An integrated quick-opening blind plate

Abstract

The present invention relates to the technical field of pipelines or pressure vessels, and in particular to an integrated quick-opening blind plate, comprising: a barrel flange, which is arranged on a pipeline or a pressure vessel, and the barrel flange comprises: an annular groove, a locking groove and a sealing groove; an end cover, which is detachably arranged in the annular groove; a sealing ring, which is arranged in the sealing groove; a locking block, which is arranged in the locking groove; a safety locking device, comprising: a base, which is fixedly arranged on the end cover, a locking assembly, which presses or releases the locking block; a safety assembly, which limits the locking assembly from releasing the locking block when the pressure in the pipeline or the pressure vessel is relatively large; a locking assembly connected to the locking block, and when the blind plate is in an open state, the safety locking device and the locking block are both on the end cover. In the present invention, the operation is simple, and the locking assembly is connected to the locking block, and when the blind plate is in an open state, the safety locking device and the locking block are both on the end cover, forming a whole, thereby avoiding the disassembly and assembly of parts resulting in clutter on site and loss of parts, and increasing production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum and chemical pressure pipelines or pressure vessels, and in particular to an integrated quick-opening blind plate. Background Art

[0002] In the petroleum and chemical industry, oil and gas are usually transported and stored in pipelines or containers. Blind plates that need to be opened and closed are often used on oil and gas transmission pipelines or pressure vessels. To ensure safety, pressure relief bolts or safety alarm bolts are usually provided on the blind plates to prevent high pressure inside the pipeline or pressure vessel, which may cause safety hazards to personnel or equipment when the blind plates are opened.

[0003] The operation process of opening and closing the blind plate in the prior art is generally complicated, and the pressure relief bolt or the safety alarm bolt and the locking device need to be disassembled in whole or in part when opening the blind plate, resulting in a messy site and easy loss of parts, which affects production efficiency.

[0004] In view of the existence of the above-mentioned problems, the designer, based on many years of rich practical experience and professional knowledge in the engineering application of such products, and in conjunction with the application of theory, actively carried out research and innovation, in order to create an integrated quick-opening blind plate to make it more practical. Summary of the invention

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: an integrated quick-opening blind plate, comprising:

[0006] Cylinder flange, the cylinder flange is arranged on a pipeline or a pressure vessel, the cylinder flange is a through structure and communicates with the inside of the pipeline or the pressure vessel, and the cylinder flange includes:

[0007] an annular groove, the annular groove is arranged on the inner wall of the cylinder flange,

[0008] A locking groove, wherein the locking groove is arranged at one end of the annular groove away from the pipeline or the pressure vessel,

[0009] A sealing groove, the sealing groove being arranged at one end of the annular groove close to the pipeline or the pressure vessel;

[0010] An end cover, the end cover is detachably disposed in the annular groove;

[0011] A sealing ring, the sealing ring is arranged in the sealing groove;

[0012] A locking block, which is disposed in the locking groove to lock the end cover;

[0013] A safety locking device, the safety locking device comprising:

[0014] A base, wherein the base is fixedly arranged on the end cover,

[0015] A locking assembly, which is disposed on the base and tightens or loosens the locking block;

[0016] A safety component, which is arranged on the base and restricts the locking component from releasing the locking block when the pressure in the pipeline or the pressure vessel is relatively high;

[0017] The locking assembly is connected to the locking block, and when the blind plate is in an open state, the safety locking device and the locking block are both located on the end cover.

