CN217635119U - Double-way underground gas pressure regulating box - Google Patents

Abstract

The application relates to a double-path underground gas pressure regulating box, which comprises a pressure regulating pipeline, a lower box body, an integrated pressure regulating part, a diffusing component and an upper box body; the lower box body wraps the two pressure regulating pipelines, a box body sealing plate is arranged at the top of the lower box body, and pressure regulating core mounting holes are formed in the plate; the two pressure regulating pipelines are arranged in parallel in the lower box body and comprise a high-pressure chamber, a pressure-bearing connecting pipe and a low-pressure chamber; the high-pressure chamber is communicated with the inlet pipeline, and the upper part of the high-pressure chamber is open; the pressure-bearing connecting pipe is arranged above the high-pressure cavity, the lower end of the pressure-bearing connecting pipe is matched with the upper opening structure of the high-pressure cavity, and the upper end of the pressure-bearing connecting pipe is connected to the pressure-regulating core mounting hole; the low-pressure chamber is arranged at the bottom and one side of the high-pressure chamber in a coating manner and communicated with the high-pressure chamber, and the low-pressure chamber is communicated with the outlet pipeline; the integrated pressure regulating part is arranged on the box body sealing plate, and the diffusing component is arranged beside the integrated pressure regulating core and communicated with the outlet pipeline through a diffusing connecting pipe; go up the box top and can open and shut, be located box top down, the cover is established in the outside of integrated accent splenium and diffuse the subassembly.

Description

Double-way underground gas pressure regulating box

Technical Field

The application relates to a gas transmission and distribution technical field especially relates to a double-circuit underground gas pressure regulating box.

Background

With the development of economic society, fuel gas is widely applied in a large quantity, and then the fuel gas is widely applied as a necessary fuel gas pressure regulating box in a fuel gas transmission and distribution system.

Most of the traditional gas pressure regulating boxes are arranged on the ground, and occupy larger land area according to standard construction, so that the defects of land resource waste and high civil engineering cost exist; the valve, the filter, the pressure regulator and the like are connected in sequence inside the box body through pipelines, so that the occupied space is large, and the maintenance is complex; the ground in part of the box body is wet and is not smooth in ventilation, and used equipment is extremely easy to corrode, so that potential safety hazards exist; meanwhile, a plurality of pressure regulating boxes are arranged beside a road, so that the sight is easy to be shielded, and the surface of the box body has obvious scratches and stains due to the non-civilized behaviors of some passers, so that the appearance is influenced, and the risk of gas leakage caused by vehicle collision exists; in addition to this, most surge tanks are easily opened, with the risk of being illegally parametrized and shutting off the gas supply.

In the design and site selection of the pressure regulating box, the requirements of safety distance and site selection in a construction red line are met, and on the current urban construction land with the precious soil, the areas meeting the requirements are few and few, the site selection difficulty is high, so the gas underground pressure regulating box with low requirements of safety distance is produced at present.

In the practical use of the underground pressure regulating box, the integrated gas underground pressure regulating box which can bear load, is waterproof and sealed, occupies small space, is designed in an integrated manner, and is convenient to maintain and repair is more and more recognized by the majority of users and related management units. The existing underground pressure regulating box is mostly a single path, namely, the arrangement of one opening and one standby in the field of gas transmission and distribution can be realized only by two units, the inlet and outlet pipelines of two units of equipment are connected by pipes needing to be welded on site, and the site construction amount is large.

Underground gas pressure regulating box's among the prior art integration level is more and more high, and there has been the pressure regulating core that adopts two way the same configurations, it is integrated in same shell box, realize the configuration commonly used of "one division is equipped with" promptly, to the higher double-circuit gas pressure regulating equipment of integration level, double-circuit gas pressure regulating equipment need set up two sets of pressure-bearing barrels in limited space, but highly integrated shell box leads to the unable demand that satisfies of welding of two barrel mid portions, lack one kind and guaranteeing under the sufficient prerequisite of complete machine structural strength, still have the double-circuit underground pressure regulating equipment of higher integration level.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a double-circuit underground fuel gas pressure regulating box, which comprises a pressure regulating pipeline, a lower box body, an integrated pressure regulating part, a diffusing component and an upper box body; the lower box body wraps the two pressure regulating pipelines, a box body sealing plate is arranged at the top of the lower box body, and a pressure regulating core mounting hole is formed in the box body sealing plate; the number of the pressure regulating pipelines is two, the pressure regulating pipelines are arranged in the lower box body in parallel and comprise a high-pressure chamber, a pressure-bearing connecting pipe and a low-pressure chamber; the high-pressure chamber is communicated with the inlet pipeline, and the upper part of the high-pressure chamber is open; the pressure-bearing connecting pipe is arranged above the high-pressure chamber, the lower end of the pressure-bearing connecting pipe is matched with the upper opening structure of the high-pressure chamber, and the upper end of the pressure-bearing connecting pipe is connected to the pressure-regulating core mounting hole; the low-pressure chamber is arranged at the bottom and one side of the high-pressure chamber in a coating manner, is communicated up and down through the bottom of the high-pressure chamber, and is communicated with the outlet pipeline; the integrated pressure regulating parts correspond to the pressure regulating pipelines one to one, are arranged on the box body sealing plate and comprise integrated pressure regulating core main regulating components, the integrated pressure regulating core main regulating components are hermetically arranged at the pressure regulating core mounting holes, and the lower ends of the integrated pressure regulating components extend into the high-pressure cavity; the diffusing components correspond to the pressure regulating pipelines one by one and are arranged beside the integrated pressure regulating core, and the diffusing components are communicated with the outlet pipeline through a diffusing connecting pipe; the upper box body is positioned above the lower box body, covers the integrated pressure regulating part and the outer side of the diffusing component, and the upper part of the upper box body is provided with an upper cover which can be opened and closed.

In one possible implementation, the thickness of the side wall of the pressure-bearing connecting pipe is greater than that of the high-pressure chamber; the axial height of the pressure-bearing connecting pipe is greater than the thickness of the box body sealing plate.

