Pressure storage type explosion suppression device

Abstract

The utility model relates to a pressure storage type explosion suppression device which comprises a base and a pressure storage container, the pressure storage container is fixedly connected to the base, a first through hole is formed in the base, one end of the first through hole is communicated with an opening of the pressure storage container, the pressure storage type explosion suppression device further comprises a rupture disk, a clamping device and a triggering mechanism, and the rupture disk is arranged at the other end of the first through hole. The clamping device tightly presses the rupture disk on the base and enables the rupture disk to seal the first through hole, the clamping device is further provided with a second through hole aligned with the first through hole, the triggering mechanism comprises a sleeve, a firing pin and a gas generator, the sleeve is fixedly installed on the base, the firing pin is movably arranged in the sleeve, and the gas generator is arranged on the base. The sleeve is provided with a first through hole, the inner side end of the firing pin can stretch into the first through hole, the sleeve is further provided with a stop part, the gas generator is connected with the sleeve, gas generated by the gas generator can enter the sleeve and push the firing pin to move towards the rupture disk, and the firing pin stops moving and can collide with the rupture disk when moving to abut against the stop part.

Description

Technical Field

[0001] This utility model relates to the field of explosion suppression technology, specifically to a pressure-suppressed explosion suppression device. Background Technology

[0002] Industries such as manufacturing, trade, and new energy that involve flammable and explosive materials pose a risk of dust and gas explosions, causing significant harm to nearby personnel or critical equipment and potentially resulting in injury or damage. Currently, the triggering methods for explosion suppression devices in domestic and international technologies mainly fall into the following categories:

[0003] 1. Detonator + rupture disc type: This device has a detonator installed on the outside of the rupture disc. The detonator is used to rupture the rupture disc to release the suppressant. This technology has been phased out by the market due to safety issues.

[0004] 2. Gas generator type + sealing diaphragm type: This device works similarly to a car airbag. The gas cylinder is normally maintained at atmospheric pressure. The gas generator is built into the cylinder. When the gas generator receives a signal, it immediately starts and generates a large amount of high-pressure gas into the cylinder, breaking the sealing diaphragm and driving the explosion suppressant to be released rapidly. The advantage of this type of explosion suppressor is that it does not store pressure under normal conditions, making it relatively safe; the disadvantage is that it takes a relatively long time for the gas cylinder to go from atmospheric pressure to high-pressure gas.

[0005] 3. Electric-actuated pusher + tilting valve plate type: This device uses a constant pressure system, storing a certain pressure of gas in the original gas cylinder. The explosion suppressant is mixed with the high-pressure gas in the explosion suppressant cylinder. A valve plate separates the cylinder from the pipeline or the protected equipment. When the electric-actuated pusher receives a signal, it immediately pushes open the knife holder at the valve plate and instantly opens the valve plate, allowing the high-pressure gas and explosion suppressant to be released rapidly. However, this device also has certain drawbacks: for example, there is a certain amount of time between the electric-actuated pusher receiving the signal and the valve plate fully opening, making it difficult to achieve rapid opening; and over time, the aging of the seals inside the valve plate can cause the explosion suppressant cylinder to lose pressure, affecting the subsequent suppression driving effect.

[0006] Therefore, to meet the requirements of explosion safety, an explosion suppression device with good sealing effect and fast opening speed is needed. Utility Model Content

[0007] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a pressure-storage explosion suppression device with good sealing effect and fast opening speed.

[0008] To achieve the above objectives, this utility model provides a pressure-storage type explosion suppression device, including a base and a pressure storage container. The pressure storage container is fixedly connected to the base, and the base has a first through hole with one end connected to the opening of the pressure storage container. It also includes a rupture disc, a clamp, and a triggering mechanism. The rupture disc is disposed at the other end of the first through hole. The clamp presses the rupture disc tightly against the base and seals the first through hole. The clamp also has a second through hole aligned with the first through hole. The triggering mechanism includes a sleeve, a firing pin, and a gas generator. The sleeve is fixedly installed on the base, and the firing pin is movably disposed within the sleeve, with its inner end extending into the first through hole. The sleeve also has a stop portion. The gas generator is connected to the sleeve, and the gas generated by the gas generator can enter the sleeve and push the firing pin towards the rupture disc. When the firing pin moves to the stop portion, it stops moving and impacts the rupture disc.