[0018] Furthermore, a first cavity is provided inside the base;

[0019] The locking assembly comprises:

[0020] A locking tube, one end of which is disposed in the first cavity, and the other end of which is located outside the first cavity and extends in a direction away from the pipeline or the pressure vessel, and the locking tube rotates with its extension direction as the axis;

[0021] A movable tube, which is arranged at one end of the base away from the pipeline or the pressure vessel, is located outside the locking tube, and slides along the extending direction of the locking tube;

[0022] A power-assisting hole, which is arranged at one end of the locking tube away from the pipeline or the pressure vessel, and is arranged perpendicular to the extending direction of the locking tube;

[0023] A booster rod, the booster rod is used to be inserted into the booster hole, so as to rotate the locking tube;

[0024] A push rod, one end of which is fixedly connected to the locking block, and the other end of which is rotatably connected to the outer wall of the movable tube;

[0025] A limiting structure is provided on the locking tube and the movable tube. When the locking tube rotates, the limiting structure limits the sliding of the movable tube so as to press the locking block into the locking groove. When the movable tube slides in the extending direction of the locking tube, the push rod pulls the locking block so that the locking block disengages from the locking groove.

[0026] Furthermore, the limiting structure includes:

[0027] A first limiting block, wherein there are at least two first limiting blocks fixedly disposed on the inner wall of the movable tube, and a sliding groove is provided between at least two first limiting blocks;

[0028] second limit blocks, the number of the second limit blocks is equal to that of the first limit blocks, and the second limit blocks are fixedly arranged on the outer wall of the locking tube;

[0029] When the second limit block rotates to the sliding groove along with the locking tube, the movable tube slides along the extending direction of the locking tube;

[0030] When the second limiting block rotates to the position of the first limiting block along with the locking tube, the first limiting block cooperates with the second limiting block to limit the sliding of the movable tube.

[0031] Furthermore, one end of the first limit block away from the pipeline or pressure vessel is two inclined surfaces, the distance between the edge where the two inclined surfaces meet and the pipeline or pressure vessel is greater than the distance between the other two ends of the two inclined surfaces and the pipeline or pressure vessel, and a protrusion is provided on any of the inclined surfaces.

[0032] Furthermore, the end cover is provided with a through hole at the position of the first cavity.

[0033] The safety components include:

[0034] A safety valve, one end of which is disposed inside the locking tube, and the other end of which is disposed inside the through hole, a second cavity is disposed inside the safety valve, and the second cavity is communicated with the inside of the pipeline or the pressure vessel;

[0035] A valve stem, one end of which is disposed in the second cavity and slides along an end away from the pipeline or the pressure vessel;

[0036] A safety tube, wherein the safety tube is disposed in the locking tube, and one end of the safety tube is fixedly connected to the other end of the valve stem disposed in the second cavity, and the safety tube slides along the inner wall of the locking tube in the extending direction of the locking tube;

[0037] When the pressure in the pipeline or pressure vessel is high, the pressure in the second chamber is high, the valve stem is forced to drive the safety tube to slide away from the pipeline or pressure vessel, and the other end of the safety tube connected to the valve stem moves to the position of the power-assisting hole, thereby limiting the insertion of the power-assisting rod into the power-assisting hole.

[0038] Furthermore, the second cavity and the valve stem are provided with matching conical surfaces, the area of ​​the conical surface at one end close to the pipeline or pressure vessel is larger than that at the end away from the pipeline or pressure vessel, and the valve stem is provided with a sealing ring on the conical surface.

[0039] Furthermore, the locking tube is provided with a plug at one end away from the pipeline or the pressure vessel.

[0040] Furthermore, the push rod is of two-section type, and the two sections of the push rod are rotatably connected. A baffle is provided on the end cover, and the baffle is used to limit the movement of the locking block in a direction away from the pipeline or the pressure vessel.

[0041] Furthermore, there are at least two locking blocks, and at least two of the locking blocks are arranged at equal intervals.

[0042] Furthermore, a handle is provided on the end cover.