In a possible implementation manner, the integrated pressure regulating part further comprises a cutting flange, a cutting drive, an inlet pressure gauge, an outlet pressure gauge and a differential pressure gauge; the cutting flange is installed on the box body sealing plate, and the integrated pressure regulating core main regulating assembly is fixed to the cutting flange through screw connection and is fixed to the box body sealing plate; the cutting-off drive is provided with a drive sealing disc capable of pressing a valve port of the pressure regulating core main regulating assembly, and the drive sealing disc is arranged beside the pressure regulating core main regulating assembly; the inlet pressure gauge, the outlet pressure gauge and the differential pressure gauge are arranged on the cutting flange and are arranged around the cutting drive in a surrounding mode; the inlet pressure gauge is communicated to the inlet pipeline; the outlet pressure gauge is communicated to the outlet pipeline; and a high pressure taking port and a low pressure taking port of the differential pressure gauge are respectively bridged on the inner side and the outer side of the filter element in the integrated pressure regulating core.

In one possible implementation, the bleeding component comprises a bleeding valve, a bleeding intermediate connecting pipe and a bleeding connecting pipe; the upper box body is provided with a dispersion opening; the bleeding valve is communicated to the outlet pipeline through the box body sealing plate; the two bleeding valves are communicated through the bleeding middle connecting pipe; the diffusion valve is communicated with the diffusion opening through the diffusion connecting pipe.

In a possible implementation manner, the upper box body further comprises a window frame, a window plate and a window sealing strip; the window plate is made of transparent materials; the window frame is erected and fixed on the inner top of the upper box body and is positioned at the lower side of the upper cover; the window sealing strip is attached between the window plate and the window frame.

In a possible implementation manner, a sealing gasket is padded at the connecting edge of the upper box body and the lower box body; a breathing port is formed in the side wall of the upper box body; the upper cover is provided with a rib plate frame, and handles are arranged on the opposite sides of the openable cover hinge.

In a possible implementation mode, the pressure regulator director is arranged on the box sealing plate and communicated with the integrated pressure regulating core main regulating assembly so as to drive the integrated pressure regulating core main regulating assembly to work through gas.

In a possible implementation manner, the low-pressure chamber is arranged at the opposite side of the high-pressure chamber communicated with the inlet pipeline in a covering manner, and the outlet pipeline and the inlet pipeline are arranged in opposite positions; the high-pressure chamber comprises a main cylinder side enclosing plate and a partition plate; the side wall plate of the main cylinder body is a cylindrical plate with a hollow inner part, the bottom of the side wall plate of the main cylinder body is welded and fixed to the bottom of the lower box body, and a vent hole or a vent groove is formed in the position, close to one side of the outlet pipeline, of the bottom of the side wall plate of the main cylinder body;

the partition plate is welded and fixed to a position, close to the bottom, of the side surrounding plate of the main cylinder body, the position is matched with the position, close to the bottom, of the side surrounding plate of the main cylinder body in structure, and the communication hole is formed in the center of the partition plate.

In one possible implementation manner, the low-pressure chamber covers one side of the main cylinder and comprises a secondary cylinder sealing plate, a secondary cylinder side sealing plate and a bottom secondary cylinder sealing plate which are hermetically connected with the high-pressure chamber, and the low-pressure chamber covers the opposite side of the high-pressure chamber and is coaxial with the high-pressure chamber; one end of the auxiliary cylinder body sealing plate is matched with the structure of the main cylinder body side enclosing plate and is welded and fixed outside the main cylinder body side enclosing plate, and the other end of the auxiliary cylinder body sealing plate is welded and fixed with the auxiliary cylinder body side enclosing plate; the auxiliary cylinder side surrounding plate is an arc-shaped plate, the radius of the auxiliary cylinder side surrounding plate is smaller than that of the main cylinder side surrounding plate, the bottom edge of the auxiliary cylinder side surrounding plate is of a straight structure or a convex arc-shaped structure, and the lowest end of the auxiliary cylinder side surrounding plate is welded to the bottom of the lower box body; the outer edge of the bottom auxiliary cylinder body sealing plate close to the inlet pipe side is matched with the bottom structure of the main cylinder body side enclosing plate, the outer edge of the bottom auxiliary cylinder body sealing plate close to the outlet pipe side is matched with the bottom structure of the auxiliary cylinder body side enclosing plate, namely, part of the bottom auxiliary cylinder body sealing plate is welded and fixed with the position, close to the bottom, of the main cylinder body side enclosing plate, and the rest of the bottom auxiliary cylinder body sealing plate is welded and fixed with the position, close to the bottom, of the auxiliary cylinder body side enclosing plate.

In a possible implementation manner, the upper end of the pressure-bearing connecting pipe is welded and fixed with the position of the pressure-regulating core mounting hole corresponding to the sealing plate of the box body.

The beneficial effect of this application: through being provided with two pressure regulating pipelines side by side in the box down, and two adjacent settings of pressure regulating pipeline, the uncovered department installation pressure-bearing connecting pipe of high pressure cavity, and on box down through pressure-bearing connecting pipe fixed connection, be used for assuming the main weight that needs the integrated pressure regulating core of installation, can effectual solution two high pressure cavity mid portions can't satisfy the welding requirement, and the relatively poor problem of structural strength, that is to say, set up the pressure-bearing connecting pipe through the local position of seting up the pressure regulating core mounting hole, in order to guarantee that two are integrated in a box between the pressure regulating core, the too near problem of interval between the barrel can not appear, can't reach welding strength's problem, in guaranteeing its structural strength, reduce cost. Furthermore, pressure regulating pipelines such as the main cylinder body are fixed into the lower box body through the pressure-bearing connecting pipes matched in structure, the welding seams between the sealing pressure regulating plate and the connecting pipes can be structural welding seams only, the sealing pressure regulating plate can be fixedly connected without pressure-bearing welding seams, welding requirements are low, and the sealing pressure regulating plate is easy to operate by technicians in the field. Moreover, compare in directly with the main barrel weld sealed pressure regulating plate on, whole thickness can be reduced to the sealed pressure regulating plate of unpressurized, only needs to guarantee that the section of thick bamboo wall of connecting cylinder has sufficient thickness, ensures that the structural strength outside, sealed pressure regulating plate can reduce the material quantity by a wide margin, reduce cost.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

FIG. 1 shows a cross-sectional view of a two-way underground gas surge tank (with the upper lid open) according to an embodiment of the present application;

FIG. 2 illustrates a top view of a two-way underground gas surge tank (with the top lid open) according to an embodiment of the present application;

FIG. 3 shows a top half-section view of a two-way underground gas surge tank (top lid closed) according to an embodiment of the present application.

