阅读说明：本技术 一种泄爆顶机构及使用方法 (Explosion venting top mechanism and using method thereof ) 是由 周伟 吕洪 陈树飞 于 2020-06-05 设计创作，主要内容包括：本发明涉及一种泄爆顶机构,包括定位套、定位基架、泄爆顶盖、泄爆驱动机构、复位驱动机构及驱动电路,定位基架嵌于定位套内,定位基架为上均布若干泄爆口,且每个泄爆口上端面均设一个泄爆顶盖,泄爆顶盖上端面通过至少一个泄爆驱动机构与定位套外表面连接,通过至少一个复位驱动机构与定位套侧壁内表面连接,驱动电路与定位套外侧面连接。其用方法包括设备预制,被动泄爆及自主泄爆等三个功能步骤。本发明一方面泄爆顶便于快速释放内部压力并采用轻质泄爆面,保护集装箱侧壁免遭爆破的破坏,减轻爆破对附近的操作人员带来的危害程度；另一方面具有良好的监控能力及信息反馈能力,有效的提高泄爆响应迅速,提高泄爆效率和可靠性。(The invention relates to an explosion venting top mechanism which comprises a positioning sleeve, a positioning base frame, an explosion venting top cover, an explosion venting driving mechanism, a reset driving mechanism and a driving circuit, wherein the positioning base frame is embedded in the positioning sleeve, the positioning base frame is provided with a plurality of explosion venting ports uniformly, the upper end surface of each explosion venting port is provided with one explosion venting top cover, the upper end surface of each explosion venting top cover is connected with the outer surface of the positioning sleeve through at least one explosion venting driving mechanism and is connected with the inner surface of the side wall of the positioning sleeve through at least one reset driving mechanism, and the driving circuit is connected with the outer side surface of the positioning sleeve. The method comprises three functional steps of equipment prefabrication, passive explosion venting, automatic explosion venting and the like. On one hand, the explosion venting top is convenient for quickly releasing internal pressure, and a light explosion venting surface is adopted, so that the side wall of the container is protected from being damaged by explosion, and the damage degree of the explosion to nearby operators is reduced; on the other hand, the explosion venting device has good monitoring capability and information feedback capability, effectively improves explosion venting response speed, and improves explosion venting efficiency and reliability.)

1. The utility model provides a let out and explode a mechanism which characterized in that: the explosion venting top mechanism comprises a positioning sleeve, a positioning base frame, an explosion venting top cover, an explosion venting driving mechanism, a reset driving mechanism, a combustible gas concentration sensor and a driving circuit, wherein the positioning sleeve is of a cylindrical frame-shaped metal structure with a rectangular cross section, the positioning base frame is of a frame structure which is coaxially distributed with the positioning sleeve and is embedded in the positioning sleeve, a plurality of explosion venting ports are uniformly distributed on the positioning base frame, the explosion venting ports are symmetrically distributed on two sides of the central line of the positioning base frame, the number of the explosion venting top covers is consistent with that of the explosion venting ports, the upper end surface of each explosion venting port is provided with an explosion venting top cover, the side surface of each explosion venting top cover is hinged with the inner side of the positioning sleeve through a hinge and covers the upper end surface of each explosion venting port, the upper end surface of each explosion venting top cover is connected with the outer surface of the positioning sleeve through at least one explosion venting driving mechanism and, and the lower end face of the explosion venting top cover and the upper end face of the positioning sleeve form an included angle of 0-90 degrees, when the lower end face of the explosion venting top cover and the upper end face of the positioning sleeve form an included angle of 0 degree, the explosion venting top cover and the explosion venting port are coaxially distributed, the combustible gas concentration sensor is connected with the side face of the positioning base frame, and the driving circuit is connected with the outer side face of the positioning sleeve and is respectively electrically connected with each explosion venting driving mechanism and the combustible gas concentration sensor.

