CN212408285U

CN212408285U - Buried voltage regulating device

Info

Publication number: CN212408285U
Application number: CN202020528688.1U
Authority: CN
Inventors: 陈伟忠; 赵学朋; 姜大春
Original assignee: Jiangsu Shengwei Gas Technology Co ltd
Current assignee: Jiangsu Shengwei Gas Technology Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-01-26
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a buried pressure regulating device, which comprises a cylinder body and a pressure regulating component, wherein the left side and the right side of the cylinder body are correspondingly provided with an air inlet pipe joint and an air outlet pipe joint, the upper end and the lower end of the cylinder body are correspondingly provided with an upper sealing plate and a lower sealing plate, and the upper sealing plate is provided with a mounting hole and is fixed with an upper bracket; the inner cavity of the cylinder body is divided into an air inlet cavity and an air outlet cavity by a baffle plate assembly, the baffle plate assembly comprises a lower baffle plate, an upper baffle plate and a vertical baffle plate, the lower baffle plate is horizontally arranged at the lower side of an air inlet pipe joint, the lower baffle plate is provided with an air vent and is fixedly provided with a lower bracket, the upper baffle plate is arranged at the upper side of the air outlet pipe joint, and the upper end and the lower end of the vertical baffle plate are correspondingly connected with the upper baffle plate and the; the pressure regulating assembly comprises a pressure regulator and a blind plate, the pressure regulator and the blind plate are connected through a pull rod device, the lower end of the pressure regulator is clamped in the lower bracket, a lower sealing structure is arranged between the pressure regulator and the blind plate, and the blind plate is clamped in the upper bracket, and a lower sealing structure is arranged between the pressure regulator and the blind plate. The sealing device has the advantages of compact structure, convenience in disassembly and assembly, reliability in sealing and strong adaptability.

Description

Buried voltage regulating device

Technical Field

The utility model relates to a voltage regulator, concretely relates to vertical pressure regulating device who buries in underground.

Background

In a gas pipe network, a traditional pressure regulating station is usually arranged on the ground, so that a station house needs to be built for the traditional pressure regulating station so as to manage and maintain equipment such as a pressure regulator, a large amount of land resources and ground space are occupied, and urban planning is not facilitated. In order to solve the problem, the mode that equipment such as a pressure regulator is buried underground and an operation opening is arranged on the upper side of the pressure regulator appears in the field at present, but the air inlet and the air outlet of the existing buried gas pressure regulator have large height difference, so that the vertical size is large, the buried depth is large when the gas inlet and the air outlet are buried, the elevation of the air inlet and the air outlet is required to be adjusted through an elbow, the buried gas pressure regulator is connected with buried gas pipelines on two sides, the construction amount is increased, and the installation difficulty is large. Particularly, the existing buried gas pressure regulator adopts a plane sealing structure, and has the problems of unreliable sealing and poor safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bury ground pressure regulating device, it has compact structure, easy dismounting, sealed reliable, strong adaptability's advantage, can effectively reduce the buried depth, reduces the installation degree of difficulty, improves the security.

In order to solve the problems in the prior art, the utility model provides a buried pressure regulating device, which comprises a cylinder body and a pressure regulating component arranged in the cylinder body, wherein the left side and the right side of the cylinder body are correspondingly provided with an air inlet pipe joint and an air outlet pipe joint, the air inlet pipe joint and the air outlet pipe joint are correspondingly connected with buried gas pipelines at two sides through an air inlet ball valve and an air outlet ball valve, the upper end and the lower end of the cylinder body are correspondingly provided with an upper sealing plate and a lower sealing plate, the upper sealing plate is provided with a mounting hole, and an annular upper bracket is fixed at the position of the upper side of the upper sealing plate; the inner cavity of the barrel is divided into an air inlet cavity and an air outlet cavity by a baffle plate assembly, the baffle plate assembly comprises a lower baffle plate, an upper baffle plate and a vertical baffle plate, the lower baffle plate is horizontally arranged and is positioned at the lower side of an air inlet pipe joint, the lower baffle plate is provided with an air vent communicated with the air inlet cavity and the air outlet cavity, an annular lower support seat is fixed at the position, corresponding to the air vent, of the upper side of the lower baffle plate, the upper baffle plate is horizontally arranged and is positioned at the upper side of the air outlet pipe joint, and the upper end and the lower end of the vertical baffle plate are; the pressure regulating subassembly includes that vertical voltage regulator and interval set up in the blind plate of voltage regulator upside, connects through a plurality of pull rod devices along circumference distribution between voltage regulator and the blind plate, and the lower extreme of voltage regulator clamps in lower bracket and is equipped with seal structure down between the two, and the blind plate clamps in last bracket and is equipped with seal structure between the two.

