Direct acting type underground pressure regulating device

Abstract

The direct acting type underground pressure regulating device comprises a base, a cutting box, a pressure regulating box, an upper sealing plate and a protection box, the cutting box is divided into a first upper cavity and a first lower cavity through a first partition plate, an air inlet pipe is arranged on the left side of the cutting box, and the pressure regulating box is divided into a second upper cavity and a second lower cavity through a second partition plate; a communicating pipe communicating the first upper cavity and the second upper cavity is fixed between the first partition plate and the second partition plate, the end, located in the first upper cavity, of the communicating pipe is a cut-off valve port, vent holes distributed in the circumferential direction are formed in the first partition plate, and a valve seat is arranged on the second partition plate. A pressure regulating valve port communicated with the second upper cavity and the second lower cavity is formed in the top of the valve seat, a cut-off valve and a pressure regulator corresponding to the cut-off box and the pressure regulating box are installed on the upper sealing plate, the cut-off valve is provided with a cut-off valve clack matched with the cut-off valve port, and the pressure regulator is provided with a pressure regulating valve clack matched with the pressure regulating valve port. The device has the advantages of simple structure, low cost, stability and reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pressure regulating device, concretely relates to a directly acting type gas pressure regulating device buried in the ground. BACKGROUND

[0002] With the development of gas industry, the pressure regulating box gradually changes from the ground structure into the underground structure, and the underground pressure regulating box has the advantages of small noise and not occupying the ground space. Figure 1 The underground pressure regulating device with the medium pressure import end and the low pressure export end usually adopts the indirect action type pressure regulator, and its structure is shown in the figure, mainly including the pressure regulating box 1', the protection box 2', the blind plate cover 3', the axial flow pressure regulator 4', the commander 5', the cut-off valve 6' and the like. UTILITY MODEL CONTENTS

[0003] The utility model discloses a directly acting type underground pressure regulating device, which has the advantages of simple structure, low cost, stability and reliability and strong practicability.

[0004] In order to solve the above problems in the prior art, the utility model provides a directly acting type underground pressure regulating device, which comprises a base, a cut-off box and a pressure regulating box fixed side by side on the base, an upper sealing plate sealingly fixed to the upper end of the cut-off box and the pressure regulating box, a protection box arranged on the upper side of the upper sealing plate, a first lower cavity and a first upper cavity separated by a first partition plate in the cut-off box, an air inlet pipe arranged on the left side of the cut-off box and communicated with the first lower cavity, a second lower cavity and a second upper cavity separated by a second partition plate in the pressure regulating box, an air outlet pipe arranged on the right side of the pressure regulating box and communicated with the second lower cavity, a communication pipe sealingly fixed between the first partition plate and the second partition plate and communicated with the first upper cavity and the second upper cavity, an end of the communication pipe in the first upper cavity being a cut-off valve port, a plurality of air holes arranged on the first partition plate and peripherally distributed around the communication pipe, a valve seat in the shape of a cylinder arranged on the second partition plate, a top of the valve seat being provided with a pressure regulating valve port communicated with the second upper cavity and the second lower cavity, the upper sealing plate being provided with a cut-off valve and a pressure regulator corresponding to the cut-off box and the pressure regulating box, the cut-off valve comprising a cut-off valve body fixed to the upper sealing plate, a cut-off diaphragm arranged in the cut-off valve body, a cut-off valve rod connected to the cut-off diaphragm and extending into the cut-off box, a cut-off valve flap arranged at the lower end of the cut-off valve rod and matched with the cut-off valve port, the pressure regulator comprising a pressure regulating valve body fixed to the upper sealing plate, a pressure regulating diaphragm arranged in the pressure regulating valve body, a pressure regulating valve rod connected to the pressure regulating diaphragm and extending into the pressure regulating box, and a pressure regulating valve flap arranged at the lower end of the pressure regulating valve rod and matched with the pressure regulating valve port.