2. The explosion venting mechanism of claim 1, wherein: the explosion venting driving mechanism comprises a lifting driving mechanism, a guide sleeve, a main connecting rod, a pressure spring and an inclination angle sensor, wherein the side surface of the lifting driving mechanism is connected with the outer surface of the guide sleeve and is distributed in parallel with the axial line of the guide sleeve, the upper end surface of the lifting driving mechanism is vertically connected with the lower end surface of the guide sleeve, the guide sleeve is of a metal structure with a rectangular frame-shaped cross section, the axial line of the guide sleeve is distributed in parallel with the upper end surface of the guide sleeve, the rear end surface of the main connecting rod is embedded in the guide sleeve and is hinged with the inner surface of the side wall of the guide sleeve, the front end surface of the main connecting rod is hinged with the upper end surface of an explosion venting top cover, the distance between the front end surface of the main connecting rod and the connection intersection point of the explosion venting top cover and the rear end surface of the explosion top cover is not less than 1/3 of the length of the explosion venting top cover, the axial, the front end face is positioned on the guide sleeve and connected with the upper end face of the main connecting rod, the axis of the pressure spring and the axis of the main connecting rod form an included angle of 0-75 degrees, the tilt angle sensor is connected with the lower end face of the main connecting rod and positioned at the midpoint position of the main connecting rod, and the lifting driving mechanism and the tilt angle sensor are electrically connected with the driving circuit.

3. The explosion venting mechanism of claim 2, wherein: the lifting driving mechanism is any one of an eccentric wheel mechanism, an electric telescopic rod mechanism, a motor driving gear rack mechanism and an electromagnetic telescopic rod mechanism which are driven by a motor.

4. The explosion venting mechanism of claim 1, wherein: the reset driving mechanism comprises a traction spring, a guide rod and a guide sleeve, wherein the guide rod is connected with the lower end face of the explosion venting top cover through the guide sleeve and is distributed in parallel with the lower end face of the explosion venting top cover, two ends of the guide rod are respectively connected and hinged with the lower end face of the explosion venting top cover and the inner surface of the side wall of the positioning sleeve through the traction spring, the total length of the traction spring is 1/3-2/3 of the length of the guide rod, and the distance between the intersection point of the traction spring and the explosion venting top cover and the rear end face of the explosion venting top cover is not less than 1/3 of the length of the.

5. The explosion venting mechanism of claim 1, wherein: when the explosion venting driving mechanisms connected with the explosion venting top cover are two or more, the explosion venting driving mechanisms are uniformly distributed along the axis direction of the positioning sleeve, and a reset driving mechanism is arranged between every two adjacent explosion venting driving mechanisms.

6. The explosion venting mechanism of claim 1, wherein: the terminal surface establishes the constant head tank that the cross section is "Jiong" font under the position sleeve, the position groove degree of depth is 10% -60% of position sleeve height, the elastic sealing strip of at least one fire retardance is all established to position tank bottom and lateral wall, and establishes 4 at least high strength locating pins on the position tank cell wall that the position sleeve lateral surface corresponds, the high strength locating pin encircles the position sleeve axial equipartition, and its axis and position sleeve lateral surface vertical distribution.

7. The explosion venting mechanism of claim 1, wherein: the explosion venting top cover comprises a top cover body, a positioning sleeve, a positioning base frame and a top cover, wherein the top cover body is provided with a positioning sleeve, the positioning sleeve is provided with a positioning base frame, the positioning sleeve is provided with a positioning sleeve, the positioning sleeve is provided with a positioning hole, the positioning sleeve is provided with a positioning sleeve hole, the positioning sleeve hole is provided with a flame-retardant elastic sealing ring, the positioning sleeve hole is provided with a positioning sleeve hole, the positioning.

8. The explosion venting mechanism of claim 1, wherein: the upper end face of the positioning pedestal is 0-10 mm lower than the upper end face of the positioning sleeve, the lower end face of the positioning pedestal is positioned in the positioning sleeve, the distance between the lower end face of the positioning sleeve and the upper end face of the positioning sleeve is not smaller than 10 mm, flame-retardant elastic sealing gaskets are arranged on the upper end face and the lower end face of the positioning pedestal, and the height of an explosion venting port of the positioning pedestal is not smaller than 1 cm.