Furthermore, the utility model relates to a bury ground pressure regulating device, wherein, the hole of lower bracket includes first macropore and the first aperture that distributes from top to bottom, and the junction of first macropore and first aperture forms first ring platform, and first ring platform is equipped with first annular along circumference, installs the first sealing ring that unilateral cross-section is the rectangle in the first annular; the lower end of the pressure regulator is positioned in a first large hole of the lower bracket, a first sealing groove is arranged on the peripheral wall of the lower end of the pressure regulator, and a first sealing ring with a circular unilateral section is arranged in the first sealing groove; the lower sealing structure is a first ring groove, a first sealing ring, a first sealing groove and a first sealing ring.

Furthermore, the utility model relates to a buried pressure regulating device, wherein, the perisporium of first macropore passes through first conical surface transitional coupling with first ring platform, the lower extreme of voltage regulator is equipped with the first pyramis with the laminating of first conical surface, leaves the clearance between the bottom of voltage regulator and the first ring platform; the opening of the first ring groove is trumpet-shaped.

Furthermore, the utility model relates to a bury ground pressure regulating device, wherein, the hole of upper bracket includes second macropore and the second aperture that distributes from top to bottom, and the junction of second macropore and second aperture forms the second ring platform, and the second ring platform is equipped with the second annular along circumference, installs the second sealing ring that unilateral cross-section is the rectangle in the second annular; the blind plate is positioned in a second large hole of the upper bracket, a second sealing groove is formed in the peripheral wall of the blind plate, and a second sealing ring with a circular single-side section is installed in the second sealing groove; the upper sealing structure is a second annular groove, a second sealing ring, a second sealing groove and a second sealing ring.

Furthermore, the utility model relates to a bury ground pressure regulating device, wherein, the perisporium of second macropore passes through second conical surface transitional coupling with second circular platform, the blind plate is equipped with the second cone portion that laminates with the second conical surface, leaves the clearance between the bottom of blind plate and the second circular platform; the opening of the second ring groove is trumpet-shaped.

Further, the utility model relates to a buried pressure regulating device, wherein, the lower side of the blind plate is fixed with a cylindrical connecting frame, and the lower end of the connecting frame is provided with a connecting flange; the pull rod device comprises a pull rod, the lower end of the pull rod is fixedly connected with the pressure regulator, the upper end of the pull rod penetrates through the connecting flange and is rotatably provided with a limiting nut, a spring seat is arranged in the middle of the pull rod, and a pre-tightening spring sleeved on the pull rod is arranged between the spring seat and the connecting flange.

Further, the utility model relates to a bury ground pressure regulating device, wherein, the first cover of pressure regulator is equipped with the support ring that adopts the rubber preparation, is equipped with the cartridge filter between support ring and the blind plate, and the first of cartridge filter is in the link.