[0043] The beneficial effects of the present invention are as follows: the present invention arranges a cylinder flange, an end cover, a sealing ring, a locking block and a safety locking device; the safety locking device includes a locking assembly and a safety assembly, which can simultaneously lock the locking block and serve as a safety alarm for the blind plate; the operation is simple; and the locking assembly is connected to the locking block; when the blind plate is in an open state, the safety locking device and the locking block are both on the end cover as a whole, thereby avoiding disassembly and assembly of parts that would cause clutter on site and loss of parts, and increasing production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 It is a structural schematic diagram of the present invention;

[0046] Figure 2 This is a schematic diagram of the structure after the movable tube is hidden;

[0047] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0048] Figure 4 It is a front view of the present invention;

[0049] Figure 5 for Figure 4 The cross-sectional view obtained by cutting along BB;

[0050] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0051] Figure 7 for Figure 5 A partial enlarged view of point D in the middle;

[0052] Figure 8 It is a cross-sectional view of the present invention when the pressure in the pipeline or pressure vessel is relatively small;

[0053] Fig. 9 It is a cross-sectional view of the present invention when the pressure in the pipeline or pressure vessel is relatively high.

[0054] : Illustrations: 1. Cylinder flange; 11. Annular groove; 12. Locking groove; 13. Sealing groove; 2. End cover; 21. Baffle; 22. Handle; 3. Locking block; 4. Safety locking device; 41. Base; 42. Locking assembly; 421. Locking tube; 422. Movable tube; 423. Power-assisting hole; 424. Power-assisting rod; 425. Push rod; 426. Limiting structure; 4261. First limiting block; 4262. Second limiting block; 43. Safety assembly; 431. Safety valve; 432. Valve stem; 433. Safety tube; 434. Plug. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0056] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] like Figures 1 to 9 As shown, an integrated quick-opening blind plate comprises:

[0059] Cylinder flange 1, which is arranged on a pipeline or a pressure vessel, is a through structure and communicates with the inside of the pipeline or the pressure vessel, and includes:

[0060] The annular groove 11 is provided on the inner wall of the cylinder flange 1.

[0061] The locking groove 12 is arranged at one end of the annular groove 11 away from the pipeline or the pressure vessel.

[0062] A sealing groove 13, the sealing groove 13 is arranged at one end of the annular groove 11 close to the pipeline or the pressure vessel;

[0063] The end cover 2 is detachably disposed in the annular groove 11;

[0064] A sealing ring, which is arranged in the sealing groove 13;

[0065] A locking block 3, which is disposed in the locking groove 12 to lock the end cover 2;

[0066] Safety locking device 4, the safety locking device 4 comprises:

[0067] The base 41 is fixedly arranged on the end cover 2.

[0068] A locking assembly 42, which is disposed on the base 41 and is used to tighten or loosen the locking block 3;

[0069] A safety component 43 is disposed on the base 41 and restricts the locking component 42 from loosening the locking block 3 when the pressure in the pipeline or the pressure vessel is relatively high;

[0070] The locking assembly 42 is connected to the locking block 3 . When the blind plate is in the open state, the safety locking device 4 and the locking block 3 are both on the end cover 2 .

[0071] By arranging the cylinder flange 1, the end cover 2, the sealing ring, the locking block 3 and the safety locking device 4, the safety locking device 4 includes a locking component 42 and a safety component 43, which can lock the locking block 3 and act as a safety alarm for the blind plate at the same time, and the operation is simple. The locking component 42 is connected to the locking block 3. When the blind plate is in the open state, the safety locking device 4 and the locking block 3 are both on the end cover 2 as a whole, thereby avoiding disassembly and assembly of parts resulting in clutter on site and loss of parts, thereby increasing production efficiency.

[0072] As a preferred embodiment of the above, a first cavity is provided inside the base 41; the locking assembly 42 includes:

[0073] A locking tube 421, one end of which is disposed in the first cavity, and the other end of which is located outside the first cavity and extends in a direction away from the pipeline or the pressure vessel. The locking tube 421 rotates with its extension direction as the axis;

[0074] A movable tube 422, which is disposed at one end of the base 41 away from the pipeline or the pressure vessel, and is located outside the locking tube 421 and slides along the extending direction of the locking tube 421;