[0005] Further, the utility model discloses a direct action type underground pressure regulating device, wherein, the first upper cavity is equipped with the filter core corresponding extruding on the cut-off valve body and the first baffle from top to bottom, and the filter core is sleeved on the periphery of the cut-off valve port and the cut-off valve clack and is located at the inside position of the air hole.

[0006] Further, the utility model discloses a direct action type underground pressure regulating device, wherein, the cut-off membrane separates the inner cavity of the cut-off valve body into the first upper air chamber and the first lower air chamber, the pressure regulating membrane separates the inner cavity of the pressure regulating valve body into the second upper air chamber and the second lower air chamber, the first upper air chamber and the second upper air chamber are communicated with the atmosphere, and the first lower air chamber and the second lower air chamber are connected with the air outlet pipe through the pressure lead pipe.

[0007] Further, the utility model discloses a direct action type underground pressure regulating device, wherein, the protection box is equipped with the diffusion valve, the diffusion valve is connected with the air outlet pipe through the diffusion inlet pipe, and the diffusion valve is connected with the flame arrester on the top of the diffusion tower through the diffusion outlet pipe.

[0008] Further, the utility model discloses a direct action type underground pressure regulating device, wherein, the first baffle is fixed with the positioning ring at the inside of the filter core, the lower side surface of the cut-off valve clack is embedded with the first sealing gasket corresponding to the cut-off valve port, the pressure regulating valve rod passes through the pressure regulating valve port, and the upper side surface of the pressure regulating valve clack is embedded with the second sealing gasket corresponding to the pressure regulating valve port.

[0009] Further, the utility model discloses a direct action type underground pressure regulating device, wherein, the pressure regulating valve body includes the upper cover and the lower cover connected through bolts, the upper cover is fixed with the sleeve, the top of the sleeve is equipped with the end cover, the lower cover is fixed with the connecting seat installed on the upper sealing plate, the outer edge of the pressure regulating membrane is extruded between the upper cover and the lower cover, the pressure regulating membrane is connected with the pressure regulating valve rod through the adapter, the upper side of the adapter is equipped with the balance spring, the upper end of the balance spring is extruded on the spring seat, and the spring seat upper side is equipped with the jacking rod installed on the end cover through the screw thread.

[0010] Further, the utility model discloses a direct action type underground pressure regulating device, wherein, the adapter includes the upper pressure disc and the lower pressure disc corresponding clamped on the upper side and the lower side of the pressure regulating membrane, and the fastener is passed through the upper pressure disc, the pressure regulating membrane and the lower pressure disc from bottom to top and is inverted T-shaped, the upper end of the fastener is installed with the fastening nut, the fastening nut and the upper pressure disc are equipped with the positioning block in the balance spring, the positioning sleeve is sleeved on the fastener of the lower side of the upper pressure disc, and the upper end of the pressure regulating valve rod is installed on the fastener through the screw thread.

[0011] Further, the utility model discloses a direct action type underground pressure regulating device, wherein the outer side of the pressure regulating valve stem is equipped with a guide sleeve, the upper end of the guide sleeve is equipped with an outwardly extending connecting part, the connecting part is equipped with air passing holes distributed in the circumferential direction, the connecting part is fixed with a connecting ring mounted on the lower cover through a screw, the positioning sleeve is in the connecting ring and is equipped with an auxiliary diaphragm between the two, the outer edge of the auxiliary diaphragm is pressed between the connecting part and the connecting ring, and the inner edge of the auxiliary diaphragm is pressed between the fastener and the positioning sleeve.

[0012] Compared with the prior art, the utility model discloses a direct action type underground pressure regulating device, which has the following advantages: the utility model discloses a direct action type underground pressure regulating device, wherein the outer side of the pressure regulating valve stem is equipped with a guide sleeve, the upper end of the guide sleeve is equipped with an outwardly extending connecting part, the connecting part is equipped with air passing holes distributed in the circumferential direction, the connecting part is fixed with a connecting ring mounted on the lower cover through a screw, the positioning sleeve is in the connecting ring and is equipped with an auxiliary diaphragm between the two, the outer edge of the auxiliary diaphragm is pressed between the connecting part and the connecting ring, and the inner edge of the auxiliary diaphragm is pressed between the fastener and the positioning sleeve.