[0009] Furthermore, it also includes a one-way valve mounted on the base, the one-way valve being connected to the first through hole.

[0010] Furthermore, it also includes a pressure sensor mounted on the base and capable of detecting the air pressure inside the first through hole.

[0011] Furthermore, it also includes a relief valve installed on the base and connected to the first through hole.

[0012] Furthermore, the pressure storage container is a steel cylinder.

[0013] Furthermore, the pressure storage container has a pressure resistance of 10 MPa, the rupture disc has a pressure resistance of 8 MPa, and the pressure relief valve has a pressure resistance of 9 MPa.

[0014] Furthermore, the clamp is fastened to the base using multiple connecting bolts, and the multiple connecting bolts are evenly arranged circumferentially around the central axis of the first through hole.

[0015] Furthermore, the sleeve of the triggering mechanism is provided with an exhaust hole that communicates with its inner hole, and the exhaust hole is connected to the first through hole. The firing pin is fitted with a sealing ring that contacts the inner wall of the sleeve. When the firing pin moves to abut against the stop part, the sealing ring is located inside the exhaust hole. The firing pin can move outward until the sealing ring is located outside the exhaust hole.

[0016] Furthermore, the inner bore of the sleeve includes a first inner bore and a second inner bore that are coaxial and connected. The radius of the first inner bore is larger than that of the second inner bore, and the stepped surface between the first inner bore and the second inner bore forms a stop portion. The vent hole is located in the second inner bore. The impact pin includes a first pin segment and a second pin segment. The first pin segment is located in the first inner bore, and a sealing ring is fitted on the first pin segment. The second pin segment passes through the second inner bore, and the inner end of the second pin segment is used to impact the rupture disc.

[0017] As described above, the pressure-suppressed explosion suppression device of this utility model has the following beneficial effects:

[0018] 1. The sealing method using rupture discs and clamps offers advantages over existing tilt valve structures, including better sealing and faster opening speed. Furthermore, the triggering mechanism, consisting of a gas generator and a striker, rapidly generates high-pressure gas, which drives the striker to strike the rupture disc quickly and efficiently. This allows the pressure-suppressed explosion suppression device to start operating quickly, ensuring safety, stability, and reliability.

[0019] 2. The firing pin of the triggering mechanism can be stably stopped when it breaks the rupture disc, preventing it from coming out. In addition, the vent hole can prevent excessive pressure inside the casing, making the triggering mechanism work more stably and reliably.

[0020] 3. It can monitor the pressure value stored in the cylinder at any time through a pressure sensor and ensure safety through a relief valve. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the pressure-suppressed explosion suppression device in this utility model.

[0022] Figure 2 This is a schematic diagram of the triggering mechanism in this utility model.

[0023] Figure 3 This is a schematic diagram of the external structure of the pressure-suppressing explosion suppression device in this utility model.

[0024] Figure 4 for Figure 3 A bottom view.