[0075] A power-assisting hole 423, which is disposed at one end of the locking tube 421 away from the pipeline or the pressure vessel, and the power-assisting hole 423 is disposed perpendicular to the extending direction of the locking tube 421;

[0076] A boost rod 424, the boost rod 424 is used to be inserted into the boost hole 423, so as to rotate the locking tube 421;

[0077] A push rod 425, one end of which is fixedly connected to the locking block 3, and the other end of which is rotatably connected to the outer wall of the movable tube 422;

[0078] A limiting structure 426 is provided on the locking tube 421 and the movable tube 422. When the locking tube 421 rotates, the limiting structure 426 limits the sliding of the movable tube 422 so as to press the locking block 3 into the locking groove 12; when the movable tube 422 slides in the extension direction of the locking tube 421, the push rod 425 pulls the locking block 3 so that the locking block 3 disengages from the locking groove 12.

[0079] By providing a locking tube 421, a movable tube 422, a power-assisting hole 423, a power-assisting rod 424 and a push rod 425, the locking assembly 42 is arranged on the base 41, and the locking of the locking block 3 is simple and convenient. It only needs to insert the power-assisting rod 424 into the power-assisting hole 423 and rotate the locking tube 421 to a locked state, so that the displacement of the movable tube 422 can be limited, thereby pressing the locking block 3 into the locking groove 12 through the push rod 425. When the blind plate needs to be opened, the locking tube 421 is rotated to a position where the movable tube 422 can move, and the movable tube 422 is slid in the extension direction of the locking tube 421, thereby pulling the push rod 425, and the push rod 425 pulls the locking block 3, thereby disengaging the locking block 3 from the locking groove 12. The operation is simple and convenient, which improves the efficiency of opening the blind plate, saves time, and increases the practicality and convenience of the present invention.

[0080] As a preferred embodiment of the above, the limiting structure 426 includes:

[0081] A first limiting block 4261, at least two of which are fixedly disposed on the inner wall of the movable tube 422, and a sliding groove is formed between at least two first limiting blocks 4261;

[0082] The second limiting blocks 4262 are equal in number to the first limiting blocks 4261 , and the second limiting blocks 4262 are fixedly disposed on the outer wall of the locking tube 421 ;

[0083] When the second limit block 4262 rotates to the sliding groove along with the locking tube 421, the movable tube 422 slides along the extending direction of the locking tube 421;

[0084] When the second limiting block 4262 rotates to the position of the first limiting block 4261 along with the locking tube 421 , the first limiting block 4261 cooperates with the second limiting block 4262 to limit the sliding of the movable tube 422 .

[0085] By setting the first limit block 4261 and the second limit block 4262, the two cooperate with each other, and there is a sliding groove between the first limit block 4261. When the second limit block 4262 rotates to the sliding groove with the locking tube 421, the second limit block 4262 is located between the first limit block 4261, and the second limit block 4262 will not limit the sliding of the movable tube 422. At this time, the movable tube 422 can slide along the extension direction of the locking tube 421. When the second limit block 4262 rotates to the position of the first limit block 4261 with the locking tube 421, the second limit block 4262 will limit the movement of the first limit block 4261, thereby preventing the movable tube 422 from sliding and fixing the locking block 3 in the locking groove 12. The structure is simple and reliable, and the operation is convenient, which increases the practicality and reliability of the present invention.

[0086] As a preferred embodiment of the above, the end of the first limit block 4261 away from the pipeline or pressure vessel has two inclined surfaces, the distance between the intersection edge of the two inclined surfaces and the pipeline or pressure vessel is greater than the distance between the other two ends of the two inclined surfaces and the pipeline or pressure vessel, and a protrusion is provided on any inclined surface.

