Safe and efficient pressure adjusting device
By introducing branch pipes and flow control components into the desuperheater and pressure regulator, and using pressure sensors and pressure relief pipes to achieve rapid pressure relief, the problems of low pressure reduction efficiency and safety hazards of the desuperheater and pressure regulator are solved, and safe and efficient pressure regulation is achieved.
Patent Information
- Application Number
- CN202520458540.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing desuperheating and pressure reducing devices have low pressure reduction efficiency and slow pressure relief speed after prolonged use, resulting in leakage and increased pipeline pressure, which poses a safety hazard.
A safe and efficient pressure regulating device was designed, comprising branch pipes, regulating pipes, pressure relief pipes, and flow control components. The device detects pressure in real time through pressure sensors and uses pressure relief pipes and flow control components to achieve rapid pressure relief and share the pressure of the main pipeline.
It achieves rapid and safe pressure regulation, improves the pressure distribution rate, and ensures the safety and stable operation of the equipment.
Smart Images
Figure CN223882182U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to pressure regulating technical field, more specifically, relate to a safe and efficient pressure regulating device. BACKGROUND
[0002] The main function of the temperature and pressure reducer is to reduce the temperature and pressure of the fluid to meet the requirements of the equipment or system. In the industrial field, when the fluid (such as steam, gas or liquid) passes through the pipeline or equipment, there may be high temperature and high pressure, which will bring certain threat to the normal operation and safety of the equipment.
[0003] In the existing temperature and pressure reducer, although the temperature and pressure reducer is provided, the pressure reduction efficiency cannot meet the requirements after a long time of use, and the pressure relief speed is slow, and there is a leakage in the temperature and pressure reducer, which causes the pressure of the subsequent pipeline to rise and causes certain safety problems. UTILITY MODEL CONTENTS
[0004] The utility model provides a safe and efficient pressure regulating device, it can realize the safe and efficient pressure regulation in branch, and share the pressure on the main pipeline.
[0005] The safe and efficient pressure regulating device of the utility model, including main pipeline, the main pipeline is provided with corresponding pressure reducing valve and temperature reducing device, branch pipeline, branch pipeline is located in the one side of the end of main pipeline, branch pipeline and main pipeline end sealedly fixed connection, adjust pipe, adjust pipe is located in the end of branch pipeline, adjust pipe and branch pipeline end sealedly fixed connection, adjust pipe includes upstream pipe and downstream pipe, be provided with pressure sensor in upstream pipe, the connecting end between upstream pipe and downstream pipe is provided with fixed limit piece, fixed limit piece and the inner wall of adjust pipe sealedly fixed connection, fixed limit piece is provided with the cross control assembly that cooperates with each other, cross control assembly is used for control upstream pipe and downstream pipe between open or close, pressure relief pipe, one end of pressure relief pipe and upstream pipe intercommunication, the other end of pressure relief pipe and downstream pipe intercommunication, be provided with the communicating pipe on pressure relief pipe, the communicating pipe one end and pressure relief pipe intercommunication, the other end of communicating pipe and cross control assembly intercommunication, the rear end of communicating pipe is provided with pilot regulating valve, pilot regulating valve and pressure sensor intercommunication for control pressure relief pipe open or close.
[0006] As a further improvement of the utility model, under normal circumstances, the pilot regulating valve and the cross control assembly are kept in closed state; when the pressure value monitored by the pressure sensor is higher than the set threshold value, the pilot regulating valve opens the pressure relief pipe to connect the upstream pipe and the downstream pipe, and the pressure in the cross control assembly will gradually decrease to drive the cross control assembly to open.