Part number gauge

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It will be understood, however, that the terms "central," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application or for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

FIG. 1 shows a cross-sectional view of a two-way underground gas surge tank (with the upper lid open) according to an embodiment of the present application; FIG. 2 shows a top view of a two-way underground gas surge tank (with the top lid open) according to an embodiment of the present application; FIG. 3 shows a top half-section view of a two-way underground gas surge tank (top lid closed) according to an embodiment of the present application.

As shown in fig. 1 to 3, the two-way underground gas pressure regulating tank includes: the pressure regulating device comprises a pressure regulating pipeline, a lower box body 22, an integrated pressure regulating part 20, a diffusing assembly and an upper box body 7, wherein the lower box body 22 coats two pressure regulating pipelines, a box body sealing plate 5 is arranged at the top of the lower box body 22, pressure regulating core mounting holes are formed in the box body sealing plate 5, the number of the pressure regulating pipelines is two, the two pressure regulating pipelines are arranged in the lower box body 22 in parallel and comprise a high-pressure cavity, a pressure bearing connecting pipe 54 and a low-pressure cavity, the high-pressure cavity is communicated with an inlet pipeline 3, the upper part of the high-pressure cavity is open, the pressure bearing connecting pipe 54 is arranged above the high-pressure cavity, the lower end of the high-pressure cavity is matched with the upper open structure of the high-pressure cavity, the upper end of the high-pressure cavity is connected to the pressure regulating core mounting holes, and the low-pressure cavity is coated at the bottom and one side of the high-pressure cavity, the integrated pressure regulating part 20 is in one-to-one correspondence with the pressure regulating pipeline and is installed on a box body sealing plate 5 and comprises an integrated pressure regulating core main regulating component 23, the integrated pressure regulating core main regulating component 23 is installed at a pressure regulating core installation hole in a sealing mode, the lower end of the integrated pressure regulating core main regulating component 23 extends into the high-pressure cavity, a diffusing component is in one-to-one correspondence with the pressure regulating pipeline and is arranged beside the integrated pressure regulating core, the diffusing component and the outlet pipeline 19 are communicated through a diffusing connecting pipe, an upper box body 7 is located above a lower box body 22 and covers the outside of the integrated pressure regulating part 20 and the diffusing component, and an upper cover 10 which can be opened and closed is arranged on the upper portion of the upper box body 7.

In this embodiment, two pressure regulating pipelines are arranged in parallel in the lower box 22 and are arranged adjacent to each other, a pressure-bearing connecting pipe 54 is installed at an opening of the high-pressure chamber and is fixedly connected to the lower box 22 through the pressure-bearing connecting pipe 54 to bear the main weight of the integrated pressure regulating core to be installed, so that the problems that the middle parts of the two main cylinders cannot meet the welding requirement and the structural strength is poor can be effectively solved, that is, the pressure-bearing connecting pipe 54 is arranged at the local position where the pressure regulating core installing hole is formed, so that the two pressure regulating cores are integrated in one box, the problem that the distance between the cylinders is too close cannot occur, the problem that the welding strength cannot be reached, and the cost is reduced while the structural strength is ensured.

Further, the pressure regulating pipelines such as the main cylinder body and the like are fixed into the lower box body 22 through the pressure bearing connecting pipe 54 matched with the structure, the welding seam between the sealing pressure regulating plate and the connecting pipe can be only a structural welding seam, the fixed connection of the sealing pressure regulating plate and the connecting pipe is ensured, the pressure bearing welding seam is not needed, the welding requirement is low, and the operation of technicians in the field is easy. Moreover, compare in directly with the main barrel weld sealed pressure regulating plate on, whole thickness can be reduced to the sealed pressure regulating plate of unpressurized, only needs to guarantee that the section of thick bamboo wall of connecting cylinder has sufficient thickness, ensures that the structural strength outside, sealed pressure regulating plate can reduce the material quantity by a wide margin, reduce cost.

It should be noted that the specific structure of the lower box 22 may be various structures, generally, regular shapes, and the box 22 is covered on the pressure regulating pipeline to effectively protect the overall structure of the pressure regulating pipeline from being corroded by external soil and the like as little as possible, so as to reasonably prolong the service life of the device itself, and prevent parts such as the pressure-bearing main cylinder and the auxiliary cylinder from directly contacting with the external environment, so that the safety of the device is sufficiently ensured.

For ease of description and to ensure clarity of reference, the main cylinders referred to herein are: the high-pressure chamber and a small part of low-pressure chambers communicated with the lower part of the high-pressure chamber; the auxiliary cylinder body is as follows: is positioned at the side of the main cylinder body to form a low-pressure chamber of the rest part.

The low-pressure chamber and the high-pressure chamber which are positioned at the lower part of the high-pressure chamber can be arranged in a wall-sharing way, and the main cylinder and the auxiliary cylinder are arranged.

In one embodiment, the pressure-bearing connecting pipe 54 has a sidewall thickness greater than that of the high-pressure chamber, and the axial height of the pressure-bearing connecting pipe 54 is greater than that of the box sealing plate 5.