[0087] By setting one end of the first limit block 4261 away from the pipeline or pressure vessel as two inclined surfaces, when the second limit block 4262 rotates with the locking tube 421, the inclined surfaces help to guide the rotation of the second limit block 4262, and a protrusion is set on any inclined surface, which limits the second limit block 4262 to prevent the second limit block 4262 from excessively rotating and rotating to the sliding groove position. The distance between the edge where the two inclined surfaces meet and the pipeline or pressure vessel is greater than the distance between the two ends of the two inclined surface collars, so that when the second limit block 4262 rotates along the inclined surface past the edge and is restricted by the protrusion at the other inclined surface, due to the height difference of the edges, the second limit block 4262 will not be offset, thereby maintaining the limiting effect on the first limit block 4261, so that the locking assembly 42 can keep locking the locking block 3, thereby increasing the practicality and reliability of the present invention.

[0088] As a preferred embodiment of the above, the end cover 2 is provided with a through hole at the first cavity position, and the safety component 43 includes:

[0089] A safety valve 431, one end of the safety valve 431 is arranged inside the locking tube 421, and the other end is arranged in the through hole. A second cavity is arranged inside the safety valve 431, and the second cavity is communicated with the pipeline or the pressure container;

[0090] A valve stem 432, one end of which is disposed in the second cavity and slides along an end away from the pipeline or the pressure vessel;

[0091] A safety tube 433, which is disposed in the locking tube 421, and one end of which is fixedly connected to the other end of the valve stem 432 disposed in the second cavity, and the safety tube 433 slides along the inner wall of the locking tube 421 in the extending direction of the locking tube 421;

[0092] When the pressure in the pipeline or pressure vessel is high, the pressure in the second chamber is high, and the valve stem 432 is forced to drive the safety tube 433 to slide away from the pipeline or pressure vessel, and the other end of the safety tube 433 connected to the valve stem 432 moves to the position of the power-assisting hole 423, thereby limiting the insertion of the power-assisting rod 424 into the power-assisting hole 423.

[0093] By providing the safety valve 431, the valve stem 432 and the safety tube 433, the safety component 43 and the locking component 42 cooperate with each other to play a role of safety alarm. When the pressure in the pipeline or the pressure vessel is high, the valve stem 432 is forced to drive the safety tube 433 to slide in the direction away from the pipeline or the pressure vessel. Since the safety tube 433 is arranged inside the locking tube 421, the safety tube 433 will move to the position of the power-assisting hole 423, thereby limiting the power-assisting rod 424 from being inserted into the power-assisting hole 423 to rotate the locking tube 421, so that the locking component 42 cannot be opened at this time. The setting of the locking component 42 and the safety component 43 integrates the locking function and the safety alarm function into the safety locking device 4, realizing an integrated structure. Because the safety locking device 4 is fixed to the end cover 2 through the base 41, when the blind plate is opened, the end cover 2 is an integrated structure, avoiding the problem of on-site confusion and easy loss of parts due to disassembly and assembly of parts, thereby increasing the practicality and reliability of the present invention.

[0094] As a preferred embodiment of the above embodiment, the second cavity and the valve stem 432 are provided with matching conical surfaces, the area of ​​the conical surface at one end close to the pipeline or pressure vessel is larger than the area of ​​the end away from the pipeline or pressure vessel, and the valve stem 432 is provided with a sealing ring on the conical surface.

[0095] Through the matching conical surfaces, the valve stem 432 is provided with a sealing ring on the conical surface, so that the internal pressure of the pipeline or pressure vessel is relatively large. When the valve stem 432 is squeezed, through the matching conical surfaces and the sealing ring, the greater the pressure, the better the sealing effect, forming self-sealing, which increases the practicality and reliability of the present invention.

[0096] As a preferred embodiment of the above embodiment, the locking tube 421 is provided with a plug 434 at one end away from the pipeline or the pressure vessel. By providing the plug 434, on the one hand, dust can be prevented from falling into the locking tube 421, and on the other hand, the displacement of the movable tube 422 is restricted to prevent the movable tube 422 from being separated from the locking tube 421, thereby ensuring the integrity of the present invention when in use, facilitating the installation of the safety locking device 4, and increasing the practicality and reliability of the present invention.