9. The explosion venting mechanism of claim 1, wherein: position sleeve, location bed frame all adopt the metal texture frame, it all includes stereoplasm layer, stereoplasm inner liner and elasticity heat preservation lining to let out and explode the top cap, wherein the stereoplasm layer cladding is outside the stereoplasm inner liner, and connects through the gusset between stereoplasm layer, the stereoplasm inner liner to constitute thickness not less than 3 millimeters, whole weight is no longer than and is less than the gusset connection

10. The use method of the explosion venting top mechanism is characterized in that: the use method of the explosion venting mechanism comprises the following steps:

s1, prefabricating equipment, namely designing and preparing the structure of a corresponding positioning sleeve and explosion venting top covers and the number of the explosion venting top covers according to the structure and the volume of the bearing box body equipment, assembling the positioning sleeve, the positioning base frame, the explosion venting top covers, an explosion venting driving mechanism, a reset driving mechanism, a combustible gas concentration sensor and a driving circuit, covering all the explosion venting top covers outside an explosion venting port to obtain a finished product explosion venting mechanism, covering the assembled explosion venting mechanism on the upper end surface of the high-pressure bearing box body equipment through a positioning groove on the lower end surface of the positioning sleeve, and establishing electrical and data communication connection between the driving circuit and an external monitoring and management system; finally, on one hand, an active explosion venting control critical value is recorded into the driving circuit, the national standard of the critical value is specified to be 0.6-2% of the hydrogen content, and on the other hand, the maximum value of the elasticity between a pressure spring and a main connecting rod in the explosion venting driving mechanism is adjusted to be 1.2-1 times of the critical value, so that the prefabrication of the equipment can be completed;

and S2, independently venting, wherein in the running process of the bearing box body equipment, the combustible gas concentration sensor continuously detects the gas concentration in the bearing box body equipment, when the combustible gas concentration sensor of the venting and explosion top cover detects that the gas concentration is increased to the critical value set in the step S1, the driving circuit directly drives the lifting driving mechanism of the venting and explosion driving mechanism to run, the lifting driving mechanism drives the main connecting rod to open the corresponding venting and explosion top cover to realize the purposes of pressure relief and explosion venting, and the venting and explosion top cover is reset under the common driving of the venting and explosion driving mechanism and the reset driving mechanism after hydraulic pressure is finished and carries out sealing protection on the venting and explosion port.

And S3, passively venting and exploding, wherein in the running process of the bearing box body equipment, when the combustible gas concentration sensor of the venting and exploding top cover detects that the concentration is increased and the combustible gas concentration sensor explodes, the impact pressure generated exceeds the elasticity of a pressure spring in the venting and exploding driving mechanism set in the step S1, the venting and exploding top cover is opened under the driving of the gas impact pressure, and the internal pressure is rapidly released and vented and exploded.

Technical Field

The invention relates to an explosion venting top device, in particular to an explosion venting top mechanism applied to a container and a using method thereof.

Background

With the progress of the times and the development of technologies, the application of containers in flammable and explosive scenes is increasing day by day. For example, in the field of rapidly developed hydrogen energy, the container is widely applied to bearing electrolytic hydrogen production equipment, a hydrogen compressor, a skid-mounted hydrogen station, a hydrogen storage bottle (group) and the like. Due to the characteristics of easy leakage, flammability and explosiveness of hydrogen, when the container type box body is adopted to arrange the hydrogen-related equipment, the upper space of the box body is well ventilated for the sake of safety. The top internal surface should level and smooth, avoids the dead angle, or establishes and forces the air exit, ensures not detain in the box and gathers hydrogen, should set up hydrogen concentration transfinites alarm device outside easily gathering hydrogen department, and container formula box top will adopt to let out explodes and arrange and explode the mechanism, avoids in case when exploding the inside pressure increase in the twinkling of an eye of box to lead to the box diversified disintegration, causes secondary disaster, brews serious personnel's injury.

When the existing container is applied to inflammable and explosive occasions, an explosion-proof fan is usually arranged in a closed box body, and inflammable and explosive gas is prevented from accumulating in the box body through forced air exhaust and air exchange, so that explosion is prevented; or the ventilation openings are designed around the box body, and natural convection ventilation is carried out inside and outside the box body, so that the aim of preventing flammable and explosive gas from accumulating in the box body and preventing explosion is fulfilled. However, the designs adopt active explosion-proof measures, and potential hazards brought by lack of explosion venting designs of the box body when the box body is subjected to explosion due to accidents in the box body are not considered.