[0025] Explanation of icon numbers

[0026] 1. Base

[0027] 11 First through hole

[0028] 2. Pressure storage container

[0029] 3 Explosive fragments

[0030] 4. Clamping device

[0031] 41 Second through hole

[0032] 5. Triggering Mechanism

[0033] 51 casing

[0034] 511 First Inner Hole

[0035] 512 Second Inner Hole

[0036] 513 Stop section

[0037] 514 Exhaust port

[0038] 52 firing pins

[0039] 521 First stitch

[0040] 522 Second stitch segment

[0041] 53 Gas Generator

[0042] 54 Sealing ring

[0043] 6. Check valve

[0044] 7. Pressure sensor

[0045] 8. Explosion relief valve

[0046] 9 Junction Box

[0047] 10 Connecting bolts Detailed Implementation

[0048] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0049] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0050] See Figures 1 to 4This utility model provides a pressure-suppressed explosion suppression device, including a base 1 and a pressure storage container 2. The pressure storage container 2 is fixedly connected to the base 1, and the base 1 has a first through hole 11 with one end connected to the opening of the pressure storage container 2. It also includes a rupture disc 3, a clamp 4, and a triggering mechanism 5. The rupture disc 3 is located at the other end of the first through hole 11. The clamp 4 presses the rupture disc 3 tightly onto the base 1 and seals the first through hole 11. The clamp 4 also has a second through hole 41 aligned with the first through hole 11. The firing mechanism 5 includes a sleeve 51, a firing pin 52, and a gas generator 23. The sleeve 51 is fixedly installed on the base 1. The firing pin 52 is movably disposed inside the sleeve 51, and the inner end of the firing pin 52 can extend into the first through hole 11. The sleeve 51 is also provided with a stop part 513. The gas generator 23 is connected to the sleeve 51. The gas generated by the gas generator 23 can enter the sleeve 51 and push the firing pin 52 toward the rupture disc 3. When the firing pin 52 moves to abut against the stop part 513, it stops moving and can strike the rupture disc 3.

[0051] The main working principle of the pressure-storage explosion suppression device involved in this utility model is as follows: the pressure storage container 2 is filled with high-pressure gas and a targeted explosion suppressant. The high-pressure gas is generally an inert gas or nitrogen, which drives the explosion suppressant and inertizes it. The triggering mechanism 5 is used to break the rupture disc 3 to trigger the operation of the pressure-storage explosion suppression device. The sleeve 51 and the base 1, as well as the striker 52 and the sleeve 51, are sealed to prevent the high-pressure gas in the pressure storage container 2 from leaking out through the triggering mechanism 5. The gas generator 23 adopts an existing mature design structure, which can quickly generate high-pressure gas after receiving an electrical signal. Its specific structure and principle will not be described in detail. Under normal conditions, the rupture disc 3 keeps the first through hole 11 blocked, and the striker 52 of the triggering mechanism 5 is in the retracted state. When the gas generator 23 of the triggering mechanism 5 receives a signal, it instantly triggers and releases high-temperature, high-pressure gas. The explosive impact force drives the firing pin 52 to move at high speed towards the inside of the first through hole 11 and impact the rupture disc 3. At the same time, the firing pin 52 will contact the stop part 513 and stop, preventing it from flying out with the explosion suppressant. After the rupture disc 3 is opened by the impact, it breaks. The mixture of high-pressure gas and explosion suppressant in the pressure storage container 2 is quickly ejected from the first through hole 11 and the second through hole 41, further tearing the rupture disc 3, so that the high-pressure gas and explosion suppressant are quickly ejected from the rupture of the rupture disc 3. This utility model uses the triggering mechanism 5 to drive the firing pin 52 to quickly impact the rupture disc 3, realizing the rapid triggering of the pressure-storage explosion suppressor. The opening speed is fast, and compared with the method of electric actuator pusher + flip valve plate, the method of clamping the rupture disc 3 to the base 1 by the clamp 4 has a better sealing effect and is stable and reliable.

[0052] See Figures 1 to 4 The present invention will be further described below with reference to a specific embodiment:

[0053] In this embodiment, see Figure 1 and Figure 3 As a preferred design, the pressure-suppressed explosion suppression device also includes a one-way valve 6, a pressure sensor 7, and a relief valve 8. The one-way valve 6 is mounted on the base 1 and connected to the first through hole 11. It can be used to fill the high-pressure gas in the pressure storage container 2, and can also be used to install the pressure sensor 7, preventing leakage from the pressure storage container 2. The pressure sensor 7 is used to detect the gas pressure in the first through hole 11. It can be directly mounted on the base 1 via the one-way valve 6, or directly mounted on the base 1. By setting the pressure sensor 7 on the side of the base 1, the pressure value stored in the pressure storage container 2 can be monitored at any time. The relief valve 8 is mounted on the one-way valve 6 and connected to the first through hole 11 to prevent excessive pressure in the pressure storage container 2, thus providing installation protection. In this embodiment, as a preferred design, a junction box 9 is also installed on the base 1 to facilitate the wiring of the pressure sensor 7 and the gas generator 23.