[0007] As a further improvement of the utility model, the intercepting control assembly comprises an intercepting valve, a connecting column and a control chamber; the intercepting valve is embedded in the fixed limiting piece, and the intercepting valve is in sliding connection with the fixed limiting piece; the connecting column is connected with the intercepting valve and the control chamber at two ends respectively; the connecting column is fixedly connected with the intercepting valve, and the connecting column is in sealing sliding connection with the control chamber, and the connecting column extends into the control chamber; the connecting column is sleeved with an adjusting spring at the outer periphery, and the adjusting spring is in abutment with the lower end of the control chamber and the upper end of the intercepting valve at two ends respectively; the control chamber is connected with the communicating pipe, and the control chamber and the pressure relief pipe are in communication with each other; under normal circumstances, the pressure in the control chamber keeps balance with the pressure in the pressure relief pipe and the upstream pipe.
[0008] As a further improvement of the utility model, the end face of the fixed limiting piece is provided with a plurality of holes around the circumference, and the plurality of holes are arranged through the wall of the fixed limiting piece; the lower end of the intercepting valve is provided with a plurality of guide columns around the circumference, the plurality of guide columns are matched with the plurality of holes in the fixed limiting piece, and the plurality of guide columns are in sliding connection with the plurality of holes; the upper end of the through cavity is provided with a notch, and the notch penetrates the side wall of the guide column; the two ends of the plurality of guide columns are further provided with a limiting piece a and a limiting piece b respectively, the limiting piece a is located at the upper end of the guide column, the limiting piece a is fixedly connected with the upper end of the guide column, and the outer diameter of the limiting piece a is greater than the diameter of the hole on the fixed limiting piece; a distance is kept between the limiting piece a and the notch; the limiting piece b is fixedly connected with the lower end of the guide column, and the outer diameter of the limiting piece b is greater than the diameter of the hole on the fixed limiting piece.
[0009] As a further improvement of the utility model, when the intercepting valve is in the closed state, the limiting piece a is in complete abutment with the upper wall of the fixed limiting piece, and the limiting piece b keeps a distance from the fixed limiting piece, the distance is the moving distance of the guide column, and the moving distance is always greater than the distance between the limiting piece a and the notch, so that when the intercepting valve is in the closed state, the notch is located in the hole of the fixed limiting piece; when the intercepting valve is in the open state, the notch is located outside the hole of the fixed limiting piece, that is, the upper end of the fixed limiting piece.
[0010] As a further improvement of the utility model, the control chamber is hollow, and the lower end of the outer side of the control chamber is provided with an abutting protrusion, which is fixedly connected with the upper end of the adjusting spring; the outer circumferential side wall of the control chamber is fixedly and sealingly connected with the wall of the adjusting pipe; the upper end of the connecting column is provided with a sliding rod, which is fixedly connected with the upper end of the connecting column and extends to the outer side through the upper wall of the control chamber, and is sealingly and slidingly connected with the upper end wall of the control chamber; the cavity of the control chamber is provided with an inner container, one end wall of which is fixedly and sealingly connected with the outer circumferential wall of the upper end of the connecting column, and the other end wall is fixedly and sealingly connected with the upper end of the sliding rod; two flexible adjusting rods are arranged in the inner container, and are fixedly connected with the two side walls of the inner container; the flexible adjusting rods are made of flexible material and have toughness; the upper end of the inner cavity of the control chamber is provided with a sealing abutting column, the sliding rod passes through the sealing abutting column, and the upper end wall of the inner container always abuts against the sealing abutting column, which is fixedly and sealingly connected with the upper end of the control chamber.
[0011] As a further improvement of the utility model, the starting end of the pressure relief pipe is provided with a valve a, which is fixedly connected with the pressure relief pipe and is used for controlling the opening or closing of the starting end of the pressure relief pipe; the rear end of the pilot regulating valve is provided with a valve b, which is fixedly connected with the pressure relief pipe and is used for controlling the opening or closing of the end of the pressure relief pipe; under normal circumstances, the valve a and the valve b remain in the open state.
[0012] As a further improvement of the utility model, under normal circumstances, the pressure in the upstream pipe is greater than that in the downstream pipe, and the pressure in the upstream pipe is balanced with the pressure in the pressure relief pipe and the cut-off control assembly in the front section of the pilot regulating valve.