Therefore, in view of the current situation, there is an urgent need to develop a new explosion venting mechanism and a using method thereof, which can effectively and rapidly release the impact force generated by explosion through the top of the container when the container is accidentally exploded, so as to protect the side wall of the container from being damaged by the explosion and reduce the degree of harm brought to nearby operators by the explosion.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a brand-new explosion venting device applied to a container top cover, so as to overcome the defects of the traditional equipment in operation and improve the stability, safety and reliability of the equipment in operation. In order to achieve the purpose, the invention is realized by the following technical scheme:

an explosion venting top mechanism comprises a positioning sleeve, a positioning base frame, an explosion venting top cover, an explosion venting driving mechanism, a reset driving mechanism, a combustible gas concentration sensor and a driving circuit, wherein the positioning sleeve is of a cylindrical frame-shaped metal structure with a rectangular cross section, the positioning base frame is of a frame structure which is coaxially distributed with the positioning sleeve and is embedded in the positioning sleeve, a plurality of explosion venting ports are uniformly distributed on the positioning base frame, the explosion venting ports are symmetrically distributed on two sides of the central line of the positioning base frame, the number of the explosion venting top covers is consistent with the number of the explosion venting ports, an explosion venting top cover is arranged on the upper end face of each explosion venting port, the side surface of each explosion venting top cover is hinged with the inner side of the positioning sleeve through a hinge and covers the upper end face of each explosion venting port, the upper end face of each explosion venting top cover is connected with the outer surface of the positioning sleeve through at least one explosion venting driving mechanism and connected with the inner surface of the side wall of the, when the lower end face of the explosion venting top cover and the upper end face of the positioning sleeve form an angle of 0 degree, the explosion venting top cover and the explosion venting port are coaxially distributed, the combustible gas concentration sensors are respectively connected with the side faces of the positioning base frames, and the driving circuit is connected with the outer side face of the positioning sleeve and is respectively electrically connected with the explosion venting driving mechanism and the combustible gas concentration sensors.

Furthermore, the explosion venting driving mechanism comprises a lifting driving mechanism, a guide sleeve, a main connecting rod, a pressure spring and an inclination angle sensor, wherein the side surface of the lifting driving mechanism is connected with the outer surface of the positioning sleeve and is distributed in parallel with the axis of the positioning sleeve, the upper end surface of the lifting driving mechanism is vertically connected with the lower end surface of the guide sleeve, the guide sleeve is of a metal structure with a rectangular frame-shaped cross section, the axis of the guide sleeve is distributed in parallel with the upper end surface of the positioning sleeve, the rear end surface of the main connecting rod is embedded in the guide sleeve and is hinged with the inner surface of the side wall of the guide sleeve, the front end surface of the main connecting rod is hinged with the upper end surface of the explosion venting top cover, the distance between the front end surface of the main connecting rod and the connection intersection point of the explosion venting top cover and the rear end surface of the explosion top cover is not less than 1/3 of the length of the explosion venting top cover, the axis of the main connecting, the front end face is positioned on the guide sleeve and connected with the upper end face of the main connecting rod, the axis of the pressure spring and the axis of the main connecting rod form an included angle of 0-75 degrees, the tilt angle sensor is connected with the lower end face of the main connecting rod and positioned at the midpoint position of the main connecting rod, and the lifting driving mechanism and the tilt angle sensor are electrically connected with the driving circuit.

Furthermore, the lifting driving mechanism is any one of an eccentric wheel mechanism, an electric telescopic rod mechanism, a motor driving gear rack mechanism and an electromagnetic telescopic rod mechanism which are driven by a motor.

Furthermore, the reset driving mechanism comprises a traction spring, a guide rod and a guide sleeve, wherein the guide rod is connected with the lower end face of the explosion venting top cover through the guide sleeve and is distributed in parallel with the lower end face of the explosion venting top cover, two ends of the guide rod are respectively connected and hinged with the lower end face of the explosion venting top cover and the inner surface of the side wall of the positioning sleeve through the traction spring, the total length of the traction spring is 1/3-2/3 of the length of the guide rod, and the distance between the intersection point of the traction spring and the explosion venting top cover and the rear end face of the explosion venting top cover is not less than 1/3 of the length of the explosion venting.

Furthermore, when the explosion venting driving mechanisms connected with the explosion venting top cover are two or more, the explosion venting driving mechanisms are uniformly distributed along the axis direction of the positioning sleeve, and a reset driving mechanism is arranged between every two adjacent explosion venting driving mechanisms.