In one embodiment, the integrated pressure regulating unit 20 further includes a cutting flange 47, a cutting driver 25, an inlet pressure gauge 27, an outlet pressure gauge 31 and a differential pressure gauge 32, the cutting flange 47 is mounted on the box sealing plate 5, the integrated pressure regulating core main regulating assembly 23 is fixed to the cutting flange 47 through a screw joint, the cutting driver 25 has a driving sealing disc capable of pressing a valve port of the pressure regulating core main regulating assembly and is disposed beside the pressure regulating core main regulating assembly, the inlet pressure gauge 27, the outlet pressure gauge 31 and the differential pressure gauge 32 are mounted on the cutting flange 47 and are annularly arranged around the cutting driver 25, wherein the inlet pressure gauge 27 is communicated with 3 paths of the inlet pipeline, the outlet pressure gauge 31 is communicated with 19 paths of the outlet pipeline, and a high pressure taking port and a low pressure taking port of the differential pressure gauge 32 are respectively bridged on the inner side and the outer side of the pressure regulating core.

In one embodiment, the bleeding component includes a bleeding valve 39, a bleeding intermediate connecting pipe 38 and a bleeding connecting pipe 35, the upper box 7 is opened with a bleeding port 33, the bleeding valve 39 is connected to the outlet pipeline 19 through a box sealing plate 5, the two bleeding valves 39 are connected through the bleeding intermediate connecting pipe 38, and the bleeding valve 39 and the bleeding port 33 are connected through the bleeding connecting pipe 35.

In one embodiment, the upper box 7 further includes a window 50 frame 8, a window plate 53 and a window 50 sealing strip 16, the window plate 53 is made of transparent material, the window 50 frame 8 is mounted with the fixed window plate 53 on the inner top of the upper box 7 and located on the lower side of the upper cover 10, and the window 50 sealing strip 16 is attached between the window plate 53 and the window 50 frame 8.

In one embodiment, a gasket is padded at the connecting edge of the upper box 7 and the lower box 22, a breathing opening 41 is arranged on the side wall of the upper box 7, a rib plate frame 12 is arranged on the upper cover 10, and a handle is arranged on the opposite side of the hinge 14 of the openable upper cover 10.

In one embodiment, the pressure regulator director 44 is disposed on the box sealing plate 5 and is in communication with the integrated pressure regulating core main control assembly for driving the integrated pressure regulating core main control assembly to operate by the gas.

In one embodiment, the low-pressure chamber is coated on the opposite side of the high-pressure chamber communicated with the 3 ways of the inlet pipeline, and the 19 ways of the outlet pipeline are arranged opposite to the 3 ways of the inlet pipeline, the high-pressure chamber comprises a main cylinder side surrounding plate and a partition plate, the main cylinder side surrounding plate is a cylindrical plate with a hollow interior, the bottom of the main cylinder side surrounding plate is welded and fixed to the bottom of the lower box body 22, a vent hole or a vent groove is formed in the position, close to the 19 ways of the outlet pipeline, of the bottom of the main cylinder side surrounding plate, the partition plate is welded and fixed to the position, close to the bottom, of the main cylinder side surrounding plate and matched with the position structure of the main cylinder side surrounding plate, and the vent hole is formed in the center of the partition plate.

In one embodiment, the low-pressure chamber covers one side of the main cylinder body and comprises a secondary cylinder body sealing plate in sealing connection with the high-pressure chamber, a secondary cylinder body side surrounding plate and a bottom secondary cylinder body sealing plate, and the low-pressure chamber covers the opposite side of the high-pressure chamber and is in common wall with the high-pressure chamber, wherein one end of the secondary cylinder body sealing plate is matched with the structure of the primary cylinder body side surrounding plate and is welded and fixed to the outer portion of the primary cylinder body side surrounding plate, the other end of the secondary cylinder body sealing plate is welded and fixed with the secondary cylinder body side surrounding plate, the secondary cylinder body side surrounding plate is an arc-shaped plate, the radius of the secondary cylinder body side surrounding plate is smaller than that of the primary cylinder body side surrounding plate, the bottom edge of the secondary cylinder body side surrounding plate is a straight structure or a convex arc-shaped structure, the lowest end of the secondary cylinder body side surrounding plate is welded and fixed to the bottom of the lower box 22, the outer edge of the bottom secondary cylinder body sealing plate close to the inlet pipeline 3 side is matched with the bottom structure of the primary cylinder body side surrounding plate, the outer edge close to the outlet pipeline 19 side is matched with the bottom structure of the secondary cylinder body side surrounding plate, and the other portions of the secondary cylinder body side surrounding plate are fixed to the bottom position.

In one embodiment, the upper end of the pressure-bearing connecting pipe 54 is welded and fixed to the corresponding pressure-regulating core mounting hole of the box sealing plate 5.

An upper cover 10 is installed on the upper portion of the upper box body 7, the upper cover and the lower box body are connected through a hinge 14 and are of a single-side opening type, an upper cover handle 11 is welded on the opening side of the upper cover 10, and the upper cover 10 is convenient to lift. The upper cover 10 is connected with a connecting plate of a lock sleeve 13 on the upper box body 7 through the lock sleeve 13, so that the box body and the upper cover 10 are locked. The periphery of the upper cover 10 is provided with an upper cover 10 sealing strip frame, and the joint between the upper cover 10 and the upper box body 7 is filled by an upper cover sealing frame 9 during locking, so that the sealing, waterproof and leakage-proof functions are achieved.

The middle part of the upper cover 10 is provided with the rib plate frame 12, so that the rigidity of the upper cover 10 can be improved, the bearing capacity can be increased, and meanwhile, the cover opening operation can be facilitated due to the fact that the weight of the upper cover 10 is not increased too much.

The upper cover 10 is provided with a screw plug 49 to ensure that the lock sleeve 13 mechanism does not enter sandy soil muddy water, thereby facilitating the cover opening operation. Meanwhile, the screw plug 49 is a special-shaped non-standard part and can be opened only by a special tool, so that equipment management work in use is facilitated.

The upper cover 10 can be internally provided with a nameplate and externally provided with a warning plate 48.

The upper box body 7 is provided with a window 50 which consists of a window 50 frame 8, a window plate 53 and a window 50 sealing strip 16. The window plate 53 is made of a light, colorless, transparent, and high-strength material. The window 50 is integrally fixed in the upper case 7 by a wing nut assembly 51, forming a barrier to the internal equipment, preventing water and dust from entering the lower space, and preventing leaked gas from entering the window 50 and the space in the upper cover 10. The window 50 and the upper cover 10 form two seals, so that the safety is improved.