Further, the utility model relates to a buried pressure regulating device, wherein, the shut-off valve is installed on the blind plate, the lower extreme of the valve rod of shut-off valve is fixed with the adaptor that the cross-section is T style of calligraphy, and the lower extreme of adaptor is installed and is sealed the dish, and the downside of sealing the dish inlays and is equipped with the first sealed pad that corresponds with the periphery of voltage regulator upper port, and the sealing dish is equipped with the shoulder hole along the axis; the lower end of the adapter is provided with a conical head and extends into a stepped hole of the plugging disc, a locking ring of a check ring is arranged in the stepped hole of the plugging disc on the upper side of the conical head, an extrusion spring sleeved on the adapter is arranged between the check ring and the conical head, and a second sealing gasket is arranged in the stepped hole of the plugging disc on the lower side of the conical head; and a power-assisted spring sleeved around the valve rod is further arranged between the valve body of the cut-off valve and the adapter, and a spring-stabilizing pipe is sleeved between the power-assisted spring and the valve rod.

Further, the utility model relates to a bury ground regulator, wherein, be equipped with manometer and differential pressure transmitter on the blind plate, go up and be equipped with the bleeding valve on the shrouding, the bleeding valve is through bleeding pipe and outlet duct articulate, goes up still sealed being fixed with the protective housing on the shrouding.

The utility model relates to a bury ground pressure regulating device compares with prior art, has following advantage: the utility model is provided with a cylinder body and a pressure regulating component arranged in the cylinder body, an air inlet pipe joint and an air outlet pipe joint are correspondingly arranged at the left side and the right side of the cylinder body, the air inlet pipe joint and the air outlet pipe joint are correspondingly connected with buried gas pipelines at two sides through an air inlet ball valve and an air outlet ball valve, an upper sealing plate and a lower sealing plate are correspondingly arranged at the upper end and the lower end of the cylinder body, the upper sealing plate is provided with a mounting hole, and a fixed and annular upper bracket is arranged at the position, corresponding to the mounting hole, at the upper side of; the inner cavity of the cylinder is divided into an air inlet cavity and an air outlet cavity by a baffle plate assembly, the baffle plate assembly comprises a lower baffle plate, an upper baffle plate and a vertical baffle plate, the lower baffle plate is horizontally arranged and is positioned at the lower side of an air inlet pipe joint, the lower baffle plate is provided with an air vent communicated with the air inlet cavity and the air outlet cavity, a fixed annular lower bracket is arranged at the position, corresponding to the air vent, of the upper side of the lower baffle plate, the upper baffle plate is horizontally arranged and is positioned at the upper side of an air outlet pipe joint, and the upper end and the lower end of the vertical baffle plate are correspondingly connected with the; the pressure regulating subassembly includes vertical voltage regulator and the blind plate that the interval set up in the voltage regulator upside, lets connect through a plurality of pull rod devices along circumference distribution between voltage regulator and the blind plate, makes the lower extreme of voltage regulator clamp and adorn in lower bracket and set up seal structure down between the two, makes the blind plate clamp and adorn in last bracket and set up seal structure between the two. Therefore, the buried voltage regulating device with compact structure, convenient assembly and disassembly, reliable sealing and strong adaptability is formed. In practical application, will the utility model discloses a bury ground pressure regulating device vertically and bury in the underground to make inlet pipe joint and outlet duct connect correspond with the buried gas pipeline connection of both sides, loop through inlet pipe joint, admit air chamber, pressure regulator on the gas port, the pressure regulator under the port, go out the in-process that the chamber and outlet duct connect, can realize pressure regulating, steady voltage purpose through the control voltage regulator. The utility model discloses a set up baffle subassembly and separate into the air inlet chamber with the inner chamber of barrel and go out the air cavity, can make air inlet pipe joint and outlet duct connect in same horizontal plane, and can be according to burying the random height-adjusting of depth, can effectively reduce regulator's vertical dimension on the one hand, reduce and bury ground construction volume, on the other hand need not adopt the elevation of elbow adjustment air inlet pipe joint and outlet duct joint, has reduced the installation degree of difficulty, has strengthened the adaptability to burying ground gas pipeline. And simultaneously, the utility model discloses a set up upper bracket and lower bracket to the pressure regulating subassembly that the setting comprises voltage regulator, blind plate and pull rod device combination, only need wholly clamp voltage regulator lower extreme and blind plate correspondence during the installation in lower bracket and upper bracket, can realize the reliable of relevant position through lower seal structure and upper seal structure and seal, improved the security, and have easy operation, dismouting, maintenance convenient characteristics.