Further, the terminal surface is established the constant head tank that the cross section is "Jiong" font under the position sleeve, the position tank degree of depth is 10% -60% of position sleeve height, at least one fire resistance bullet type sealing strip is all established to position tank bottom and lateral wall, and establishes 4 at least high strength locating pins on the constant head tank cell wall that the position sleeve lateral surface corresponds, the high strength locating pin encircles the position sleeve axial equipartition, and its axis and position sleeve lateral surface vertical distribution.

Furthermore, the upper end face of the explosion venting top cover and the lower end face of the explosion venting top cover are inclined when closed, when the included angle between the upper end face of the explosion venting top cover and the included angle between the lower end face of the explosion venting top cover is larger than 0 degree, the thickness of the explosion venting top cover is gradually increased from the outer side of the positioning sleeve to the central position, and the lower end face and the side surface of the explosion venting top cover are both provided with flame-retardant elastic sealing rings and are respectively connected with the side surface of the positioning sleeve and the upper end face of the positioning base frame through the flame-retardant elastic sealing rings.

Furthermore, the upper end face of the positioning pedestal is lower than the upper end face of the positioning sleeve by 0-10 mm, the lower end face of the positioning pedestal is positioned in the positioning sleeve and has a distance of not less than 10 mm with the lower end face of the positioning sleeve, flame-retardant elastic sealing gaskets are arranged on the upper end face and the lower end face of the positioning pedestal, and the height of an explosion venting port of the positioning pedestal is not less than 1 cm.

Further, position sleeve, location bed frame all adopt the metal texture frame, it all includes stereoplasm layer, stereoplasm inner liner and elasticity heat preservation lining to let out and explode the top cap, wherein the cladding of stereoplasm layer is outside the stereoplasm inner liner, and connects through the gusset between stereoplasm layer, the stereoplasm inner liner to constitute thickness not less than 3 millimeters, whole weight is no longer than being more than and whole weight is no longer than and the gusset is connectedThe heat preservation chamber of, elasticity heat preservation lining inlays in the heat preservation intracavity to offset with stereoplasm restrictive coating, stereoplasm inner liner surface respectively, wherein stereoplasm layer, stereoplasm inner liner all adopt light in weight's light material and elasticity heat preservation lining to adopt fire resistance material.

A use method of the explosion venting mechanism comprises the following steps:

s1, prefabricating equipment, namely designing and preparing the structure of a corresponding positioning sleeve and an explosion venting top cover and the number of the explosion venting top covers according to the structure and the volume of high-pressure bearing box equipment, assembling the positioning sleeve, a positioning base frame, the explosion venting top cover, an explosion venting driving mechanism, a reset driving mechanism, a combustible gas concentration sensor and a driving circuit, covering all the explosion venting top covers outside an explosion venting port to obtain a finished product explosion venting mechanism, covering the assembled explosion venting mechanism on the upper end surface of the high-pressure bearing box equipment through a positioning groove on the lower end surface of the positioning sleeve, and establishing electrical and data communication connection between the driving circuit and an external monitoring and management system; finally, on one hand, an active explosion venting control critical value is recorded into the driving circuit, the national standard of the critical value is specified to be 0.6-2% of the hydrogen content, and on the other hand, the maximum value of the elasticity between a pressure spring and a main connecting rod in the explosion venting driving mechanism is adjusted to be 1.2-1 times of the critical value, so that the prefabrication of the equipment can be completed;

and S2, independently venting, wherein in the running process of the bearing box body equipment, the combustible gas sensor continuously detects the gas concentration in the bearing box body equipment, when the combustible gas concentration sensor of the venting top cover detects that the concentration is increased to the critical value set in the step S1, the driving circuit directly drives the lifting driving mechanism of the venting and explosion driving mechanism to run, the lifting driving mechanism drives the main connecting rod to open the corresponding venting and explosion top cover to realize the purposes of pressure relief and explosion relief, and the venting and explosion top cover is reset under the driving of the venting and explosion driving mechanism and the reset driving mechanism after hydraulic pressure is completed and carries out sealing protection on the venting and explosion port.