[0013] The following describes in detail a direct-acting underground pressure regulating device of the present invention with reference to the embodiments shown in the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an existing indirect-acting underground pressure regulating device;

[0015] Figure 2 This is a schematic diagram of the structure of a direct-acting underground pressure regulating device according to the present invention;

[0016] Figure 3 for Figure 2 A magnified view of a portion of position A in the middle;

[0017] Figure 4 for Figure 2 A magnified view of the area at position B in the middle. Detailed Implementation

[0018] First, it should be noted that the directional terms such as up, down, left, right, front, and back mentioned in this utility model are only descriptions based on the accompanying drawings for ease of understanding, and are not intended to limit the technical solution or the scope of protection claimed in this utility model.

[0019] like Figures 2 to 4The utility model discloses a direct action type underground pressure regulating device's specific implementation mode, including base 1 and parallel fixed on the cut -off box 2 and pressure regulating box 3 of base 1, in the upper end of cut -off box 2 and pressure regulating box 3 sealed fixed upper seal plate 4, set up protection box 5 on the upside of upper seal plate 4. Let cut -off box 2 pass through first baffle 21 and divide into first upper cavity and first lower cavity, set up the air inlet pipe 22 of intercommunication with first lower cavity on the left side of cut -off box 2. Let pressure regulating box 3 pass through second baffle 31 and divide into second upper cavity and second lower cavity, set up the air outlet pipe 32 of intercommunication with second lower cavity on the right side of pressure regulating box 3. The intercommunication pipe 6 of intercommunication first upper cavity and second upper cavity is sealed fixed between first baffle 21 and second baffle 31, the end portion of intercommunication pipe 6 in first upper cavity is as cut -off valve port 61, set up the air hole 211 of distribution along the circumference on first baffle 21 and at the periphery of intercommunication pipe 6, set up the valve seat 33 of barrel on second baffle 31, and set up the pressure regulating valve port 34 of intercommunication second upper cavity and second lower cavity on the top of valve seat 33. Meanwhile, install cut -off valve 7 and pressure regulator 8 corresponding with cut -off box 2 and pressure regulating box 3 on upper seal plate 4, wherein, cut -off valve 7 includes the cut -off valve body 71 fixed on upper seal plate 4, is equipped with cut -off diaphragm (not shown in the drawing) in cut -off valve body 71, cut -off diaphragm is connected with the cut -off valve stem 72 of the cut -off box 2, and the lower end of cut -off valve stem 72 is equipped with the cut -off valve flap 73 of cooperation with cut -off valve port 61, pressure regulator 8 includes the pressure regulating valve body 81 fixed on upper seal plate 4, is equipped with pressure regulating diaphragm 82 in pressure regulating valve body 81, pressure regulating diaphragm 82 is connected with the pressure regulating valve stem 83 of the pressure regulating box 3, and the lower end of pressure regulating valve stem 83 is equipped with the pressure regulating valve flap 84 of cooperation with pressure regulating valve port 34.