The buried voltage regulating device of the present invention will be described in further detail with reference to the following embodiments shown in the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of the buried pressure regulating device of the present invention;

FIG. 2 is an enlarged view of a portion of the portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1 at position B;

FIG. 4 is an enlarged view of a portion of FIG. 1 at position C;

FIG. 5 is an enlarged view of a portion of FIG. 1 at position D;

fig. 6 is a cross sectional view of an upper bracket of the buried voltage regulating device of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at position E;

fig. 8 is a cross sectional view of a lower bracket of the buried voltage regulating device of the present invention;

fig. 9 is a partial enlarged view of the position F in fig. 8.

Detailed Description

It should be noted that, in the present invention, the terms of upper, lower, left, right, front, rear, etc. are only described according to the accompanying drawings, so as to facilitate understanding, and are not intended to limit the technical solution and the scope of the present invention.

As shown in fig. 1 to 9 the utility model relates to a concrete implementation of buried pressure regulating device, including barrel 1 and the pressure regulating subassembly of installing in barrel 1. The left side and the right side of the cylinder body 1 are correspondingly provided with an air inlet pipe joint 11 and an air outlet pipe joint 12, the air inlet pipe joint and the air outlet pipe joint are correspondingly connected with buried gas pipelines on two sides through an air inlet ball valve and an air outlet ball valve, so that air paths on two sides can be cut off through the air inlet ball valve 111 and the air outlet ball valve 121 when needed. An upper sealing plate 13 and a lower sealing plate 14 are correspondingly arranged at the upper end and the lower end of the cylinder 1, the upper sealing plate 13 is provided with a mounting hole, and a fixed annular upper bracket 2 is arranged at the position, corresponding to the mounting hole, of the upper side of the upper sealing plate 13. The inner cavity of the cylinder body 1 is divided into an air inlet cavity and an air outlet cavity by a baffle plate component. The baffle plate assembly specifically comprises a lower baffle plate 15, an upper baffle plate 16 and a vertical baffle plate 17, the lower baffle plate 15 is horizontally arranged and is positioned at the lower side of the air inlet pipe joint 11, the lower baffle plate 15 is provided with a vent hole for communicating the air inlet cavity and the air outlet cavity, and a fixed annular lower support seat 3 is arranged at the position, corresponding to the vent hole, on the upper side of the lower baffle plate 15; the upper baffle 16 is horizontally arranged and positioned at the upper side of the air outlet pipe joint 12, and the upper end and the lower end of the vertical baffle 17 are correspondingly connected with the upper baffle 16 and the lower baffle 15. The pressure regulating subassembly specifically includes vertical voltage regulator 4 and the blind plate 5 of interval setting at 4 upsides of voltage regulator, makes between voltage regulator 4 and the blind plate 5 connect through a plurality of pull rod device 6 along circumference distribution. The lower end of the pressure regulator 4 is snap fitted into the lower bracket 3 with a lower seal structure therebetween, and the blind plate 5 is snap fitted into the upper bracket 2 with an upper seal structure therebetween.

