Device and method for testing rupture pressure of rupture disk in high-pressure air blasting cartridge
By using water as the medium instead of air, and utilizing the compressibility of water for rupture disc pressure testing, the time-consuming and unsafe problems of existing technologies are solved, thus achieving safe and efficient rupture disc pressure testing.
Patent Information
- Application Number
- CN202511715693.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-03-20
AI Technical Summary
Existing technologies are time-consuming and lack safety when testing the rupture pressure of rupture discs, and direct testing on the rupture cylinder poses a safety threat from high-pressure air shock waves.
Water is used instead of air as the medium. The compressibility of water allows it to reach hundreds of atmospheres in a short time. The rupture pressure test of the rupture disc is carried out through a medium booster pump, a pressure gauge, and a detachable rupture pack assembly, thus avoiding the generation of high-pressure air shock waves.
This improved the safety and efficiency of the test, shortened the pressurization time, and avoided the threat to personnel and property posed by the high-pressure air explosion shock wave.
Smart Images
Figure CN121702897A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of coal mine gas control technology, specifically relating to a device and method for testing the rupture pressure of rupture discs in a high-pressure air rupture cylinder. Background Technology
[0002] To improve the permeability of coal seams in coal mining areas, researchers have recently proposed "high-pressure air blasting permeability enhancement technology" for coalbed methane control and extraction. This technology utilizes a high-pressure air pressurization pump station to pressurize air, which is then transported to the blasting chamber through a high-pressure pipeline. When the air pressure exceeds the set pressure value of the rupture disc, the blasting valve is opened. The high-pressure air causes the steel rupture disc to rupture in a very short time, allowing the high-pressure air accumulated in the blasting chamber to be suddenly released from the blast opening. This creates a high-pressure air shock wave that blasts and impacts the coal seam, creating a network of interconnected pores of varying sizes in the coal seam surrounding the borehole. These pores cause the coal seam far from the borehole to depressurize, expand, and increase its porosity, achieving the purpose of "blasting" and enhancing the permeability of the coal seam for better control of coalbed methane.
[0003] During use, rupture discs need to be replaced frequently, and different thicknesses of rupture discs correspond to different burst pressures. Therefore, it is necessary to test the burst pressure of rupture discs of different thicknesses before application to more accurately guide on-site blasting operations. Currently, testing the burst pressure of a rupture disc requires direct testing on the rupture cylinder. During the test, the output pressure of the high-pressure air pressurization pump station is continuously increased until the rupture disc bursts. The pressure value before the pressure gauge at the equipment drops instantaneously is recorded as the burst pressure corresponding to a certain thickness of rupture disc. This method is both time-consuming and lacks safety. Therefore, there is a need to find a safe and convenient rupture disc burst pressure testing device to improve testing efficiency and safety. Summary of the Invention
[0004] To address the aforementioned problems, the present invention aims to provide a device for testing the rupture pressure of a rupture disc in a high-pressure air rupture chamber by changing the pressurizing medium from air to water. Because air is compressible, the pressurization process requires a significant amount of energy and time to compress it from atmospheric pressure to hundreds of atmospheres for testing. Water, however, has very low compressibility and can be compressed from atmospheric pressure to hundreds of atmospheres in a much shorter time. Furthermore, changing the pressurizing medium significantly improves the safety of the testing device. When the high-pressure gas at hundreds of atmospheres ruptures the rupture disc, the high-pressure air is released instantaneously from the rupture point, generating a strong shock wave and a large amount of high-pressure gas, posing a significant safety threat to personnel and property at the testing site. High-pressure water, on the other hand, releases pressure instantly after the rupture disc ruptures, flowing at atmospheric pressure, thus preventing high-pressure air rupture shock wave injuries. In addition, the present invention also provides a method for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder. By pressurizing the water medium through a pressure boosting device, the water medium can be pressurized from atmospheric pressure to hundreds of atmospheres within a few minutes, thus quickly completing the rupture pressure test and improving work efficiency.
[0005] To achieve the above objectives, the present invention adopts the following technical solution.
[0006] This invention provides a device for testing the rupture pressure of a rupture disc in a high-pressure air rupture chamber, comprising a medium booster pump, a high-pressure hose, a pressure gauge, and a rupture chamber; the medium booster pump and the rupture chamber are connected via the high-pressure hose, the rupture chamber is composed of two detachably connected components, the two components are connected, a rupture disc is provided at the connection point between the two components, and the two components are connected by threads to form an integral rupture chamber; the pressure gauge is connected to one component of the rupture chamber.