[0020] The above setting forms a direct action type underground pressure regulating device which is simple in structure, low in cost, stable and reliable, and high in practicability. In actual application, the pressure regulating device is connected in series in the gas pipeline buried in the ground through the gas inlet pipe 22 and the gas outlet pipe 32, when the gas flows through the gas inlet pipe 22, the first upper cavity, the first lower cavity, the communication pipe 6, the second upper cavity, the second lower cavity and the gas outlet pipe 32 in sequence, the cut-off valve 7 is used to control the cut-off valve flap 73 to seal the cut-off valve port 61, so that the cut-off purpose is achieved, and the pressure regulator 8 is used to control the distance between the pressure regulating valve flap 84 and the pressure regulating valve port 34, so that the pressure regulating purpose is achieved. The base 1 is arranged, the cut-off box 2, the pressure regulating box 3 and the protection box 5 are fixed on the base 1, so that an integrated pry structure is formed, the integrated pry structure can be integrally transported and disassembled, and the operation convenience is improved. The lower membrane cavity of the pressure regulator 8 is communicated with the gas outlet pipe 32, the pressure of the gas outlet pipe is directly used to control the action of the pressure regulating membrane 82, the pressure regulating valve rod 83 and the pressure regulating valve flap 84 for pressure regulating, compared with an indirect action type pressure regulator, the commander is saved, the structure is simplified, the cost is reduced, the small flow surge phenomenon is avoided, and the stability and reliability are improved. It should be noted that the cut-off valve and the pressure regulator are common devices in the field, and the structure and principle thereof are known to technicians. The first upper gas chamber and the second upper gas chamber are communicated with the atmosphere, and the first lower gas chamber and the second lower gas chamber are connected with the gas outlet pipe 32 through the pressure lead pipe 321.

[0021] As an optimization scheme, the filter element 9 is arranged in the first upper cavity and is correspondingly extruded on the cut-off valve body 71 and the first partition plate 21, and the filter element 9 is sleeved on the periphery of the cut-off valve port 61 and the cut-off valve flap 73 and is located at the inner side of the air hole 211. The filter element 9 can filter out impurities in the gas, ensures the cleanliness of the gas, and improves the functionality. As an optimization scheme, the diffusion valve 322 is arranged in the protection box 5, the diffusion valve 322 is connected with the gas outlet pipe 32 through the diffusion inlet pipe 323, and the diffusion valve 322 is connected with the flame arrester at the top of the diffusion tower through the diffusion outlet pipe 324. The structure can diffuse the gas in the gas outlet pipe with abnormal pressure through the diffusion valve 322, and the safety and reliability are improved. Meanwhile, the positioning ring 212 located at the inner side of the filter element 9 is fixed on the first partition plate 21, the first sealing gasket 731 corresponding to the cut-off valve port 61 is embedded on the lower side of the cut-off valve flap 73, so that the sealing reliability of the cut-off valve 7 in the cut-off state is ensured, the pressure regulating valve rod 83 passes through the pressure regulating valve port 34, the second sealing gasket 841 corresponding to the pressure regulating valve port 34 is embedded on the upper side of the pressure regulating valve flap 84, so that the sealing reliability of the pressure regulator 8 in the closed state is ensured, and the safety and practicability are improved.