Through the structure arrangement, the buried voltage regulating device with compact structure, convenient assembly and disassembly, reliable sealing and strong adaptability is formed. In practical application, will the utility model discloses a bury ground pressure regulating device vertically and bury in the underground to make the inlet tube connect 11 and outlet duct connect 12 correspond with the buried gas pipe connection of both sides, loop through inlet tube joint 11, admit air chamber, the last port of voltage regulator 4, the lower port of voltage regulator 4, go out the in-process of gas chamber and outlet duct joint 12 at the gas, can realize pressure regulating, steady voltage purpose through control voltage regulator 4. The utility model discloses a set up baffle subassembly and separate into the chamber of admitting air and go out the air cavity with the inner chamber of barrel 1, can make intake pipe connector 11 and outlet duct joint 12 be located same horizontal plane, and can be according to burying the arbitrary height-adjusting of depth, can effectively reduce regulator's vertical dimension on the one hand, reduce and bury ground construction volume, on the other hand need not adopt elbow adjustment intake pipe connector 11 and outlet duct joint 12's elevation, has reduced the installation degree of difficulty, has strengthened the adaptability to burying ground gas pipeline. And simultaneously, the utility model discloses a set up upper bracket 2 and lower bracket 3 to the setting is by the pressure regulating subassembly that voltage regulator 4, blind plate 5 and the combination of pull rod device 6 constitute, only needs whole lower extreme and the blind plate 5 of voltage regulator 4 to correspond to clamp in lower bracket 3 and upper bracket 2 during the installation, and reliable sealed through lower seal structure and last seal structure can realize the relevant position has improved the security, and has easy operation, dismouting, maintains convenient characteristics. It should be noted that, in order to guarantee the validity of the inner cavity of the barrel 1 separated by the baffle assembly, the lower baffle 15, the upper baffle 16 and the vertical baffle 17 should be respectively connected with the barrel 1 in a sealing manner, and the upper bracket 2 and the lower bracket 3 correspond to and should be connected with the upper sealing plate 13 and the lower baffle 15 in a sealing manner, the utility model discloses adopt the welding mode usually.

As an optimized scheme, in the present embodiment, the inner hole of the lower seat 3 adopts a structure including a first large hole 31 and a first small hole 32 which are distributed vertically, so that a first annular table 33 is formed at a connection position of the first large hole 31 and the first small hole 32, a first annular groove 34 is arranged on the first annular table 33 along the circumferential direction, and a first sealing ring 35 with a rectangular single-side cross section is installed in the first annular groove 34. The lower end of the pressure regulator 4 is clamped in the first large hole 31 of the lower bracket 3, a first sealing groove is arranged on the peripheral wall of the lower end of the pressure regulator 4, and a first sealing ring 41 with a circular unilateral section is arranged in the first sealing groove. The lower sealing structure is a three-dimensional sealing structure formed by combining the first ring groove 34, the first sealing ring 35, the first sealing groove and the first sealing ring 41, wherein the first ring groove 34 and the first sealing ring 35 are plane sealing structures, and the first sealing groove and the first sealing ring 41 are vertical sealing structures. The structural arrangement can effectively improve the connection stability and enhance the sealing reliability and safety. Meanwhile, in the present embodiment, the peripheral wall of the first large hole 31 and the first annular platform 33 are transitionally connected by the first conical surface 36, the lower end of the pressure regulator 4 is provided with the first conical portion 42 attached to the first conical surface 36, a gap is left between the bottom of the pressure regulator 4 and the first annular platform 33, and the opening of the first annular groove 34 is configured to have a trumpet-shaped cross section. The structure arrangement can improve the joint tightness between the pressure regulator 4 and the lower support 3, and the purpose of centering and positioning can be realized when the pressure regulating assembly is installed through the matching of the first conical part 42 and the first conical surface 36, so that the convenience of operation is improved; when the first sealing ring 35 is pushed down by the pressure regulator 4, the horn-shaped opening through the first ring groove 34 can expand the first sealing ring 35 to two sides, so that the adaptability of the first sealing ring 35 is improved, the periphery of the first sealing ring 35 can be tightly attached to the pressure regulator 4, and the sealing reliability is enhanced. In practical applications, the present invention generally allows the first ring groove 34 and the first sealing ring 35 to be disposed more than twice.