[0054] In this embodiment, see Figure 1 As a preferred design, the pressure storage container 2 is a steel cylinder, which is fixedly connected to the base 1 via a threaded connection, and an O-ring or other sealing structure can be installed between the two to achieve a stable seal. The steel cylinder is filled with 6MPa gas and a targeted explosion suppressant. The pressure resistance of the steel cylinder is preferably 10MPa, the pressure resistance of the rupture disc 3 is preferably 8MPa, and the pressure resistance of the explosion relief valve 8 is preferably 9MPa.

[0055] In this embodiment, see Figure 1 As a preferred design, the clamp 4 is an annular plate structure with the first through hole 11 and the second through hole 41 coaxially arranged. The clamp 4 and the base 1 are fastened together by multiple connecting bolts 10, and the multiple connecting bolts 10 are evenly arranged circumferentially around the central axis of the first through hole 11, thereby achieving a stable connection between the clamp 4 and the base 1, and stably pressing the circular rupture disc 3 onto the base 1. The contact pressure between the rupture disc 3 and the clamp 4, and between the rupture disc 3 and the base 1, is large, uniform and stable, which can ensure the sealing effect.

[0056] In this embodiment, see Figure 1 and Figure 2As a preferred design, the sleeve 51 of the triggering mechanism 5 is provided with an exhaust hole 514 that communicates with its inner hole, and the exhaust hole 514 is connected to the first through hole 11. The firing pin 52 is fitted with a sealing ring 54 that contacts the inner wall of the sleeve 51. The sealing ring 54 moves synchronously with the firing pin 52. When the firing pin 52 moves to abut against the stop part 513, the sealing ring 54 is located inside the exhaust hole 514, that is, the sealing ring 54 is located between the inner end of the firing pin 52 and the exhaust hole 514. The firing pin 52 can move outward until the sealing ring 54 is located outside the exhaust hole 514, that is, the exhaust hole 514 is located between the inner end of the firing pin 52 and the sealing ring 54. With this design, when the gas generator 23 is not triggered to generate gas, the striker 52 is in a retracted state. At this time, the sealing ring 54 seals the striker 52 and the inner hole of the sleeve 51 between the outer end of the striker 52 and the vent hole 514. Even if the high-pressure gas in the pressure storage container 2 enters the sleeve 51, it will exit through the vent hole 514 and return to the first through hole 11, and will not leak out from the triggering mechanism 5. When the gas generator 23 generates gas and pushes the striker 52 to move to the stop part 513 at the outer end of the striker 52, the sealing ring 54 is located inside the vent hole 514. The residual high-pressure gas generated by the gas generator 23 at the outer end of the striker 52 in the sleeve 51 will be discharged through the vent hole 514 and depressurized into the pressure storage container 2, preventing the striker 52 from being pushed out due to excessive pressure in the sleeve 51.

[0057] In this embodiment, more preferably, see [reference needed]. Figure 2 The inner bore of the sleeve 51 includes a coaxial and connected first inner bore 511 and a second inner bore 512. The first inner bore 511 is located outside the second inner bore 512, and the radius of the first inner bore 511 is larger than that of the second inner bore 512. The stepped surface between the first inner bore 511 and the second inner bore 512 forms a stop portion 513. An exhaust port 514 is provided at the second inner bore 512. The firing pin 52 includes a first pin segment 521 and a second pin segment 522. The first pin segment 521 is located in the first inner bore 511, and a sealing ring 54 is fitted on the first pin segment 521. The second pin segment 522 passes through the second inner bore 512, and the two are clearance-fitted. The inner end of the second pin segment 522 is used to impact the rupture disc 3. In this way, the axial movement of the firing pin 52 can be well stabilized, and the firing pin 52 can be stably stopped to prevent it from falling out.