Go up and be provided with breathing hole 41 on the box 7, can ensure that the gas can in time get into the blow-down pipe that exceeds ground four meters through the metal collapsible tube that links to each other with breathing hole 41 and dissipate to the atmosphere when internal plant takes place the gas and leaks. The breathing port 41 eliminates the hidden danger of gas ejection when the window 50 and the upper cover 10 bear gas pressure due to internal gas leakage and the upper cover 10 is opened during maintenance; meanwhile, the normal operation of equipment needing breathing, such as an internal cut-off valve, a pressure regulator and the like, is ensured.

The upper tank 7 is provided with a vent 33, the inside of which is connected to a vent valve 39 and the outside of which is connected to a vent pipe.

The upper box body 7 is provided with a reserved port 4628 and a reserved port 4628, and can provide an interface for installing other instruments.

The upper box body 7 and the lower box body 22 are fixedly connected through a fastening bolt 30, and a box body sealing frame 6 is clamped at the joint to achieve the sealing and waterproof functions.

The lower box body 22 mainly comprises an inlet manifold 29, an inlet valve 4, an inlet pipeline 3, a box body sealing plate 5, a pressure-bearing cylinder, an outer frame plate 2, a lower bottom plate 21, an outlet pipeline 19, an outlet valve 18, an outlet manifold 40, corresponding pressure sampling pipes and the like, wherein the inlet valve 4, the pressure-bearing cylinder and the outlet valve 18 are configured in two ways. The pressure-bearing cylinder is a composite cylinder and is divided into a high-pressure chamber and a low-pressure chamber, and the high-pressure chamber accommodates the integrated pressure regulating core main regulating assembly 23. The outer frame plate 2 and the lower bottom plate 21 maintain the whole pressure-bearing cylinder, the auxiliary pipelines and the like, the pressure-bearing cylinder and the pipelines are prevented from directly contacting with soil, the corrosion speed is greatly reduced, and the service life of equipment is prolonged. Meanwhile, the outer frame plate 2 plays a supporting role for the inlet pipeline 3 and the outlet to improve the overall strength, and the risk that the welding line is broken due to the fact that the tensile force between the inlet and outlet pipeline 19 and the welding line of the box body is increased due to the sedimentation of a welding pipe network is avoided.

A pressure regulating core and a relief valve 39 and their attachments are mounted and integrated on a case sealing plate 5 of the lower case 22.

The integrated pressure regulating core consists of a cutting flange 47, a cutting drive 25 arranged on the cutting flange, a pressure regulator director 44, an inlet pressure gauge 27, an outlet pressure gauge 31, a differential pressure gauge 32, an integrated pressure regulating core main regulating component 23 and the like. The integrated pressure regulating core is secretly rotated on the lower box body 22 through the fastening stud component, the integrated pressure regulating core is sealed with the box body sealing plate 5 through a sealing ring, and the integrated pressure regulating core is sealed with the mounting base in the pressure bearing cylinder through a sealing gasket. The cutting flange 47 is provided with a hanging ring 26, so that the integrated pressure regulating core can be integrally hoisted, and the maintenance is convenient.

The integrated pressure regulating core adopts a director acting type pressure regulator, and consists of a pressure regulator director 44 and a pressure regulator main regulator of the integrated pressure regulating core main regulator assembly 23, and the pressure regulator has the advantages of large flow range, sensitive pressure regulation and quick response.

The cut-off drive 25 can set a cut-off pressure value, when the outlet pressure value exceeds the cut-off pressure value, the cut-off drive 25 acts, a sealing disc of the cut-off drive 25 is tightly pressed on a valve port in the integrated pressure regulating core main regulating assembly 23, and the gas supply is interrupted, so that subsequent gas equipment is protected. The pressure taking port of the cut-off drive 25 is provided with a cut-off root valve 24, so that the error cut-off caused by overlarge outlet pressure fluctuation when the equipment is put into use is avoided, and the field operation is facilitated.

The high and low pressure taking ports of the differential pressure gauge 32 are bridged on the outer side and the inner side of the filter element in the integrated pressure regulating core, when the filter element is blocked, pressure drop is generated on the two sides of the filter element, and the differential pressure gauge 32 displays the reading. The cleaning degree of the filter element can be judged through the reading so as to replace the filter element in time.

The pressure-taking tower 36 is arranged on the box sealing plate 5 corresponding to the interface, is connected with the outlet pipeline 19 and provides outlet pressure signals for the cut-off drive 25, the pressure regulator director 44 and the outlet pressure gauge 31. The pressure-taking tower 36 is connected with each equipment room through a signal pipe 43.

The integrated voltage regulating core is provided with a high-voltage test port, and the voltage taking tower 36 is provided with a low-voltage test port 42 which can be used for testing during routine maintenance.

The bleeding valve 39 is arranged on the box body sealing plate 5 corresponding to the interface and is connected with the low-pressure end of the outlet pipeline 19, after the outlet pressure exceeds a bleeding set value, the bleeding valve 39 starts bleeding, and the pressure is prevented from continuously rising to protect subsequent equipment.

The bleeding valve 17 is arranged below the bleeding valve 39, and the bleeding valve 17 can be closed under the condition that the outlet valve 18 is not closed, so that the online maintenance and repair of the bleeding valve 39 can be carried out.

The two outlets of the bleeding valve 39 are connected with the middle bleeding connecting pipe, the three-way bleeding component 37, the bleeding connecting pipe 35 and the accessory and the bleeding opening 33. The diffused gas enters the diffusion pipe through the diffusion port 33 and the connecting pipe and is diffused to the upper air.

The pressure regulating box is matched with an emptying pipe and a diffusing pipe, the connecting pipe and the connecting pipe are respectively connected with the breathing port 41 and the diffusing port 33, and pipe caps are arranged on the emptying pipe and the diffusing pipe, so that rainwater and insects can be prevented from entering the pressure regulating box.

The underground pressure regulating box body comprises an upper box body 7, a lower box body 22, internal equipment and the like. The upper and lower cases 22 are made of steel material and the surfaces thereof are treated with corrosion-proof treatment.