Similarly, in the present embodiment, the inner hole of the upper bracket 2 also adopts a structure including the second large hole 21 and the second small hole 22 distributed vertically, so that the joint of the second large hole 21 and the second small hole 22 forms a second annular table 23, a second annular groove 24 is arranged on the second annular table 23 along the circumferential direction, and a second sealing ring 25 with a rectangular single-side cross section is installed in the second annular groove 24. The blind plate 5 is clamped in the second large hole 21 of the upper bracket 2, a second sealing groove is arranged on the peripheral wall of the blind plate 5, and a second sealing ring 51 with a round single-side cross section is arranged in the second sealing groove. The upper sealing structure is a three-dimensional sealing structure formed by combining the second ring groove 24, the second sealing ring 25, the second sealing groove and the second sealing ring 51, wherein the second ring groove 24 and the second sealing ring 25 are plane sealing structures, and the second sealing groove and the second sealing ring 51 are vertical sealing structures. This arrangement also improves the stability of the connection and enhances the reliability and safety of the seal. Similarly, in the present embodiment, the peripheral wall of the second large hole 21 and the second annular platform 23 are transitionally connected by the second tapered surface 26, the blind plate 5 is provided with the second tapered portion 52 attached to the second tapered surface 26, a gap is left between the bottom of the blind plate 5 and the second annular platform 23, and the opening of the second annular groove 24 is configured to have a trumpet-shaped cross section. Through the matching of the second conical part 52 and the second conical surface 26, automatic centering and positioning are realized when the pressure regulating assembly is installed, and the convenience of operation is improved; the horn-shaped opening structure of the second ring groove 24 improves the adaptability of the second sealing ring 25, can ensure that the periphery of the second sealing ring 25 is tightly attached to the pressure regulator 4, and enhances the sealing reliability. It should be noted that, in order to ensure the stability and safety of the structure in practical applications, a locking ring structure is usually further provided between the blind plate 5 and the upper bracket 2, and the locking ring structure is a mature technology in the field and is not described herein again.

In the present invention, as a specific embodiment, a tubular connecting frame 53 is fixed to the lower side of the blind plate 5, and a connecting flange 54 is provided at the lower end of the connecting frame 53. The pull rod device 6 adopts the following structure: including pull rod 61, let the lower extreme and the regulator 4 fixed connection of pull rod 61, let the upper end of pull rod 61 pass flange 54 and spiral shell and adorn stop nut, set up spring holder 62 in the middle part of pull rod 61, set up the pretension spring 63 of cover on pull rod 61 between spring holder 62 and flange 54. The pull rod device 6 with the structure has the advantages of convenience in adjustment and strong adaptability, and the reliability of the lower sealing structure is enhanced by applying downward pressure on the pressure regulator 4 through the pre-tightening spring 63.

In the present embodiment, as an optimized solution, a support ring 7 made of rubber is fitted to the upper half of the pressure regulator 4, a filter cartridge 8 is disposed between the support ring 7 and the blind plate 5, and the upper half of the filter cartridge 8 is positioned in the connecting frame 53. Realized the filtration to the gas through setting up cartridge filter 8, strengthened pressure regulating device's function, the elastic action through support ring 7 has improved cartridge filter 8's adaptability, has guaranteed cartridge filter 8's stability through link 53. Meanwhile, according to the specific embodiment, the shut-off valve 9 is mounted on the blind plate 5, the adapter 92 with the T-shaped cross section is fixed at the lower end of the valve rod 91 of the shut-off valve 9, the plugging disc 93 is mounted at the lower end of the adapter 92, the first sealing pad 931 corresponding to the periphery of the upper port of the pressure regulator 4 is embedded in the lower side surface of the plugging disc 93, and the stepped hole is formed in the plugging disc 93 along the axis. The lower end of the adaptor 92 is provided with a conical head 921 and extends into a stepped hole of the plugging disc 93, a lock ring 933 of a retainer ring 932 is arranged in the stepped hole of the plugging disc 93 on the upper side of the conical head 921, an extrusion spring 94 sleeved on the adaptor 92 is arranged between the retainer ring 932 and the conical head 921, a second sealing gasket 934 is arranged in the stepped hole of the plugging disc 93 on the lower side of the conical head 921, and the tip of the conical head 921 is pressed in an inner cavity of the second sealing gasket 934. In addition, an assist spring 95 sleeved around the valve rod 91 is arranged between the valve body of the shut-off valve 9 and the adaptor 92, and a spring stabilizing pipe 96 is sleeved between the assist spring 95 and the valve rod 91. When the pressure of the air outlet exceeds the set pressure value of the shut-off valve 9, the shut-off valve 9 is actuated and the upper port of the pressure regulator 4 is sealed by the plugging disc 93, so that the technical purpose of automatic cut-off can be realized, the safety of downstream equipment is effectively protected, and the safety is enhanced. By arranging the structure that the conical head 921, the extrusion spring 94, the retainer ring 932, the lock ring 933 and the second sealing gasket 934 are matched, on the basis of ensuring the connection sealing performance, the adaptability of the sealing disc 93 to the upper port of the pressure regulator 4 is improved, and the sealing reliability during sealing is ensured; the auxiliary force provided by the power spring 95 improves the action sensitivity of the shut-off valve 9 during plugging, and the stability of the power spring 95 is ensured through the spring stabilizing pipe 96.