[0097] As a preferred embodiment of the above, the push rod 425 is of two-section type, and the two sections of the push rod 425 are rotatably connected. A baffle 21 is provided on the end cover 2, and the baffle 21 is used to limit the movement of the locking block 3 away from the pipeline or the pressure vessel.

[0098] By setting the push rod 425 to be a two-section type, and the two sections are rotatably connected, a baffle 21 is provided on the end cover 2, thereby limiting the movement of the locking block 3 in a direction away from the pipeline or the pressure vessel, so that the locking block 3 can only move along a plane parallel to the end cover 2, so that the locking block 3 can be disengaged from the locking groove 12 more smoothly without generating a height difference and thus being stuck. It is also convenient when locking the end cover 2, and the locking block 3 can be accurately moved into the locking groove 12 without generating a height difference, thereby increasing the practicality and reliability of the present invention.

[0099] As a preferred embodiment of the above embodiment, there are at least two locking blocks 3, and at least two locking blocks 3 are arranged at equal intervals. The locking blocks 3 are arranged in at least two pieces and are arranged at equal intervals, which ensures the uniformity of the locking force on the end cover 2, prevents uneven extrusion pressure between the end cover 2 and the locking blocks 3 when the internal pressure of the pipeline or pressure vessel is high, and affects the sealing effect, thereby increasing the practicality and reliability of the present invention.

[0100] As a preference of the above embodiment, a handle 22 is provided on the end cover 2. The provision of the handle 22 facilitates personnel to take the end cover 2, thereby increasing the practicality of the present invention.

[0101] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An integrated quick-opening blind plate, characterized in that: include: A barrel flange (1), wherein the barrel flange (1) is arranged on a pipeline or a pressure vessel, the barrel flange (1) is a through structure and is communicated with the inside of the pipeline or the pressure vessel, and the barrel flange (1) comprises: an annular groove (11), the annular groove (11) being arranged on the inner wall of the cylinder flange (1); A locking groove (12), wherein the locking groove (12) is arranged at an end of the annular groove (11) away from the pipeline or the pressure vessel; A sealing groove (13), wherein the sealing groove (13) is arranged at one end of the annular groove (11) close to the pipeline or the pressure vessel; An end cover (2), the end cover (2) being detachably disposed in the annular groove (11); A sealing ring, the sealing ring being arranged in the sealing groove (13); A locking block (3), wherein the locking block (3) is arranged in the locking groove (12) to lock the end cover (2); A safety locking device (4), wherein the safety locking device (4) comprises: A base (41), wherein the base (41) is fixedly disposed on the end cover (2); A locking assembly (42), the locking assembly (42) being arranged on the base (41) and pressing or releasing the locking block (3); A safety component (43), the safety component (43) being arranged on the base (41) and restricting the locking component (42) from loosening the locking block (3) when the pressure in the pipeline or the pressure container is relatively high; The locking assembly (42) is connected to the locking block (3), and when the blind plate is in an open state, the safety locking device (4) and the locking block (3) are both located on the end cover (2); The base (41) is provided with a first cavity inside; the locking assembly (42) comprises: a locking tube (421), one end of the locking tube (421) being disposed in the first cavity, and the other end of the locking tube (421) being located outside the first cavity and extending in a direction away from the pipeline or the pressure vessel, and the locking tube (421) being rotated with its extension direction as the axis; A movable tube (422), the movable tube (422) being arranged at one end of the base (41) away from the pipeline or the pressure vessel, the movable tube (422) being located outside the locking tube (421) and sliding along the extending direction of the locking tube (421); A power-assisting hole (423), the power-assisting hole (423) being arranged at one end of the locking tube (421) away from the pipeline or the pressure vessel, and the power-assisting hole (423) being arranged perpendicular to the extending direction of the locking tube (421); A boosting rod (424), the boosting rod (424) being used to be inserted into the boosting hole (423) so as to rotate the locking tube (421); A push rod (425), one end of which is fixedly connected to the locking block (3), and the other end of which is rotatably connected to the outer wall of the movable tube (422); A limiting structure (426) is provided on the locking tube (421) and the movable tube (422); when the locking tube (421) rotates, the limiting structure (426) limits the sliding of the movable tube (422) so as to press the locking block (3) into the locking groove (12); when the movable tube (422) slides in the extending direction of the locking tube (421), the push rod (425) pulls the locking block (3) so as to make the locking block (3) disengage from the locking groove (12); There are at least two locking blocks (3), and at least two locking blocks (3) are arranged at equal intervals.