[0007] Furthermore, the medium booster pump is electric or manual, and the internal medium is an incompressible liquid; the output end of the medium booster pump is connected to one end of the high-pressure hose; the connection between the output end of the medium booster pump and one end of the high-pressure hose is by thread, snap-fit, or other secure connection method.
[0008] Furthermore, the medium booster pump is equipped with a pressure display, which can display the output pressure of the medium booster pump in real time.
[0009] Furthermore, the high-pressure hose is made of multi-layer steel wire braided hose, which can withstand pressure of hundreds of atmospheres.
[0010] Furthermore, the two components constituting the blasting package are blasting component A and blasting component B. Blasting component A includes an open end and a regular cavity with a certain depth. The open end is connected to and communicates with the regular cavity. An installation groove is provided on the inner wall of the regular cavity located at the point of communication with the open end, and a rupture disc is installed in the installation groove. The inner diameter of the open end is smaller than the inner diameter of the regular cavity and the diameter of the tested rupture disc. Threads are also provided on the inner wall of the regular cavity. Blasting component B has a three-way structure and is provided with three interface ends: a first external threaded interface end, a pressure measurement interface end, and a second external threaded interface end. The thread on the first external threaded interface end has the same pitch as the thread on the inner wall of the regular cavity, and the first external threaded interface end can reliably and tightly connect to the regular cavity. The pressure measurement interface end is tightly connected to a pressure gauge, and the connection between the pressure measurement interface end and the pressure gauge is by thread or other secure connection method. The second external threaded interface end is tightly connected to the other end of the high-pressure hose.
[0011] Furthermore, the cross-sectional shape of the regular cavity is consistent with the shape of the tested rupture disc.
[0012] Furthermore, the pressure gauge is either mechanical or electronically operated.
[0013] This invention provides a method for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder. The method utilizes the aforementioned testing device for the rupture pressure of a rupture disc in a high-pressure air rupture cylinder. The specific testing method includes the following steps: Step 1: Inject water into the medium booster pump: Inject sufficient water into the water storage container of the medium booster pump.
[0014] Step 2, Assembly of the rupture package: Install the test rupture disc into the regular cavity of rupture component A, then tightly thread the first external threaded interface end of rupture component B to the regular cavity of rupture component A, and finally install the pressure gauge on the pressure measurement interface end of rupture component B.
[0015] Step 3: Assembly of the rupture disc bursting pressure testing device: Securely connect the second external threaded interface end of component B to the high-pressure hose, and then securely connect the high-pressure hose to the output end of the medium booster pump.
[0016] Step 4, Rupture disc rupture pressure test: Turn on the medium booster pump to pressurize the pipeline system. When the rupture disc ruptures, stop the medium booster pump and record the peak pressure of the pressure gauge on component B, which is the rupture disc rupture pressure.
[0017] Step 5, Repeat the test: Disassemble and separate the A and B blasting components of the blasting package, remove the damaged blasting disc from the A blasting component and replace it with a new blasting disc to be tested, then tighten the A and B blasting components of the blasting package again, and repeat the process in Step 4.
[0018] Step 6: End the test: Turn off the medium booster pump, remove the high-pressure hose, rupture pack, and pressure gauge, and empty the medium filling the medium booster pump.
[0019] Furthermore, in step 4, the rupture pressure of the rupture disc is estimated. During the test, the pressure can be increased rapidly in the initial stage and the pressure increase rate can be reduced in the final stage. This allows for a more accurate determination of the peak pressure of the rupture disc at the moment of breakage.
[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The blasting pack of the present invention is a detachable connection type, which facilitates the installation and replacement of blasting discs.
[0021] 2. The testing device of the present invention changes the pressurizing medium from air to water, making full use of the compressibility of water, and can compress water from normal pressure to hundreds of atmospheres in a short time, thus shortening the pressurization time.
