphragms is reduced by dividing the pressure bearing cavity, the peak pressure and the positive pressure time in the explosion wave test process are prolonged, and the explosion wave test efficiency is improved. And the application range of the explosion wave test is expanded.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of explosion wave test equipment, and particularly relates to a diaphragm fixing device for generating an explosion wave. BACKGROUND

[0002] There are flammable and explosive chemicals in a petrochemical industrial park, and once a fire breaks out, a serious explosion will occur, which will destroy buildings and pipe network systems, etc., so the petrochemical industrial park should have the ability to resist explosion impact.

[0003] At present, how to calculate the impact damage effect of an explosion wave on a structure is still lack of relevant experimental data. In order to master the survival ability of different materials and different building structures in an explosion, relevant tests must be carried out.

[0004] In order to realize the generation of an impact wave by sudden release of high-pressure gas, simulate the impact effect of an explosive, and evaluate the damage process of an explosion process on a large building structure and a pipeline, a diaphragm needs to be arranged in a high-pressure gas container, and when the diaphragm is broken due to the pressure difference between the inside and outside, an explosion impact wave is generated, and the impact damage effect of the explosion impact wave on a structure is studied.

[0005] In the prior art, the diaphragm is arranged at the outlet of a pressure container, and when the pressure difference between the inside and outside reaches a certain degree, the diaphragm is broken to generate an impact wave. After the diaphragm is broken, structural deformation occurs, and it is difficult to take out the diaphragm from the original installation position. The pressure container needs to be removed first, and then the diaphragm is taken out, which is relatively complex to operate. At the same time, the single diaphragm has limited pressure bearing capacity, and cannot realize simulation of a higher peak pressure and positive pressure time, so the test scene is limited. CONTENT OF THE INVENTION

[0006] The application aims at the above technical problems, and provides a diaphragm fixing device for generating an explosion wave, which uses a movable way to fix the diaphragm, reduces the difficulty in the installation and removal process of the diaphragm, and improves the efficiency of the installation and removal of the diaphragm.

[0007] The application provides a diaphragm fixing device for generating an explosion wave, which is composed of a movable section 1, a high-pressure diaphragm 2, an intermediate section 3, a low-pressure diaphragm 4, a fixed section 5, a hydraulic cylinder 6 and a guide rod 7.

[0008] Among them, the cylinder bodies of four parallelly arranged hydraulic cylinders 6 are connected and fixed with the fixed section 5, and the cylinder rods are connected and fixed with the movable section 1. The high-pressure diaphragm 2 is clamped and fixed through the movable section 1 and the intermediate section 3, and the low-pressure diaphragm 4 is clamped and fixed through the intermediate section 3 and the fixed section 5. Three parallelly arranged guide rods 7 are connected and fixed with the fixed section 5, and pass through the intermediate section 3 and the movable section 1.

[0009] Preferably, the hydraulic cylinder 6 is provided with a step and a thread on the cylinder rod, and the movable section 1 is fixed with the oil cylinder rod by installing a nut on the thread, and the cylinder body of the hydraulic cylinder 6 is provided with a round flange, which is connected with the fixed section through bolts and gaskets.

[0010] Preferably, the guide rod 7 is provided with a thread at one end, and is fixed with the fixed section 5 through the thread connection, and the other end penetrates through the movable section 1 to avoid interference between the movable section 1 and the guide rod 7 during movement.

[0011] Preferably, the movable section 1 and the intermediate section 3 are provided with self-lubricating copper bushings 8 at the contact positions with the guide rod 7, so as to reduce the friction during movement of the movable section 1 and the intermediate section 3 and reduce the difficulty of movement.

[0012] Preferably, the movable section 1 and the fixed section 5 are provided with three circles of hard alloy overlaying tooth rings, and the intermediate section 3 is provided with two circles of hard alloy overlaying tooth rings, and the hard alloy overlaying tooth rings on the movable section 1, the fixed section 5 and the intermediate section 3 are staggered with each other, so as to improve the fixing effect of the diaphragm.

[0013] Preferably, the movable section 1, the intermediate section 3 and the fixed section 5 are provided with sealing grooves at the contact positions with the diaphragm, and the sealing grooves are filled with O-shaped sealing rings, so as to ensure the sealing effect of the diaphragm with the front and rear sections, prevent the diaphragm from leaking in the unbroken state, and affect the generation of the explosion shock wave.