And S3, passively venting and exploding, wherein in the running process of the bearing box body equipment, when the combustible gas concentration sensor of the venting and exploding top cover detects that the concentration is increased and the combustible gas concentration sensor explodes, the impact pressure generated exceeds the elasticity of a pressure spring in the venting and exploding driving mechanism set in the step S1, the venting and exploding top cover is opened under the driving of the gas impact pressure, and the internal pressure is rapidly released and vented and exploded.

The explosion venting device has the advantages of simple structure, flexible and convenient use and good universality, can be used in the field of non-closed and closed environments, and can also be used in dangerous and explosive environments; on the other hand has good monitoring ability and information feedback ability, explosion venting response is rapid in effectual improvement, when improving explosion venting efficiency and reliability, effectual realized initiatively step down and to explosion venting process whole journey control, when improving explosion venting efficiency, in time discover equipment operation trouble hidden danger, thereby very big improvement let out reliability and the security of exploding the operation, in addition the pressure-bearing, compressive capacity is good, effectively solve the tradition and let out the insecurity that explodes the mechanism and adopt fixing bolt as drawing the hawser, and can carry out effectual buffering to the impact force when letting out the explosion, thereby very big improvement let out the security of exploding the operation, reliability and stability.

Drawings

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional partial structure of the present invention;

FIG. 3 is a schematic structural view of an explosion venting driving mechanism;

FIG. 4 is a schematic structural view of a reset driving mechanism;

FIG. 5 is a partial structural view of the positioning sleeve and the positioning base frame;

FIG. 6 is a flow chart illustrating a method of using the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by taking hydrogen as an example in combination with the specific implementation mode.

As shown in fig. 1-5, an explosion venting top mechanism comprises a positioning sleeve 1, a positioning base frame 2, an explosion venting top cover 3, an explosion venting driving mechanism 4, a reset driving mechanism 5, a combustible gas concentration sensor 6 and a driving circuit 7, wherein the positioning sleeve 1 is a cylindrical frame-shaped metal structure with a rectangular cross section, the positioning base frame 2 is a frame structure which is coaxially distributed with the positioning sleeve 1 and is embedded in the positioning sleeve 1, the positioning base frame 2 is provided with a plurality of explosion venting ports 8 uniformly distributed on the upper part, the explosion venting ports 8 are symmetrically distributed on two sides of the central line of the positioning base frame 2, the number of the explosion venting top covers 3 is consistent with the number of the explosion venting ports 8, the upper end surface of each explosion venting port 8 is provided with an explosion venting top cover 3, the side surface of the explosion venting top cover 3 is hinged with the inner side of the positioning sleeve 1 through a hinge and covers the upper end surface of the explosion venting port 8, the upper end surface of the explosion venting top cover 3 is connected with the outer surface of the positioning sleeve 1 through, the lower end face of the explosion venting top cover 3 and the upper end face of the positioning sleeve 1 form an included angle of 0-90 degrees, when the lower end face of the explosion venting top cover 3 and the upper end face of the positioning sleeve form 0 degree, the explosion venting top cover 3 and the explosion venting port 8 are coaxially distributed, the combustible gas concentration sensor 6 is respectively connected with the side face of each positioning base frame 2, and the driving circuit 7 is connected with the outer side face of the positioning sleeve 1 and is respectively electrically connected with each explosion venting driving mechanism 4 and the combustible gas concentration sensor 6.

It is emphasized that the explosion venting driving mechanism 4 comprises a lifting driving mechanism 41, a guide sleeve 42, a main connecting rod 43, a pressure spring 44 and an inclination angle sensor 45, the side surface of the lifting driving mechanism 41 is connected with the outer surface of the positioning sleeve 1 and is distributed in parallel with the axial line of the positioning sleeve 1, the upper end surface of the lifting driving mechanism 41 is vertically connected with the lower end surface of the guide sleeve 42, the guide sleeve 42 has a rectangular frame-shaped cross section, the axial line of the guide sleeve 42 is distributed in parallel with the upper end surface of the positioning sleeve 1, the rear end surface of the main connecting rod 43 is embedded in the guide sleeve 42 and is hinged with the inner surface of the side wall of the guide sleeve 42, the front end surface is hinged with the upper end surface of the explosion venting top cover 3, the distance between the front end surface of the main connecting rod 43 and the explosion venting top cover 3 is not less than 1/3 of the length of the explosion venting top cover 3, and the axial line of the main connecting rod 43, the rear end face of at least one of the pressure springs 44 is embedded in the guide sleeve 42 and connected with the top of the guide sleeve 42, the front end face of the pressure spring 44 is positioned on the guide sleeve 42 and connected with the upper end face of the main connecting rod 43, the axis of the pressure spring 44 and the axis of the main connecting rod 43 form an included angle of 0-75 degrees, the inclination angle sensor 45 is connected with the lower end face of the main connecting rod 43 and positioned at the midpoint of the main connecting rod 43, and the lifting driving mechanism 41 and the inclination angle sensor 45 are both electrically connected with the driving circuit 7.