It should be noted that, in practical application, the utility model generally arranges a pressure gauge and a differential pressure transmitter on the blind plate 5 so as to monitor the pressure regulating device; and set up the bleeding valve on the upper closing plate 13, and make the bleeding valve connect with the air outlet pipe joint 12 through the bleeding pipe, let out through the bleeding pipe and can effectively guarantee the security when the gas outlet pressure is too high. For protecting these components, the utility model discloses still sealed the fixed protective housing on last shrouding 13.

The above embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the present invention as defined by the claims.

Claims

1. A buried pressure regulating device comprises a barrel (1) and a pressure regulating assembly arranged in the barrel (1), and is characterized in that the left side and the right side of the barrel (1) are correspondingly provided with an air inlet pipe joint (11) and an air outlet pipe joint (12), the air inlet pipe joint (11) and the air outlet pipe joint (12) are correspondingly connected with buried gas pipelines at two sides through an air inlet ball valve (111) and an air outlet ball valve (121), the upper end and the lower end of the barrel (1) are correspondingly provided with an upper sealing plate (13) and a lower sealing plate (14), the upper sealing plate (13) is provided with a mounting hole, and an annular upper bracket (2) is fixed at the position, corresponding to the mounting hole, of the upper side of the upper sealing plate (13; the inner cavity of the barrel body (1) is divided into an air inlet cavity and an air outlet cavity through a baffle plate assembly, the baffle plate assembly comprises a lower baffle plate (15), an upper baffle plate (16) and a vertical baffle plate (17), the lower baffle plate (15) is horizontally arranged and is positioned at the lower side of an air inlet pipe joint (11), the lower baffle plate (15) is provided with vent holes communicated with the air inlet cavity and the air outlet cavity, an annular lower bracket (3) is fixed at the position, corresponding to the vent holes, of the upper side of the lower baffle plate (15), the upper baffle plate (16) is horizontally arranged and is positioned at the upper side of an air outlet pipe joint (12), and the upper end and the lower end of the vertical baffle plate (17) are correspondingly connected with the upper baffle plate (; the pressure regulating subassembly includes that vertical voltage regulator (4) and interval set up in blind plate (5) of voltage regulator (4) upside, connects through a plurality of pull rod device (6) along circumference distribution between voltage regulator (4) and blind plate (5), and the lower extreme of voltage regulator (4) clamps and is equipped with seal structure down in lower bracket (3) and between the two, and blind plate (5) clamp and are equipped with seal structure in last bracket (2) and between the two.

2. The buried pressure regulating device according to claim 1, wherein the inner hole of the lower bracket (3) comprises a first large hole (31) and a first small hole (32) which are distributed up and down, a first annular table (33) is formed at the joint of the first large hole (31) and the first small hole (32), a first annular groove (34) is formed in the first annular table (33) along the circumferential direction, and a first sealing ring (35) with a rectangular single-side cross section is installed in the first annular groove (34); the lower end of the pressure regulator (4) is positioned in a first large hole (31) of the lower bracket (3), a first sealing groove is arranged on the peripheral wall of the lower end of the pressure regulator (4), and a first sealing ring (41) with a circular unilateral section is arranged in the first sealing groove; the lower sealing structure is a first ring groove (34), a first sealing ring (35), a first sealing groove and a first sealing ring (41).