[0014] The application has the following technical effects:

[0015] The application adopts a movable way to fix the diaphragm, reduces the difficulty in the process of installing and removing the diaphragm, and improves the efficiency of installing and removing the diaphragm.

[0016] The application adopts a double-diaphragm structure, reduces the pressure difference on both sides of the diaphragm by dividing the pressure-bearing cavity, improves the peak pressure and positive pressure time in the explosion wave test process, and expands the application range of the explosion wave test. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure diagram of the diaphragm fixing device;

[0018] Figure 2 It is a side view of the diaphragm fixing device;

[0019] Figure 3 It is a structure diagram of the oil cylinder;

[0020] Figure 4 It is a structure diagram of the self-lubricating bearing;

[0021] Figure 5 It is a structure diagram of the tooth ring and the sealing groove. DETAILED DESCRIPTION

[0022] Please refer to Figures 1-5The application provides a diaphragm fixing device for generating explosion waves, which mainly comprises a movable section 1, a high-pressure diaphragm 2, an intermediate section 3, a low-pressure diaphragm 4, a fixed section 5, a hydraulic cylinder 6 and a guide rod 7.

[0023] Four parallelly-installed hydraulic cylinders 6 are connected with the fixed section 5, and the cylinder rods are connected with the movable section 1; the high-pressure diaphragm 2 is clamped and fixed through the movable section 1 and the intermediate section 3, and the low-pressure diaphragm 4 is clamped and fixed through the intermediate section 3 and the fixed section 5; three parallelly-installed guide rods 7 are connected with the fixed section 5 and pass through the intermediate section 3 and the movable section 1.

[0024] The diaphragm fixing device for generating explosion waves provided by the application can moveably fix the diaphragm, reduces the difficulty in the process of diaphragm installation and removal, and improves the efficiency of diaphragm installation and removal.

[0025] The diaphragm fixing device for generating explosion waves provided by the application adopts a double-diaphragm structure, reduces the pressure difference on both sides of the diaphragm by dividing the pressure-bearing cavity, improves the peak pressure and positive pressure time in the explosion wave test process, and expands the application range of the explosion wave test.

[0026] In other embodiments of the application, as shown in Figure 1 and Figure 2 , the diaphragm fixing device for generating explosion waves comprises a movable section 1, a high-pressure diaphragm 2, an intermediate section 3, a low-pressure diaphragm 4, a fixed section 5, a hydraulic cylinder 6 and a guide rod 7.

[0027] Four parallelly-installed hydraulic cylinders 6 are connected with the fixed section 5, and the cylinder rods are connected with the movable section 1; the high-pressure diaphragm 2 is clamped and fixed through the movable section 1 and the intermediate section 3, and the low-pressure diaphragm 4 is clamped and fixed through the intermediate section 3 and the fixed section 5; three parallelly-installed guide rods 7 are connected with the fixed section 5 and pass through the intermediate section 3 and the movable section 1.

[0028] As shown in Figure 3 , the hydraulic cylinder 6 is provided with a step and a thread on the oil cylinder rod, the movable section 1 is fixed with the oil cylinder rod by installing a nut on the thread, and the cylinder body of the hydraulic cylinder 6 is provided with a circular flange which is connected with the fixed section through bolts and gaskets.

[0029] As shown in Figure 4 , one end of the guide rod 7 is provided with a thread and is connected with the fixed section 5 through the thread, and the other end passes through the movable section 1 to avoid interference between the movable section 1 and the guide rod 7. Self-lubricating copper sleeves 8 are arranged at the contact positions of the movable section 1, the intermediate section 3 and the guide rod 7 to reduce the friction force in the moving process of the movable section 1 and the intermediate section 3 and reduce the moving difficulty.

[0030] As shown in Figure 5As shown, three circles of hard alloy overlaying tooth rings are arranged on the active section 1 and the fixed section 5, two circles of hard alloy overlaying tooth rings are arranged on the middle section 3, the hard alloy overlaying tooth rings on the active section 1, the fixed section 5 and the middle section 3 are staggered with each other, and the fixing effect of the diaphragm is improved; the sealing grooves are arranged on the active section 1, the middle section 3 and the fixed section 5 at the positions contacting with the diaphragm, and the O-shaped sealing rings are filled in the sealing grooves, so as to ensure the sealing effect of the diaphragm and the front and rear sections, prevent the diaphragm from leaking under the condition of not being broken, and affect the generation of the explosion shock wave.