[0022] 3. The testing device of this invention offers significantly improved safety. When a rupture disc is ruptured by high-pressure gas at hundreds of atmospheres, the instantaneous release of high-pressure air from the rupture point generates a strong shock wave and a large amount of high-pressure gas, posing a significant safety threat to personnel and property at the testing site. However, the high-pressure water in this invention can instantly depressurize after the rupture disc ruptures, flowing at atmospheric pressure, thus preventing high-pressure air rupture shock wave injuries. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the connection structure of a rupture pressure testing device for a rupture disc in a high-pressure air rupture cylinder according to the present invention; Figure 2 This is a schematic diagram of the structure of the A-type explosive component of the explosive pack of the present invention; Figure 3 This is a schematic diagram of the structure of the B explosive component of the explosive pack of the present invention; The reference numerals in the attached drawings include: 1. Medium booster pump; 2. High-pressure hose; 3. Pressure gauge; 4. Bursting pack; 5. Pressure display; 6. Bursting disc; 7. A rupture component; 71. Open end; 8. Regular cavity; 9. B rupture component; 91. First external threaded interface end; 10. Pressure measurement interface end; 11. Second external threaded interface end. Detailed Implementation
[0024] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0025] Combination Figures 1 to 3 As shown, the present invention provides a rupture pressure testing device for a rupture disc in a high-pressure air rupture cylinder, comprising a medium booster pump 1, a high-pressure hose 2, a pressure gauge 3, and a rupture chamber 4. The medium booster pump 1 and the rupture chamber 4 are connected via the high-pressure hose 2. The rupture chamber 4 consists of two detachably connected components, with a rupture disc 6 installed between the two components. The two components are connected and the rupture disc 6 is provided at the connection point between the two components. The two components are connected by threads to form an integral rupture chamber 4. The pressure gauge 3 is connected to one component of the rupture chamber 4.
[0026] Specifically, the medium booster pump 1 is electric or manual, and the internal medium is an incompressible liquid. Preferably, water is used as an example. The output end of the medium booster pump 1 is connected to one end of the high-pressure hose 2. The connection between the output end of the medium booster pump 1 and one end of the high-pressure hose 2 is made by thread, snap or other secure connection. Preferably, threaded connection is used as an example.
[0027] Specifically, the medium booster pump 1 is equipped with a pressure display 5, which can display the output pressure of the medium booster pump 1 in real time.
[0028] Specifically, the high-pressure hose 2 is a multi-layer steel wire braided hose that can withstand pressures of hundreds of atmospheres.
[0029] Specifically, the two components constituting the blasting package 4 are blasting component A 7 and blasting component B 9. Blasting component A 7 includes an open end 71 and a regular cavity 8 with a certain depth. The open end 71 is connected to and communicates with the regular cavity 8. An installation groove is provided on the inner wall of the regular cavity 8 located at the point of communication with the open end 71, and a blasting disc 6 is installed in the installation groove. The inner diameter of the open end 71 is smaller than the inner diameter of the regular cavity 8 and the diameter of the tested blasting disc 6. Threads are also provided on the inner wall of the regular cavity 8. Blasting component B 9 is a three-way structure and has three interface ends, namely the first... The device comprises an external threaded interface 91, a pressure measuring interface 10, and a second external threaded interface 11. The thread on the first external threaded interface 91 has the same pitch as the thread on the inner wall of the regular cavity 8, and the first external threaded interface 91 and the regular cavity 8 can be reliably and tightly connected by threads. The pressure measuring interface 10 is tightly connected to the pressure gauge 3, and the connection between the pressure measuring interface 10 and the pressure gauge 3 is by thread or other secure connection methods. Preferably, the present invention uses a threaded connection as an example. The second external threaded interface 11 is tightly connected to the other end of the high-pressure hose 2.
[0030] Specifically, the cross-sectional shape of the regular cavity 8 is consistent with the shape of the tested rupture disc 6; Specifically, the pressure gauge 3 can be mechanical or electronic display type.
[0031] In addition, such as Figures 1 to 3 As shown, this invention utilizes the aforementioned device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder, and also provides a method for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder, the specific method including the following steps: Step 1: Inject water into medium booster pump 1: Inject sufficient water into the water storage container of medium booster pump 1.
[0032] Step 2, Assembly of the blasting package 4: Install the test blasting disc 6 into the regular cavity 8 of the A blasting component 7, then tightly thread the first external threaded interface end 91 of the B blasting component 9 to the regular cavity 8 of the A blasting component 7, and finally install the pressure gauge 3 on the pressure measurement interface end 10 of the B blasting component 9.
[0033] Step 3, Assembly of the rupture pressure testing device for the rupture disc 6: Securely connect the second external threaded interface 11 of the B rupture component 9 to the high-pressure hose 2, and then securely connect the high-pressure hose 2 to the output end of the medium booster pump 1.
[0034] Step 4, Rupture pressure test of rupture disc 6: Turn on the medium booster pump 1 to pressurize the pipeline system. When the rupture disc 6 ruptures, stop the medium booster pump 1 and record the peak pressure of the pressure gauge 3 on the B rupture component 9, which is the rupture pressure of the rupture disc 6.
[0035] Step 5, Repeat the test: Disassemble and separate the A blasting component 7 and B blasting component 9 of the blasting pack 4, remove the damaged blasting disc 6 inside the A blasting component 7 and replace it with a new blasting disc 6 to be tested, re-tighten the A blasting component 7 and B blasting component 9 of the blasting pack 4, and repeat the procedure in step 4.