The upper box body 7 is the installation and operation space of the instrument equipment and is installed with the lower box body 22 into a whole through bolts. A sealing gasket is clamped between the upper box body 7 and the lower box body 22 to achieve the sealing and waterproof functions.

A window 50 is installed in the upper case 7. The window 50 is made of a colorless, transparent, lightweight and high-strength material, and is embedded with a sealing strip. The window 50 can be conveniently fastened on the box body by screwing the nut, and the dustproof and waterproof sealing functions are realized.

The top of the upper box body 7 is provided with an openable upper cover 10. The middle part of the upper cover 10 is reinforced by a rib plate, and the periphery of the upper cover is provided with a sealing strip at the contact part with the upper edge of the upper box body 7. After the upper cover 10 is closed, the upper cover 10 can be fixed and the sealing strip can be pressed tightly through the non-standard bolt, so that the functions of locking, water resistance and leakage prevention are realized.

The upper cover 10 is provided with a handle for opening and closing the cover.

The upper box body 7 is provided with a breathing port 41, a dispersing port 33 and a reserved port 4628. The lower box body 22 is formed by welding two independent pressure-bearing cylinder bodies, an inlet and outlet pipeline 19, an inlet and outlet valve 18, a manifold and the like, and two independent integrated pressure regulating cores and a relief valve 39 are arranged in the box body.

The integrated pressure regulating core consists of a cutting flange 47, a cutting drive 25 arranged on the cutting flange, a pressure regulator director 44, a pressure regulator main regulator, a filter element, a pressure gauge, a differential pressure gauge 32 and the like. The integrated pressure regulating core is provided with a lifting ring 26 which can be integrally lifted up and down to be disassembled and maintained on the ground.

The two independent bleeding valves 39 are arranged, so that one bleeding valve 39 can be maintained, the other bleeding valve can run normally, the overall bleeding amount can be increased, and meanwhile, one bleeding valve 39 can be replaced by a valve according to requirements, so that one bleeding valve 39 can be shared by two bleeding valves.

The pressure regulating box is provided with a vent pipe and a diffusing pipe, an instrument box and a photovoltaic power supply device are installed on the vent pipe, the diffusing pipe is connected with a diffusing valve 39, and diffused fuel gas can be diffused to the high altitude to ensure safety when diffused.

The gas from the medium-pressure pipe network enters the pressure-bearing cylinder of the underground pressure regulating box from the inlet manifold 29 and the inlet valve 4, is filtered and regulated by the integrated pressure regulating core, flows out of the pressure regulating box through the outlet pipeline 19, the outlet valve 18 and the outlet manifold 40, and enters the low-pressure pipe network. The set outlet pressure is regulated by the regulator commander 44; when the outlet pressure exceeds the set pressure of the bleeding valve 39, the bleeding valve 39 automatically bleeds, and the gas enters the bleeding pipe through the metal hose and is dissipated into the atmosphere; when the outlet pressure of the pressure regulating tank exceeds the set pressure of the stop valve, the stop valve acts to close the passage of the pressure regulator. When a single path is in failure and needs to be maintained, only the inlet/outlet valve 18 of the path needs to be closed, and the whole ventilation is not affected.

The upper cover 10 and the window 50 keep a fastening and locking state during operation, sealing and leakage prevention can be ensured, and the box body breathing port 41 is connected with the emptying pipe through a metal connecting pipe, so that the inside of the box body is kept consistent with the outside atmospheric pressure. If the internal integrated pressure regulating core leaks, the leaked fuel gas can also escape to the high altitude from the emptying pipe through the breathing port 41, and the internal pressure of the box body is always kept consistent with the external atmospheric pressure, so that the equipment needing to breathe can be ensured to be normally operated.

The utility model provides a double-circuit underground gas pressure regulating box is formed by steel pipe steel sheet welding processing, is equipped with 3 ways of import header 29, inlet valve 4, inlet pipe, high-pressure chamber, low pressure chamber, pressure pipe, diffuse pipe, outlet pipe 19, outlet valve 18, export header 40. The inlet manifold 29 is connected to the inlet valve 4, the inlet valve 4 is connected to the inlet pipeline 3, the outlet pipeline 19 is connected to the outlet valve 18, and the outlet valve 18 is connected to the outlet manifold 40. The high-pressure chamber provides an installation space for the integrated pressure regulating core, and the low-pressure chamber is connected with the pressure taking pipe and the diffusing pipe to provide the outlet pressure and the diffusing pipeline required by the integrated pressure regulating core.

The pipe network fuel gas flows in from the inlet manifold 29, enters the high-pressure chamber through the inlet valve 4 and the inlet pipeline 3, enters the low-pressure chamber after being filtered and regulated by the integrated pressure regulating core, and finally flows out of the pressure regulating box through the outlet pipeline 19, the outlet valve 18 and the outlet manifold 40, and the air flow direction is shown by arrows in the figure. The pressure sampling pipe provides a pressure signal required by pressure regulation, the bleeding pipe is connected with the bleeding valve 39, and when the outlet pressure is too high, the bleeding valve 39 releases pressure to protect gas-using equipment.

In one embodiment, the communication hole extends towards the top of the main cylinder body and is provided with a positioning ring.

In this embodiment, two main cylinders, two auxiliary cylinders and related accessories with the same configuration are formed, and two integrated voltage regulating cores with the same configuration can be installed, so that the common configuration of one opening and one standby in one box body is realized. The communicating hole of seting up on the division board upwards extends and has a section mount table, and the welding is fixed the holding ring on the mount table, perhaps can directly weld the holding ring in the corresponding position of division board so that fix a position integrated pressure regulating core when the installation.

In one embodiment, one end of the main cylinder body is welded with a connecting pipe, the other end of the main cylinder body is welded with a cylinder body sealing plate, the inner part of the main cylinder body is welded with a separation plate, the cylinder body is provided with a hole for welding 3 paths of inlet pipelines, and the other side of the cylinder body is welded with an auxiliary cylinder body. And a positioning ring is welded on the partition plate. One side of the auxiliary cylinder body is welded with an auxiliary cylinder body sealing plate, one side of the auxiliary cylinder body is welded with a cylinder body sealing plate, and the cylinder body is provided with a hole and welded with 19 paths of outlet pipelines.