Preferably, the lifting driving mechanism 41 is any one of an eccentric wheel mechanism, an electric telescopic rod mechanism, a motor-driven gear rack mechanism and an electromagnetic telescopic rod mechanism driven by a motor.

Meanwhile, the reset driving mechanism 5 comprises a traction spring 51, a guide rod 52 and a guide sleeve 42, wherein the guide rod 52 is connected with the lower end face of the explosion venting top cover 3 through the guide sleeve 42 and is distributed in parallel with the lower end face of the explosion venting top cover 3, two ends of the guide rod 52 are respectively connected and hinged with the lower end face of the explosion venting top cover 3 and the inner surface of the side wall of the positioning sleeve 1 through the traction spring 51, the total length of the traction spring 51 is 1/3-2/3 of the length of the guide rod 52, and the distance between the intersection point of the traction spring 51 and the explosion venting top cover 3 and the rear end face of the explosion venting top cover 3 is not less than 1/3 of the length of the.

In addition, when the explosion venting driving mechanisms 4 connected with the explosion venting top cover 3 are two or more, the explosion venting driving mechanisms 4 are uniformly distributed along the axial direction of the positioning sleeve 1, and a reset driving mechanism 5 is arranged between every two adjacent explosion venting driving mechanisms 4.

It needs to be further explained that the lower end face of the positioning sleeve 1 is provided with a positioning groove 101 with a cross section in the shape of Jiong, the depth of the positioning groove 101 is 10% -60% of the height of the positioning sleeve 1, the bottom and the side wall of the positioning groove 101 are both provided with at least one flame-retardant elastic sealing strip 102, at least 4 high-strength positioning pins 103 are arranged on the groove wall of the positioning groove 101 corresponding to the outer side face of the positioning sleeve 1, the high-strength positioning pins 103 are uniformly distributed around the axis of the positioning sleeve 1, and the axis of the high-strength positioning pins is perpendicular to the.

Simultaneously, let out and explode the top cap 3 up end and let out and explode the top cap 3 down terminal surface when closed and have the inclination, and when letting out and explode the top cap 3 up end and let out and explode the top cap 3 down terminal surface contained angle and be greater than 0, let out and explode the top cap 3 thickness and increase step by step from the lateral center position of position sleeve 1 outside, let out and explode top cap 3 down terminal surface and side surface and all set up fire-retardant type bullet type sealing ring 9 to be connected with position sleeve 1 side surface and position bed frame 2 up end respectively through fire-retardant type elastic sealing ring 9.

Further preferably, the upper end face of the positioning pedestal 2 is lower than the upper end face of the positioning sleeve 1 by 0-10 mm, the lower end face is positioned in the positioning sleeve 1 and has a distance with the lower end face of the positioning sleeve 1 which is not smaller than 10 mm, the upper end face and the lower end face of the positioning pedestal 2 are both provided with flame-retardant elastic sealing gaskets 10, and the height of the explosion venting port 8 of the positioning pedestal 2 is not less than 1 cm.

In particular, the locating sleeve 1 and the locating base frame 2 are all made of metal ground frames to ensure the strength of the frame, and the explosion venting top cover 3 includes a hard layer 111, a hard inner liner layer 112 and an elastic heat preservation liner layer 113, wherein the hard layer 111 is covered outside the hard inner liner layer 112, the hard layer 111 and the hard inner liner layer 112 are connected through a rib plate 114, a heat preservation cavity 115 with the thickness not less than 3 mm is formed, and the whole weight is not more than 3 mmThe elastic heat-insulating lining layer 113 is embedded in the heat-insulating cavity 115 and is respectively abutted to the surfaces of the hard sheath layer 111 and the hard lining layer 112, and the hard layer 111 and the hard lining layer 112 are both made of light materials with light weight and the elastic heat-insulating lining layer 115 is made of flame-retardant materials.