[0013] Compared with the prior art, the utility model has the advantages of:
[0014] Compared with the prior art, the utility model has the advantages of: BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the sectional structure of the branch pressure regulating part of the utility model;
[0017] Figure 3 It is a schematic diagram of the sectional structure of the branch pressure regulating part of the utility model; Figure 2 It is an enlarged structure schematic diagram of the position A in the utility model.
[0018] Figure 4 For the pressure regulating device of the utility model Figure 2 Amplification structure schematic view of B place in the middle of the utility model;
[0019] Figure 5 For the pressure regulating device of the utility model
[0020] Mark explanation in the drawing:
[0021] Connecting pipe a1, pressure reducing valve 11, connecting pipe b2, intercepting valve 21, temperature reducing device 22, connecting pipe c3, main connecting pipe head 31, branch pipe 32, pressure regulating pipe 33, upstream pipe 331, downstream pipe 332, fixed limiting part 333, pressure relief pipe 34, valve a 341, communication pipe 342, pilot regulating valve 343, valve b 344, intercepting valve 35, guide column 351, cavity 352, notch 353, limiting part a 354, limiting part b 355, connecting column 36, adjusting spring 361, control chamber 37, abutment boss 371, sliding rod 372, inner bag 373, flexible adjusting rod 374, sealing abutting column 375. Specific implementation
[0022] Specific embodiment one: please refer to Figures 1-5 A safe and efficient pressure regulating device, connecting pipe a1, connecting pipe b2 and connecting pipe c3.
[0023] Among them, connecting pipe a1 is provided with pressure reducing valve 11, and pressure reducing valve 11 is fixedly connected with connecting pipe a1, and pressure reducing valve 11 has the ability of pressure relief to the pressure in connecting pipe a1. One end of connecting pipe a1 is connected with the outside pipeline, and the other end of connecting pipe a1 is detachably connected with connecting pipe b2 in a sealed manner. Connecting pipe b2 is provided with two branch pipelines by single-pipe branching to divide the pressure of the subsequent end of pressure reducing valve 11. The two branch pipelines of connecting pipe b2 are provided with intercepting valve 21 at the starting end respectively, and intercepting valve 21 is fixedly connected with the two branch pipelines of connecting pipe b2. The rear end of intercepting valve 21 is provided with temperature reducing device 22, and temperature reducing device 22 is fixedly connected with the two branch pipelines of connecting pipe b2, and temperature reducing device 22 has the ability of cooling the conveying material in the two branch pipelines of connecting pipe b2. It needs to be explained here that the technical means of pressure reducing valve 11, intercepting valve 21 and temperature reducing device 22 are all prior art in the technical field, which will not be repeated here.