The main cylinder side surrounding plate, the connecting pipe, the partition plate, the bottom auxiliary cylinder body sealing plate, the auxiliary cylinder body side surrounding plate, the auxiliary cylinder body sealing plate, the inlet pipeline 3 and the outlet pipeline 19 jointly form a complete pressure regulating pipeline.

Two sets of identical cylinder assemblies are welded on the upper top plate, two sets of identical pressure taking outer pipes and relief pipelines are welded between the upper top plate and 19 paths of the outlet pipeline, and pressure taking inner pipes are welded in the 19 paths of the outlet pipeline.

It is to be noted here that the bottom of the side wall of the main cylinder is welded to the bottom of the casing body, and the inside of the side wall of the main cylinder includes a high-pressure chamber located at the upper part and a part of a low-pressure chamber located at the lower part, which are separated by a partition plate disposed at a position close to the bottom of the side wall of the main cylinder, and the high-pressure chamber and the low-pressure chamber are ensured to be communicated with each other, so to speak, in the side wall of the main cylinder: 3 routes of district are high-pressure chamber to the partition board between the inlet line, hold integrated pressure regulating core main part, and vice barrel side bounding wall, vice barrel shrouding and bottom are distinguished and are constructed low-pressure chamber together with main barrel side bounding wall portion altogether, and 19 routes of district are low-pressure chamber to the partition board to outlet line, also can say: the lower chamber of the main cylinder and all the chambers of the auxiliary cylinder jointly form all the low-pressure chambers.

Go up processing instrument box mounting hole on the roof, mountable instrument box, the integrated pressure regulating core mounting hole of processing, the integrated pressure regulating core of mountable, sealed face in the processing, the accessible installation rubber seal realizes going up the roof promptly and integrated pressure regulating core between sealed.

The lower sealing surface is processed in the inner area of the upper positioning ring of the partition plate, and the sealing between the integrated pressure regulating core and the partition plate can be realized by installing a rubber sealing gasket.

The positioning ring is provided with a tool mounting hole, a pressure testing tool can be mounted to seal the outlet hole on the partition plate, a corresponding pressure testing tool can be mounted on the integrated pressure regulating core mounting hole, and the pressure bearing strength of the high-pressure chamber and the low-pressure chamber can be tested after the inlet pipeline 3 and the outlet pipeline 19 are welded with the inlet and outlet valves 18.

One end of the pressure taking outer pipe is connected with the pressure taking inner pipe, and the other end of the pressure taking outer pipe is provided with a pressure taking hole. The pressure taking part is arranged on the pressure taking hole, so that the steady flow pressure formed by the longer straight pipe section in the outlet pipeline 19 can be accurately transmitted to the integrated pressure regulating core.

One end of the diffusing pipeline is connected with the low-pressure cavity, the other end of the diffusing pipeline is provided with a diffusing hole, and when the outlet pressure of the pressure regulating device is too high, the diffusing pipeline can be used for releasing pressure through the diffusing valve 39 so as to protect equipment to safely operate.

An inlet outer frame plate 2 and an outlet outer frame plate 2 are welded around the upper top plate, and an inlet pipeline 3 and an outlet pipeline 19 respectively pass through the inlet outer frame plate and the outlet outer frame plate. The lower bottom plate 21 is welded below the inlet outer frame plate 2 and the outlet outer frame plate 2, the pressure-bearing cylinder assembly and the pipeline are enclosed by the two frame plates and the bottom plate, the pressure-bearing cylinder and the pipeline are not in contact with soil to reduce corrosion under the buried working condition, and the underground buried pressure-bearing cylinder is suitable for buried arrangement. The inlet outer frame plate 2 and the outlet outer frame plate 2 are both made of thick steel plates, and can play a role in supporting the whole body besides playing a role in protecting an internal pressure-bearing cylinder pipeline, effectively bear the extrusion of surrounding soil to the inlet outer frame plate and the load brought by treading and rolling of pedestrians and vehicles above the inlet outer frame plate and the outlet outer frame plate, reduce the tension of the pipe network dead weight on the welding line between the inlet and outlet pipeline 19 and the cylinder assembly, and ensure the operation safety of equipment.

The inlet valve 4 is welded on the outer side of the inlet pipeline 3, the inlet valve 4 is welded with the inlet header 29, the outlet valve 18 is welded on the outer side of the outlet pipeline 19, and the outlet valve 18 is welded with the outlet header 40. The inlet and outlet manifolds 40 are respectively provided with a connector which is connected with a pipe network, and the manifolds and the valves can be welded in a factory so as to reduce the field welding workload of the equipment.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A double-circuit underground gas pressure regulating box is characterized by comprising a pressure regulating pipeline, a lower box body, an integrated pressure regulating part, a diffusing component and an upper box body;

the lower box body wraps the two pressure regulating pipelines, a box body sealing plate is arranged at the top of the lower box body, and a pressure regulating core mounting hole is formed in the box body sealing plate;

the number of the pressure regulating pipelines is two, the pressure regulating pipelines are arranged in the lower box body in parallel and comprise a high-pressure chamber, a pressure-bearing connecting pipe and a low-pressure chamber;

the high-pressure chamber is communicated with the inlet pipeline, and the upper part of the high-pressure chamber is open;

the pressure-bearing connecting pipe is arranged above the high-pressure chamber, the lower end of the pressure-bearing connecting pipe is matched with the upper open structure of the high-pressure chamber, and the upper end of the pressure-bearing connecting pipe is connected to the pressure regulating core mounting hole;

the low-pressure chamber is arranged at the bottom and one side of the high-pressure chamber in a coating manner, is communicated up and down through the bottom of the high-pressure chamber, and is communicated with the outlet pipeline;

the integrated pressure regulating parts correspond to the pressure regulating pipelines one to one, are arranged on the box body sealing plate and comprise integrated pressure regulating core main regulating components, the integrated pressure regulating core main regulating components are hermetically arranged at the pressure regulating core mounting holes, and the lower ends of the integrated pressure regulating components extend into the high-pressure cavity;

the diffusing components correspond to the pressure regulating pipelines one by one and are arranged beside the integrated pressure regulating part, and the diffusing components are communicated with the outlet pipeline through a diffusing connecting pipe;

the upper box body is positioned above the lower box body, covers the integrated pressure regulating portion and the outer side of the diffusing assembly, and an upper cover capable of being opened and closed is arranged on the upper portion of the upper box body.