[0022] As a specific embodiment, the utility model discloses the pressure regulating valve body 81 is provided with the upper cover 811 and the lower cover 812 of bolt connection, wherein, the upper cover 811 is fixed with sleeve 813, and the top of sleeve 813 is equipped with end cap 814, and the lower cover 812 is fixed with the connecting seat 815 installed on the upper sealing plate 4. Let the outer edge of pressure regulating diaphragm 82 extrude between upper cover 811 and lower cover 812, let pressure regulating diaphragm 82 connect with pressure regulating valve stem 83 through adapter, set balance spring 85 on the upside of adapter, make the upper end of balance spring 85 extrude on spring seat 86, and set top rod 87 on the upside of spring seat 86 through the threaded installation on end cap 814. This setting has the characteristics of simple structure, convenient dismounting, quick adjustment, and only need to rotate top rod 87 to control the length and elastic force of balance spring 85, and then realize the technical purpose of controlling the pressure regulating size. As a specific embodiment, the utility model makes the adapter adopt the following structure: including the upper pressure disc 821 and the lower pressure disc 822 corresponding to the upper side and the lower side of pressure regulating diaphragm 82, and the fastener 823 is passed through the upper pressure disc 821, pressure regulating diaphragm 82 and lower pressure disc 822 from bottom to top and is inverted T-shaped, installs fastening nut 824 on the upper end of fastener 823, sets the positioning block 825 in balance spring 85 between fastening nut 824 and upper pressure disc 821, sets the positioning sleeve 826 on the fastener 823 of the lower side of upper pressure disc 821, wherein, the upper end of pressure regulating valve stem 83 is installed on the fastener 823 through the thread. This setting has the characteristics of simple structure, convenient dismounting, stable connection. At the same time, the outer side of the specific embodiment of the utility model is provided with guide sleeve 88 to improve the action stability of pressure regulating valve stem 83, wherein, the upper end of guide sleeve 88 is equipped with the connecting part 881 extending outward, the connecting part 881 is equipped with the air hole 882 distributed along the circumference, the connecting part 881 is fixed with the connecting ring 89 installed on the lower cover 812 through the screw, the positioning sleeve 826 is in the connecting ring 89 and is equipped with auxiliary diaphragm 810 between the two, the outer edge of auxiliary diaphragm 810 extrudes between connecting part 881 and connecting ring 89, and the inner edge of auxiliary diaphragm 810 extrudes between fastener 823 and positioning sleeve 826. This structure improves the smoothness of pressure regulating action by setting auxiliary diaphragm 810. In practical application, the utility model usually makes guide sleeve 88 and pressure regulating valve port 34 integral to simplify the structure, and sets through -hole at the connecting place of guide sleeve 88 and pressure regulating valve port 34 to ventilate.

[0023] The above embodiment only describes the preferred embodiment of the utility model, and does not limit the protection range of the utility model, and various deformations of the technical scheme of the utility model made by the person skilled in the art without departing from the design concept of the utility model should fall within the protection range determined by the claims of the utility model.

Claims

1. A direct-acting underground pressure regulating device, characterized in that, The utility model provides a cut -out valve and pressure regulator, including base (1) and side -by -side fixed base (1) cut -out box (2) and pressure regulating box (3), and the upper end of cut -out box (2) and pressure regulating box (3) is sealedly fixed with upper seal plate (4), and the upper side of upper seal plate (4) is equipped with protection box (5), and the cut -out box (2) is divided into first upper chamber and first lower chamber by first partition (21), and the left side of cut -out box (2) is equipped with the air inlet pipe (22) of first lower chamber intercommunication, the pressure regulating box (3) is divided into second upper chamber and second lower chamber by second partition (31), and the right side of pressure regulating box (3) is equipped with the air outlet pipe (32) of second lower chamber intercommunication, and the first partition (21) and second partition (31) are sealedly fixed with the communication pipe (6) of the intercommunication of first upper chamber and second upper chamber, and the end in first upper chamber of communication pipe (6) is cut -out valve port (61), and the first partition (21) is equipped with the air hole (211) of distribution in the periphery of communication pipe (6) on, and the second partition (31) is equipped with the valve seat (33) of cylinder, and the top of valve seat (33) is equipped with the pressure regulating valve port (34) of the intercommunication of second upper chamber and second lower chamber, and the upper seal plate (4) is installed with cut -out valve (7) and pressure regulator (8) corresponding cut -out box (2) and pressure regulating box (3), and cut -out valve (7) includes the cut -out valve body (71) of fixed in upper seal plate (4), and the cut -out valve body (71) is equipped with cut -off diaphragm, and cut -off diaphragm is connected with the cut -out valve stem (72) of the cut -out box (2) of extension, and the lower end of cut -out valve stem (72) is equipped with the cut -out valve flap (73) of the cooperation of cut -out valve port (61), and pressure regulator (8) includes the pressure regulating valve body (81) of fixed in upper seal plate (4), and the pressure regulating valve body (81) is equipped with pressure regulating diaphragm (82), and pressure regulating diaphragm (82) is connected with the pressure regulating valve stem (83) of the pressure regulating box (3) of extension, and the lower end of pressure regulating valve stem (83) is equipped with the pressure regulating valve flap (84) of the cooperation of pressure regulating valve port (34).