3. The buried voltage regulating device according to claim 2, wherein the peripheral wall of the first large hole (31) is in transitional connection with the first annular table (33) through a first conical surface (36), the lower end of the voltage regulator (4) is provided with a first conical part (42) attached to the first conical surface (36), and a gap is reserved between the bottom of the voltage regulator (4) and the first annular table (33); the opening of the first ring groove (34) is trumpet-shaped.

4. The buried pressure regulating device according to claim 1, wherein the inner hole of the upper bracket (2) comprises a second large hole (21) and a second small hole (22) which are distributed up and down, a second ring platform (23) is formed at the joint of the second large hole (21) and the second small hole (22), a second ring groove (24) is formed in the second ring platform (23) along the circumferential direction, and a second sealing ring (25) with a rectangular single-side section is installed in the second ring groove (24); the blind plate (5) is positioned in the second large hole (21) of the upper bracket (2), a second sealing groove is formed in the peripheral wall of the blind plate (5), and a second sealing ring (51) with a circular single-side section is installed in the second sealing groove; the upper sealing structure is a second ring groove (24), a second sealing ring (25), a second sealing groove and a second sealing ring (51).

5. The buried voltage regulating device according to claim 4, wherein the peripheral wall of the second large hole (21) is in transitional connection with the second annular table (23) through a second taper surface (26), the blind plate (5) is provided with a second taper part (52) attached to the second taper surface (26), and a gap is reserved between the bottom of the blind plate (5) and the second annular table (23); the opening of the second ring groove (24) is trumpet-shaped.

6. The buried voltage regulating device according to claim 1, characterized in that a cylindrical connecting frame (53) is fixed on the lower side of the blind plate (5), and a connecting flange (54) is arranged at the lower end of the connecting frame (53); the pull rod device (6) comprises a pull rod (61), the lower end of the pull rod (61) is fixedly connected with the pressure regulator (4), the upper end of the pull rod (61) penetrates through the connecting flange (54) and is provided with a limiting nut in a rotating mode, the middle of the pull rod (61) is provided with a spring seat (62), and a pre-tightening spring (63) sleeved on the pull rod (61) is arranged between the spring seat (62) and the connecting flange (54).

7. A buried voltage regulating device according to claim 6, characterized in that the upper half of the voltage regulator (4) is sleeved with a support ring (7) made of rubber, a filter cartridge (8) is arranged between the support ring (7) and the blind plate (5), and the upper half of the filter cartridge (8) is arranged in the connecting frame (53).

8. The buried pressure regulating device according to claim 1, wherein a stop valve (9) is mounted on the blind plate (5), an adapter (92) with a T-shaped cross section is fixed at the lower end of a valve rod (91) of the stop valve (9), a plugging disc (93) is mounted at the lower end of the adapter (92), a first sealing gasket (931) corresponding to the periphery of an upper port of the pressure regulator (4) is embedded in the lower side surface of the plugging disc (93), and a stepped hole is formed in the plugging disc (93) along the axis; the lower end of the adaptor (92) is provided with a conical head (921) and extends into a stepped hole of the plugging disc (93), a lock ring (933) of a check ring (932) is installed in the stepped hole of the plugging disc (93) on the upper side of the conical head (921), an extrusion spring (94) sleeved on the adaptor (92) is arranged between the check ring (932) and the conical head (921), and a second sealing gasket (934) is installed in the stepped hole of the plugging disc (93) on the lower side of the conical head (921); an assisting spring (95) sleeved around the valve rod (91) is further arranged between the valve body of the cut-off valve (9) and the adaptor (92), and a spring stabilizing pipe (96) is sleeved between the assisting spring (95) and the valve rod (91).

9. A buried pressure regulating device according to any one of claims 1 to 8, characterized in that a pressure gauge and a differential pressure transmitter are arranged on the blind plate (5), a bleeding valve is arranged on the upper sealing plate (13), the bleeding valve is connected with the air outlet pipe joint (12) through a bleeding pipe, and a protective box is hermetically fixed on the upper sealing plate (13).