[0031] In other embodiments of the present application, a diaphragm fixing device for generating an explosion wave is provided, mainly consisting of an active section 1, a high-pressure diaphragm 2, a middle section 3, a low-pressure diaphragm 4, a fixed section 5, a hydraulic cylinder 6 and a guide rod 7.

[0032] Among them, four parallelly installed hydraulic cylinders 6 are connected and fixed with the fixed section 5, and the cylinder rods are connected and fixed with the active section 1; the high-pressure diaphragm 2 is clamped and fixed through the active section 1 and the middle section 3, and the low-pressure diaphragm 4 is clamped and fixed through the middle section 3 and the fixed section 5; three parallelly installed guide rods 7 are connected and fixed with the fixed section 5, and pass through the middle section 3 and the active section 1.

[0033] Among them, a ladder and a thread are arranged on the oil cylinder rod of the hydraulic cylinder 6, and the active section 1 is connected through bolts and gaskets; a flange is arranged on the cylinder body of the hydraulic cylinder 6, and the fixed section is connected through bolts and gaskets.

[0034] Among them, self-lubricating copper sleeves 8 are arranged on the active section 1 and the middle section 3, and are connected with the guide rods 7.

[0035] Among them, three circles of hard alloy overlaying tooth rings are arranged on the active section 1 and the fixed section 5, two circles of hard alloy overlaying tooth rings are arranged on the middle section 3, and the hard alloy overlaying tooth rings on the active section 1, the fixed section 5 and the middle section 3 are staggered with each other.

[0036] Among them, sealing grooves are arranged on the active section 1, the middle section 3 and the fixed section 5 at the positions contacting with the diaphragm, and O-shaped sealing rings are filled in the sealing grooves.

Claims

1. A membrane holder for generating blast waves, characterized in that The device is composed of a movable section (1), a high-pressure diaphragm (2), an intermediate section (3), a low-pressure diaphragm (4), a fixed section (5), a hydraulic cylinder (6) and a guide rod (7); The cylinder body of the four parallelly installed hydraulic cylinders (6) is connected with the fixed section (5), and the cylinder rod is connected with the movable section (1); the high-pressure diaphragm (2) is clamped and fixed through the movable section (1) and the intermediate section (3), and the low-pressure diaphragm (4) is clamped and fixed through the intermediate section (3) and the fixed section (5); the three parallelly installed guide rods (7) are connected with the fixed section (5) and pass through the intermediate section (3) and the movable section (1).

2. The apparatus of claim 1, wherein, The hydraulic cylinder (6) is provided with a ladder and a thread on the cylinder rod, a nut is installed on the thread to fix the movable section (1) and the cylinder rod, and a circular flange is arranged on the cylinder body of the hydraulic cylinder (6) and connected with the fixed section through bolts and gaskets.

3. The apparatus of claim 2, wherein, The guide rod (7) is provided with a thread at one end and connected with the fixed section (5) through the thread, and passes through the movable section (1) at the other end to avoid interference between the movable section (1) and the guide rod (7) during movement.

4. The apparatus of claim 3, wherein, Self-lubricating copper sleeves (8) are arranged at the contact positions of the movable section (1), the intermediate section (3) and the guide rod (7) to reduce the friction during movement of the movable section (1) and the intermediate section (3) and reduce the difficulty of movement.

5. The apparatus of claim 4, wherein, Three circles of hard alloy overlaying tooth rings are arranged on the movable section (1) and the fixed section (5), and two circles of hard alloy overlaying tooth rings are arranged on the intermediate section (3), the hard alloy overlaying tooth rings on the movable section (1), the fixed section (5) and the intermediate section (3) are staggered, and the fixing effect of the diaphragm is improved.

6. The apparatus of claim 5, wherein, Sealing grooves are arranged on the movable section (1), the intermediate section (3) and the fixed section (5) at the contact positions with the diaphragm, O-shaped sealing rings are filled in the sealing grooves, the sealing effect of the diaphragm and the front and rear sections is ensured, leakage of the diaphragm under the condition of not being broken is prevented, and the generation of explosion shock wave is affected.

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