[0024] In the embodiment, the connecting pipe c3 is located at the end of the connecting pipe b2, and the connecting pipe c3 is detachably connected to the connecting pipe b2 in a sealed manner. Specifically, the connecting pipe c3 comprises a main connecting pipe head 31, a branch pipe 32 and an adjusting pipe 33. One end of the connecting pipe c3 is connected to the connecting pipe b2, and the other end of the connecting pipe c3 is the main connecting pipe head 31. The branch pipe 32 is located on one side of the connecting pipe c3 and communicates with the connecting pipe c3 to serve as a shunt pipe of the connecting pipe c3. The adjusting pipe 33 is located at the end of the branch pipe 32 and is fixedly connected to the branch pipe 32 in a sealed manner. Specifically, the adjusting pipe 33 comprises an upstream pipe 331 and a downstream pipe 332. The upstream pipe 331 is provided with a pressure sensor to monitor the pressure in the upstream pipe 331 in real time. A connecting end between the upstream pipe 331 and the downstream pipe 332 is provided with a fixed limiting piece 333 fixedly connected to the inner wall of the adjusting pipe 33 in a sealed manner. The end face of the fixed limiting piece 333 is provided with a plurality of holes penetrating through the wall of the fixed limiting piece 333 to communicate the upstream pipe 331 and the downstream pipe 332 with each other. The upstream pipe 331 is provided with a pressure relief pipe 34 extending outward from one side. One end of the pressure relief pipe 34 communicates with the upstream pipe 331, and the other end of the pressure relief pipe 34 communicates with the downstream pipe 332. The pressure relief pipe 34 is fixedly connected to the upstream pipe 331 and the downstream pipe 332 in a sealed manner. Specifically, the starting end of the pressure relief pipe 34 is provided with a valve a341 fixedly connected to the pressure relief pipe 34. The valve a341 is used to control the opening or closing of the starting end of the pressure relief pipe 34. The rear end of the valve a341 is provided with a communication pipe 342, and the rear end of the communication pipe 342 is provided with a pilot regulating valve 343 fixedly connected to the pressure relief pipe 34. The pilot regulating valve 343 is used to control the opening or closing of the pipeline in the pressure relief pipe 34 and cooperates with the pressure sensor. When the monitoring pressure value of the pressure sensor is greater than the set threshold value, the pilot regulating valve 343 opens the valve to open the pipeline in the pressure relief pipe 34. When the monitoring pressure value of the pressure sensor is less than the set threshold value, the pilot regulating valve 343 closes the valve. The rear end of the pilot regulating valve 343 is provided with a valve b344 fixedly connected to the pressure relief pipe 34. The valve b344 is used to control the opening or closing of the end of the pressure relief pipe. Under normal circumstances, the valve a341 and the valve b344 remain in the open state.
[0025] In the embodiment, the fixed limiting part 333 is embedded with the intercepting valve 35, the lower end of the intercepting valve 35 is provided with a plurality of guide columns 351 around the circumference, the plurality of guide columns 351 are matched with a plurality of holes in the fixed limiting part 333, and the plurality of guide columns 351 are slidingly connected with the plurality of holes. A through cavity 352 is formed in the plurality of guide columns 351, and an opening is formed at the lower end of the guide column 351. The upper end of the through cavity 352 is provided with a slot 353, and the slot 353 penetrates the side wall of the guide column 351. The two ends of the plurality of guide columns 351 are respectively provided with a limiting part a 354 and a limiting part b 355. The limiting part a 354 is located at the upper end of the guide column 351, the limiting part a 354 is fixedly connected with the upper end of the guide column 351, the outer diameter of the limiting part a 354 is larger than the diameter of the hole on the fixed limiting part 333, so that the limiting part a 354 abuts against the upper wall of the fixed limiting part 333. The limiting part a 354 and the slot 353 maintain a certain distance, so that when the limiting part a 354 abuts against the wall of the fixed limiting part 333, the slot 353 is located in the upstream pipe 331 in the hole. The limiting part b 355 is located at the lower end of the guide column 351, and the limiting part b 355 is arranged around the opening of the through cavity 352, the limiting part b 355 is fixedly connected with the lower end of the guide column 351, the outer diameter of the limiting part b 355 is larger than the diameter of the hole on the fixed limiting part 333, so that the limiting part b 355 abuts against the lower wall of the fixed limiting part 333. When the intercepting valve 35 is in the closed state, the limiting part a 354 completely abuts against the upper wall of the fixed limiting part 333, and the limiting part b 355 maintains a distance with the fixed limiting part 333. The distance is the movement distance of the guide column 351, and the movement distance is always greater than the distance between the limiting part a 354 and the slot 353, so that when the intercepting valve 35 is in the closed state, the slot 353 is located in the hole of the fixed limiting part 333; when the intercepting valve 35 is in the open state, the slot 353 is located outside the hole of the fixed limiting part 333, that is, the upper end of the fixed limiting part 333.