[0036] Step 6, End the test: Turn off the medium booster pump 1, remove the high-pressure hose 2, the bursting pack 4, and the pressure gauge 3, and empty the medium filling the medium booster pump 1.
[0037] Specifically, in step 4, the rupture pressure of the rupture disc 6 is estimated. During the test, the pressure can be increased rapidly in the initial stage and the pressure increase rate can be reduced in the final stage. This allows for a more accurate determination of the peak pressure of the rupture disc 6 at the moment of rupture.
[0038] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.
Claims
1. A device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder, characterized in that: The device includes a medium booster pump, a high-pressure hose, a pressure gauge, and a rupture pack. The medium booster pump and the rupture pack are connected via the high-pressure hose. The rupture pack consists of two detachably connected components that are connected to each other. A rupture disc is installed at the connection point between the two components, and the two components are connected by threads to form a complete rupture pack. The pressure gauge is connected to one component of the rupture pack.
2. The device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder according to claim 1, characterized in that: The blasting package consists of two components, blasting component A and blasting component B. Blasting component A includes an open end and a regular cavity of a certain depth. The open end is connected to and communicates with the regular cavity. An installation groove is provided on the inner wall of the regular cavity at the point of communication with the open end, and a rupture disc is installed in the installation groove. The inner diameter of the open end is smaller than the inner diameter of the regular cavity and the diameter of the rupture disc being tested. Threads are also provided on the inner wall of the regular cavity. Blasting component B has a three-way structure and three interface ends: a first external threaded interface end, a pressure measurement interface end, and a second external threaded interface end. The thread on the first external threaded interface end has the same pitch as the thread on the inner wall of the regular cavity, and the first external threaded interface end can reliably and tightly connect to the regular cavity. The pressure measurement interface end is tightly connected to a pressure gauge, and the connection between the pressure measurement interface end and the pressure gauge is by thread or other secure connection method. The second external threaded interface end is tightly connected to a high-pressure hose.
3. The device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder according to claim 2, characterized in that: The cross-sectional shape of the regular cavity is consistent with the shape of the tested rupture disc.
4. The device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder according to claim 1, characterized in that: The medium booster pump is electric or manual, and the internal medium is an incompressible liquid; the output end of the medium booster pump is connected to the high-pressure hose; the connection between the output end of the medium booster pump and the high-pressure hose is a threaded or snap-fit connection.
5. The device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder according to claim 1, characterized in that: The medium booster pump is equipped with a pressure display, which can display the output pressure of the medium booster pump in real time.
6. The device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder according to claim 1, wherein the high-pressure hose is a multi-layer steel wire braided hose capable of withstanding pressures of hundreds of atmospheres.
7. The device for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder according to claim 1, characterized in that: The pressure gauge can be mechanical or electronic.
8. A method for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder, characterized in that: The test is achieved using the high-pressure air rupture cylinder rupture disc fracture pressure testing device as described in claim 2, and the specific testing method includes the following steps: Step 1: Inject water into the medium booster pump: Inject sufficient water into the water storage container of the medium booster pump; Step 2, Assembly of the rupture package: Install the test rupture disc into the regular cavity of rupture component A, then tightly thread the first external threaded interface end of rupture component B to the regular cavity of rupture component A, and finally install the pressure gauge on the pressure measurement interface end of rupture component B. Step 3, Assembly of the rupture disc bursting pressure testing device: Securely connect the second external threaded interface end of the B rupture component to the high-pressure hose, and then securely connect the high-pressure hose to the output end of the medium booster pump; Step 4, Rupture disc rupture pressure test: Turn on the medium booster pump to pressurize the pipeline system. When the rupture disc ruptures, stop the medium booster pump and record the peak pressure of the pressure gauge on the B rupture component, which is the rupture disc rupture pressure. Step 5, Repeat the test: Disassemble and separate the A and B blasting components of the blasting package, remove the damaged blasting disc inside the A blasting component and replace it with a new blasting disc to be tested, then tighten the A and B blasting components of the blasting package again, and repeat the process in Step 4. Step 6: End the test: Turn off the medium booster pump, remove the high-pressure hose, rupture pack, and pressure gauge, and empty the medium filling the medium booster pump.
9. A method for testing the rupture pressure of a rupture disc in a high-pressure air rupture cylinder according to claim 8, characterized in that: In step 4, the rupture pressure of the rupture disc is estimated. During the test, the pressure can be increased rapidly in the initial stage and the pressure increase rate can be reduced in the final stage. This allows for a more accurate determination of the peak pressure of the rupture disc at the moment of breakage.