[0058] As can be seen from the above, the pressure-suppressing explosion suppression device of this utility model has the following beneficial effects:

[0059] 1. The sealing method using rupture disc 3 and clamp 4 has advantages over the existing flip valve structure, including better sealing effect and faster opening speed. Furthermore, the triggering mechanism 5, composed of gas generator 23 and impact pin 52, rapidly generates high-pressure gas and pushes the impact pin 52 to quickly strike the rupture disc 3, which can quickly and efficiently break the rupture disc 3, thereby enabling the pressure-suppressed explosion suppression device to start working quickly, safely, stably and reliably.

[0060] 2. The firing pin 52 of the triggering mechanism 5 can be stably stopped when it breaks the rupture disc 3 to prevent it from coming out. In addition, the vent hole 514 can prevent the pressure inside the sleeve 51 from being too high, making the triggering mechanism 5 work more stably and reliably.

[0061] 3. The pressure sensor 7 can monitor the pressure value stored in the cylinder at any time, and the explosion relief valve 8 can ensure safety.

[0062] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0063] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pressure storage explosion suppression device, comprising a base (1) and a pressure storage container (2), the pressure storage container (2) being fixedly connected to the base (1), and the base (1) being provided with a first through hole (11) having one end in communication with an opening of the pressure storage container (2), characterized in that: The device further comprises a rupture disc (3) arranged at the other end of the first through hole (11), a holder (4) for pressing the rupture disc (3) against the base (1) and sealing the first through hole (11), the holder (4) being provided with a second through hole (41) aligned with the first through hole (11), and a trigger mechanism (5) comprising a sleeve (51) fixedly arranged on the base (1), a striker (52) movably arranged in the sleeve (51) and capable of extending into the first through hole (11), and a gas generator (53) connected to the sleeve (51) and capable of generating gas to push the striker (52) to move towards the rupture disc (3), the striker (52) stopping moving when it abuts against a stop portion (513) of the sleeve (51) and capable of impacting the rupture disc (3).

2. The pressure storage explosion suppression device according to claim 1, characterized in that: The device further comprises a one-way valve (6) arranged on the base (1) and connected to the first through hole (11).

3. The pressure storage explosion suppression device according to claim 1, characterized in that: The device further comprises a pressure sensor (7) arranged on the base (1) and capable of detecting the pressure in the first through hole (11).

4. The pressure storage explosion suppression device according to claim 1, characterized in that: The device further comprises a pressure relief valve (8) arranged on the base (1) and connected to the first through hole (11).

5. The stored pressure explosion suppression device of claim 4, wherein: The pressure storage container (2) is a steel cylinder.

6. The stored pressure explosion suppression device of claim 4 or 5, wherein: The pressure storage container (2) has a pressure resistance of 10 MPa, the rupture disc (3) has a pressure resistance of 8 MPa, and the pressure relief valve (8) has a pressure resistance of 9 MPa.

7. The pressure storage explosion suppression device according to claim 1, characterized in that: The holder (4) is fastened to the base (1) by a plurality of connecting bolts (10) arranged uniformly around the central axis of the first through hole (11).

8. The pressure storage explosion suppression device according to claim 1, characterized in that: The sleeve (51) of the trigger mechanism (5) is provided with an exhaust hole (514) connected to the inner hole of the sleeve (51) and connected to the first through hole (11), the striker (52) is provided with a sealing ring (54) in contact with the inner wall of the sleeve (51), the sealing ring (54) is located inside the exhaust hole (514) when the striker (52) abuts against the stop portion (513), and the striker (52) can move outwardly so that the sealing ring (54) is located outside the exhaust hole (514).

9. The stored energy explosion suppression device of claim 8, wherein: The inner hole of the sleeve (51) comprises coaxial and connected first inner hole (511) and second inner hole (512), the first inner hole (511) has larger radius than the second inner hole (512), and the step surface between the first inner hole (511) and the second inner hole (512) constitutes a stop part (513), the exhaust hole (514) is arranged at the second inner hole (512), the firing pin (52) comprises first needle segment (521) and second needle segment (522), the first needle segment (521) is located in the first inner hole (511), and the sealing ring (54) is sleeved on the first needle segment (521), the second needle segment (522) passes through the second inner hole (512), and the inner side end of the second needle segment (522) is used for impacting the bursting disc (3).

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