2. The two-way underground gas pressure regulating tank as claimed in claim 1, wherein the thickness of the side wall of the pressure-bearing connecting pipe is greater than that of the high-pressure chamber;

the axial height of the pressure-bearing connecting pipe is greater than the thickness of the box body sealing plate.

3. The two-way underground gas pressure regulating box according to claim 1, wherein the integrated pressure regulating part further comprises a cutting flange, a cutting drive, an inlet pressure gauge, an outlet pressure gauge and a differential pressure gauge;

the cutting flange is installed on the box body sealing plate, and the integrated pressure regulating core main regulating assembly is fixed to the cutting flange through screw connection and is fixed to the box body sealing plate;

the cutting-off drive is provided with a drive sealing disc capable of pressing a valve port of the pressure regulating core main regulating assembly and is arranged beside the pressure regulating core main regulating assembly;

the inlet pressure gauge, the outlet pressure gauge and the differential pressure gauge are arranged on the cutting flange and are arranged around the cutting drive in a surrounding mode;

the inlet pressure gauge is communicated to the inlet pipeline;

the outlet pressure gauge is communicated to the outlet pipeline;

and a high pressure taking port and a low pressure taking port of the differential pressure gauge are respectively bridged on the inner side and the outer side of the filter element in the integrated pressure regulating core.

4. The two-way underground gas pressure regulating tank of claim 1, wherein the bleeding component comprises a bleeding valve, a bleeding intermediate connecting pipe and a bleeding connecting pipe;

the upper box body is provided with a dispersion opening;

the bleeding valve is communicated to the outlet pipeline through the box body sealing plate;

the two bleeding valves are communicated through the bleeding middle connecting pipe;

the diffusion valve is communicated with the diffusion opening through the diffusion connecting pipe.

5. The two-way underground gas pressure regulating box according to claim 1, further comprising a window frame, a window plate and a window sealing strip in the upper box body;

the window plate is made of transparent materials;

the window frame is erected and fixed on the inner top of the upper box body and is positioned at the lower side of the upper cover;

the window sealing strip is attached between the window plate and the window frame.

6. The two-way underground gas pressure regulating tank as claimed in claim 1, wherein a sealing gasket is padded at the connecting edge of the upper tank body and the lower tank body;

a breathing port is formed in the side wall of the upper box body;

the upper cover is provided with a rib plate frame, and handles are arranged on the opposite sides of the openable cover hinge.

7. The two-way underground gas pressure regulating tank of claim 1, wherein the integrated pressure regulating portion further comprises a pressure regulator director;

the pressure regulator director is arranged on the box sealing plate and communicated with the integrated pressure regulating core main regulating assembly to drive the integrated pressure regulating core main regulating assembly to work through gas.

8. The two-way underground gas pressure regulating tank as claimed in claim 1, wherein the low-pressure chamber is coated on the opposite side of the high-pressure chamber communicated with the inlet pipeline, and the outlet pipeline is arranged opposite to the inlet pipeline;

the high-pressure chamber comprises a main cylinder side enclosing plate and a partition plate;

the side wall plate of the main cylinder body is a cylindrical plate with a hollow inner part, the bottom of the side wall plate of the main cylinder body is welded and fixed to the bottom of the lower box body, and a vent hole or a vent groove is formed in the position, close to one side of the outlet pipeline, of the bottom of the side wall plate of the main cylinder body;

the partition plate is welded and fixed to a position, close to the bottom, of the side wall plate of the main cylinder body, the position of the side wall plate of the main cylinder body is matched with the position of the side wall plate of the main cylinder body in structure, and the communication hole is formed in the center of the partition plate.

9. The two-way underground gas pressure regulating tank of claim 8, wherein the low pressure chamber enclosing one side of the main cylinder comprises a secondary cylinder closing plate, a secondary cylinder side enclosing plate and a bottom secondary cylinder closing plate which are hermetically connected with the main cylinder, and the low pressure chamber enclosing the opposite side of the high pressure chamber and being co-walled with the high pressure chamber;

one end of the auxiliary cylinder body sealing plate is matched with the structure of the main cylinder body side enclosing plate and is welded and fixed outside the main cylinder body side enclosing plate, and the other end of the auxiliary cylinder body sealing plate is welded and fixed with the auxiliary cylinder body side enclosing plate;

the side wall plate at the side of the auxiliary cylinder body is an arc-shaped plate, the radius of the side wall plate at the side of the auxiliary cylinder body is smaller than that of the side wall plate at the side of the main cylinder body, the edge of the bottom of the side wall plate at the side of the auxiliary cylinder body is of a straight structure or a convex arc-shaped structure, and the lowest end of the side wall plate at the side of the auxiliary cylinder body is welded to the bottom of the lower box body;

the outer edge of the bottom auxiliary cylinder body sealing plate close to the inlet pipe side is matched with the bottom structure of the main cylinder body side enclosing plate, the outer edge of the bottom auxiliary cylinder body sealing plate close to the outlet pipe side is matched with the bottom structure of the auxiliary cylinder body side enclosing plate, namely, part of the bottom auxiliary cylinder body sealing plate is welded and fixed with the position, close to the bottom, of the main cylinder body side enclosing plate, and the rest part of the bottom auxiliary cylinder body sealing plate is welded and fixed with the position, close to the bottom, of the auxiliary cylinder body side enclosing plate.

10. The double-channel underground gas pressure regulating box according to claim 1, wherein the upper end of the pressure-bearing connecting pipe is welded and fixed with the position of the pressure regulating core mounting hole corresponding to the box body sealing plate.

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