[0026] The upper end of the intercept valve 35 is provided with a connecting column 36, and the connecting column 35 is fixedly connected with the upper end of the intercept valve 35. The outer periphery of the connecting column 36 is sleeved with an adjusting spring 361, the lower end of the adjusting spring 361 abuts against the upper wall of the intercept valve 35, and the lower end of the adjusting spring 361 is fixedly connected with the bottom end of the connecting column 36. The upper end of the adjusting spring 361 abuts against a control chamber 37, the control chamber 37 is a cavity, the lower end of the outer side of the control chamber 37 is provided with an abutting block 371, and the abutting block 371 is fixedly connected with the upper end of the adjusting spring 361. The connecting column 36 extends through the lower wall of the control chamber 37 and is arranged in the control chamber 37, and the connecting column 36 is sealingly and slidably connected with the lower end of the control chamber 37. The outer peripheral side wall of the control chamber 37 is sealingly and fixedly connected with the wall body of the adjusting pipe 33. The upper end of the connecting column 36 is provided with a sliding rod 372, the sliding rod 372 is fixedly connected with the upper end of the connecting column 36, the sliding rod 372 extends through the upper wall of the control chamber 37 and is arranged outside, and the sliding rod 372 is sealingly and slidably connected with the upper end wall of the control chamber 37. The cavity of the control chamber 37 is provided with an inner container 373, one end wall of the inner container 373 is sealingly and fixedly connected with the outer peripheral wall of the upper end of the connecting column 36, and the other end wall of the inner container 373 is sealingly and fixedly connected with the upper end of the sliding rod 372, so that a sealed chamber is formed in the inner container 373. Flexible adjusting rods 374 are arranged on both sides of the inner container 373, the flexible adjusting rods 374 are fixedly connected with the side walls of the inner container 373, the flexible adjusting rods 374 are made of flexible material, and the flexible adjusting rods 374 have a certain toughness. The inner cavity of the control chamber 37 is provided with a sealing abutting column 375, the sliding rod 372 passes through the sealing abutting column 375, and the upper end wall of the inner container 373 always abuts against the sealing abutting column 375, the sealing abutting column 375 is sealingly and fixedly connected with the upper end of the control chamber 37. Under normal circumstances, the pressure in the upstream pipe 331 is greater than that in the downstream pipe 332, and the pressure in the upstream pipe 331 and the pressure in the inner container 373 communicated with the pressure relief pipe 34 and the communication pipe 342 of the front section of the pilot regulating valve 343 remain balanced.
[0027] It should be noted that the communication pipe 342 on the pressure relief pipe 34 is in sealed communication with the pressure relief pipe 34 at one end and the inner container 373 at the other end. When the pilot regulating valve 343 is in the closed state, the inner container 373 is in communication with the pressure relief pipe 34, and the water pressure in the upstream pipe 331 is balanced with the internal pressure in the inner cavity of the inner container 373. When the monitoring value of the pressure sensor is higher than the set threshold value, the pilot regulating valve 343 is opened, and at this time the pressure of the downstream pipe 332 is less than that of the upstream pipe 331, so that the pressure relief pipe 34 communicates the upstream pipe 331 and the downstream pipe 332, and at the same time due to the transfer of pressure, the pressure in the control chamber 37 is reduced, and the pressure in the upstream pipe 331 is greater than that in the control chamber 37, so that the pressure in the upstream pipe 331 presses and opens the shutoff valve 35, and at the same time the notch 353 is displaced to the upper end of the fixed limiting piece 333, so that the upstream pipe 331 and the downstream pipe 332 are communicated and relieved through the notches 353 on the guide columns 351. At this time, when the shutoff valve 35 is pressed, the adjusting spring 361 is also extruded; when the monitoring pressure value of the pressure sensor is lower than the set threshold value, the pilot regulating valve 343 closes the regulating channel 34, so that the pressure in the control chamber 37 and the pressure in the upstream pipe 331 gradually tend to be balanced, at this time the adjusting spring 361 is pressed and reset, so that the shutoff valve 35 is reset to shut off the connection between the upstream pipe 331 and the downstream pipe 332.