2. A direct acting underground pressure regulating device according to claim 1, characterised in that The first upper chamber is equipped with filter core (9) corresponding extrusion on cut -out valve body (71) and first partition (21) in up and down end, and filter core (9) is in the position of the outside of cut -out valve port (61) and cut -out valve flap (73) and is at the inside of air hole (211) position.

3. A direct acting underground pressure regulating device according to claim 2, characterised in that The cut -off diaphragm divides the inner chamber of cut -out valve body (71) into first upper air chamber and first lower air chamber, the pressure regulating diaphragm (82) divides the inner chamber of pressure regulating valve body (81) into second upper air chamber and second lower air chamber, first upper air chamber and second upper air chamber are communicated with the atmosphere, and first lower air chamber and second lower air chamber are connected with air outlet pipe (32) through pressure lead pipe (321).

4. A direct acting underground pressure regulating device according to claim 3, characterised in that The protection box (5) is equipped with diffusion valve (322), diffusion valve (322) is connected with air outlet pipe (32) through diffusion inlet pipe (323), and diffusion valve (322) is connected with flame arrester of diffusion tower top through diffusion outlet pipe (324).

5. A direct-acting subsurface pressure regulating device according to claim 4, wherein, The first partition (21) is fixed with a positioning ring (212) inside the filter core (9), the lower side of the cut-off valve disc (73) is embedded with a first sealing gasket (731) corresponding to the cut-off valve port (61), the pressure regulating valve rod (83) passes through the pressure regulating valve port (34), and the upper side of the pressure regulating valve disc (84) is embedded with a second sealing gasket (841) corresponding to the pressure regulating valve port (34).

6. A direct acting subsurface pressure regulating device according to claim 5, wherein, The pressure regulating valve body (81) comprises an upper cover (811) and a lower cover (812) connected by bolts, the upper cover (811) is fixed with a sleeve (813), the top of the sleeve (813) is provided with an end cover (814), the lower cover (812) is fixed with a connecting seat (815) mounted on the upper sealing plate (4), the outer edge of the pressure regulating diaphragm (82) is extruded between the upper cover (811) and the lower cover (812), the pressure regulating diaphragm (82) is connected with the pressure regulating valve rod (83) through an adapter, the upper side of the adapter is provided with a balance spring (85), the upper end of the balance spring (85) is extruded on a spring seat (86), and the upper side of the spring seat (86) is provided with a top rod (87) installed on the end cover (814) through threads.

7. A direct acting subsurface pressure regulating device according to claim 6, wherein, The adapter comprises an upper pressing disc (821) and a lower pressing disc (822) corresponding to the upper and lower sides of the pressure regulating diaphragm (82), and a fastener (823) passing through the upper pressing disc (821), the pressure regulating diaphragm (82) and the lower pressing disc (822) from bottom to top in an inverted T shape, the upper end of the fastener (823) is installed with a fastening nut (824), a positioning block (825) in the balance spring (85) is arranged between the fastening nut (824) and the upper pressing disc (821), a positioning sleeve (826) is sleeved on the fastener (823) below the upper pressing disc (821), and the upper end of the pressure regulating valve rod (83) is installed on the fastener (823) through threads.

8. A direct acting subsurface pressure regulating device according to claim 7, wherein, The outer side of the pressure regulating valve rod (83) is provided with a guide sleeve (88), the upper end of the guide sleeve (88) is provided with an outwardly extending connecting portion (881), the connecting portion (881) is provided with air passing holes (882) distributed in the circumferential direction, the connecting portion (881) is fixed with a connecting ring (89) installed on the lower cover (812) through screws, the positioning sleeve (826) is in the connecting ring (89) and an auxiliary diaphragm (810) is arranged therebetween, the outer edge of the auxiliary diaphragm (810) is extruded between the connecting portion (881) and the connecting ring (89), and the inner edge of the auxiliary diaphragm (810) is extruded between the fastener (823) and the positioning sleeve (826).

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