In particular, the explosion venting top covers 3 are fixed by more than two flame-retardant different-shaped sealing strips 12, one side of each explosion venting cover is riveted or bonded with the corresponding explosion venting cover, and the other side of each explosion venting cover is sealed with the corresponding explosion venting cover due to the fact that the sealing strips are provided with convex grooves, so that water leakage and dust are prevented.

In addition, the driving circuit is a circuit system based on an industrial single chip microcomputer, and the electric elements and the sensor of the driving circuit are all of an explosion-proof structure

As shown in fig. 6, a method for using a venting mechanism includes the following steps:

s1, prefabricating equipment, namely designing and preparing the structure of a corresponding positioning sleeve and an explosion venting top cover and the number of the explosion venting top covers according to the structure and the volume of the bearing box body equipment, assembling the positioning sleeve, the positioning base frame, the explosion venting top cover, an explosion venting driving mechanism, a reset driving mechanism, an air pressure sensor, a hydrogen concentration sensor and a driving circuit, covering all the explosion venting top covers outside an explosion venting port to obtain a finished product explosion venting mechanism, covering the assembled explosion venting mechanism on the upper end face of the high-pressure hydrogen bearing box body equipment through a positioning groove on the lower end face of the positioning sleeve, and establishing electrical and data communication connection between the driving circuit and an external monitoring and management system; finally, on one hand, an active explosion venting control critical value is recorded into the driving circuit, the national standard of the critical value is specified to be 0.6-2% of the hydrogen content, and on the other hand, the maximum value of the elasticity between a pressure spring and a main connecting rod in the explosion venting driving mechanism is adjusted to be 1.2-1 times of the critical value, so that the prefabrication of the equipment can be completed;

and S2, independently venting, wherein in the running process of the bearing box body equipment, the combustible gas sensor continuously detects the gas concentration in the bearing box body equipment, when the combustible gas concentration sensor of the venting top cover detects that the concentration is increased to the critical value set in the step S1, the driving circuit directly drives the lifting driving mechanism of the venting and explosion driving mechanism to run, the lifting driving mechanism drives the main connecting rod to open the corresponding venting and explosion top cover to realize the purposes of pressure relief and explosion relief, and the venting and explosion top cover is reset under the driving of the venting and explosion driving mechanism and the reset driving mechanism after hydraulic pressure is completed and carries out sealing protection on the venting and explosion port.

And S3, passively venting and exploding, wherein in the running process of the bearing box body equipment, when the combustible gas concentration sensor of the venting and exploding top cover detects that the concentration rises and the explosion occurs and the impact pressure exceeds the elasticity of the pressure spring in the venting and exploding driving mechanism set in the step S1, the venting and exploding top cover is opened under the driving of the gas impact pressure to realize the rapid release of the internal pressure for venting and exploding, and the venting and exploding top cover is reset under the driving of the resetting driving mechanism after the venting and the exploding opening is sealed and protected.

The explosion venting device has the advantages of simple structure, flexible and convenient use and good universality, can be used in the field of non-closed and closed environments, and can also be used in dangerous and explosive environments; on the other hand has good monitoring ability and information feedback ability, explosion venting response is rapid in effectual improvement, when improving explosion venting efficiency and reliability, effectual realized initiatively step down and to explosion venting process whole journey control, when improving explosion venting efficiency, in time discover equipment operation trouble hidden danger, thereby very big improvement let out reliability and the security of exploding the operation, in addition the pressure-bearing, compressive capacity is good, effectively solve the tradition and let out the insecurity that explodes the mechanism and adopt fixing bolt as drawing the hawser, and can carry out effectual buffering to the impact force when letting out the explosion, thereby very big improvement let out the security of exploding the operation, reliability and stability.

It will be appreciated by persons skilled in the art that the present invention is not limited by the embodiments described above. The foregoing embodiments and description have been presented only to illustrate the principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention. Such variations and modifications are intended to be within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.