2. The integrated quick-opening blind plate according to claim 1, characterized in that: The limiting structure (426) comprises: A first limiting block (4261), wherein there are at least two first limiting blocks (4261) fixedly disposed on the inner wall of the movable tube (422), and a sliding groove is provided between at least two first limiting blocks (4261); Second limit blocks (4262), the number of the second limit blocks (4262) is equal to that of the first limit blocks (4261), and the second limit blocks (4262) are fixedly arranged on the outer wall of the locking tube (421); When the second limit block (4262) rotates to the sliding groove along with the locking tube (421), the movable tube (422) slides along the extension direction of the locking tube (421); When the second limit block (4262) rotates to the position of the first limit block (4261) along with the locking tube (421), the first limit block (4261) cooperates with the second limit block (4262) to limit the sliding of the movable tube (422).

3. The integrated quick-opening blind plate according to claim 2, characterized in that: The end of the first limit block (4261) away from the pipeline or pressure vessel is formed into two inclined surfaces, the distance between the edge where the two inclined surfaces meet and the pipeline or pressure vessel is greater than the distance between the other two ends of the two inclined surfaces and the pipeline or pressure vessel, and a protrusion is provided on any of the inclined surfaces.

4. The integrated quick-opening blind plate according to claim 1, characterized in that: The end cover (2) is provided with a through hole at the position of the first cavity, and the safety component (43) comprises: a safety valve (431), one end of the safety valve (431) being arranged inside the locking tube (421), and the other end of the safety valve (431) being arranged inside the through hole, a second cavity being arranged inside the safety valve (431), and the second cavity being communicated with the inside of the pipeline or the inside of the pressure container; a valve stem (432), one end of which is disposed in the second cavity and slides along an end away from the pipeline or the pressure vessel; A safety tube (433), wherein the safety tube (433) is disposed in the locking tube (421), and one end of the safety tube is fixedly connected to the other end of the valve stem (432) disposed in the second cavity, and the safety tube (433) slides along the inner wall of the locking tube (421) in the extending direction of the locking tube (421); When the pressure in the pipeline or the pressure container is high, the pressure in the second chamber is high, and the valve stem (432) is forced to drive the safety tube (433) to slide away from the pipeline or the pressure container, and the other end of the safety tube (433) connected to the valve stem (432) moves to the position of the power-assisting hole (423), thereby limiting the insertion of the power-assisting rod (424) into the power-assisting hole (423).

5. The integrated quick-opening blind plate according to claim 4, characterized in that: The second cavity and the valve stem (432) are provided with matching conical surfaces, the area of ​​the conical surface at one end close to the pipeline or the pressure vessel is larger than the area of ​​the end away from the pipeline or the pressure vessel, and the valve stem (432) is provided with a sealing ring on the conical surface.

6. The integrated quick-opening blind plate according to claim 5, characterized in that: The locking tube (421) is provided with a plug (434) at one end away from the pipeline or the pressure vessel.

7. The integrated quick-opening blind plate according to claim 1, characterized in that: The push rod (425) is of two-section type, and the two sections of the push rod (425) are rotatably connected. A baffle (21) is provided on the end cover (2), and the baffle (21) is used to limit the movement of the locking block (3) in a direction away from the pipeline or the pressure vessel.

8. The integrated quick-opening blind plate according to claim 1, characterized in that: The end cover (2) is provided with a handle (22).

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