Claims
1. A safe and efficient pressure regulating device, characterized in that: it comprises a main pipeline, a corresponding pressure reducing valve (11) and a temperature reducing device (22) are arranged on the main pipeline; a branch pipeline is arranged on one side of the end of the main pipeline and is sealingly and fixedly connected with the end of the main pipeline; a regulating pipe (33) is arranged at the end of the branch pipeline and is sealingly and fixedly connected with the end of the branch pipeline, the regulating pipe (33) comprises an upstream pipe (331) and a downstream pipe (332), a pressure sensor is arranged in the upstream pipe (331); a fixed limiting piece (333) is arranged at the connecting end between the upstream pipe (331) and the downstream pipe (332), the fixed limiting piece (333) is sealingly and fixedly connected with the inner wall of the regulating pipe (33); a mutual cooperation type cut-off control assembly is arranged on the fixed limiting piece (333) and is used for controlling the opening or closing between the upstream pipe (331) and the downstream pipe (332); a pressure relief pipe (34) is in communication with the upstream pipe (331) at one end and is in communication with the downstream pipe (332) at the other end; a communication pipe (342) is arranged on the pressure relief pipe (34), one end of the communication pipe (342) is in communication with the pressure relief pipe (34), and the other end of the communication pipe (342) is in communication with the cut-off control assembly; a pilot regulating valve (343) is arranged at the rear end of the communication pipe (342), the pilot regulating valve (343) cooperates with the pressure sensor to control the opening or closing of the pressure relief pipe (34). Under normal circumstances, the pilot regulating valve (343) and the cut-off control assembly are in a closed state; when the pressure value monitored by the pressure sensor is higher than the set threshold value, the pilot regulating valve (343) opens the pressure relief pipe (34) to connect the upstream pipe (331) and the downstream pipe (332), and the pressure in the cut-off control assembly gradually decreases to drive the cut-off assembly to open. The cut-off control assembly comprises a cut-off valve (35), a connecting column (36) and a control chamber (37); the cut-off valve (35) is embedded in the fixed limiting piece (333) and is in sliding connection with the fixed limiting piece (333); the connecting column (36) is connected with the cut-off valve (35) and the control chamber (37) at both ends; the connecting column (36) is fixedly connected with the cut-off valve (35) and sealingly and slidingly connected with the control chamber (37), and extends into the control chamber (37); an adjusting spring (361) is sleeved on the outer periphery of the connecting column (36), and the two ends of the adjusting spring (361) abut against the lower end of the control chamber (37) and the upper end of the cut-off valve (35), respectively; the control chamber (37) is connected with the communication pipe (342) and is in communication with the pressure relief pipe (34); under normal circumstances, the pressure in the control chamber (37) is balanced with the pressure in the pressure relief pipe (34) and the upstream pipe (331). 2. A safe and efficient pressure regulating device as claimed in claim 1, wherein: 3. A safe and efficient pressure regulating device as claimed in claim 1, wherein: 4. A safe and efficient pressure regulating device as claimed in claim 3, wherein: The end face of the fixed limiting part (333) is provided with a plurality of holes around the circumference, and the plurality of holes pass through the wall of the fixed limiting part (333); the lower end of the stop valve (35) is provided with a plurality of guide columns (351) around the circumference, the plurality of guide columns (351) are matched with the plurality of holes in the fixed limiting part (333), and the plurality of guide columns (351) are in sliding connection with the plurality of holes; the upper end of the through cavity (352) is provided with a notch (353), and the notch (353) penetrates the side wall of the guide column (351); the two ends of the plurality of guide columns (351) are further provided with a limiting part a (354) and a limiting part b (355), respectively, the limiting part a (354) is located at the upper end of the guide column (351), the limiting part a (354) is fixedly connected with the upper end of the guide column (351), and the outer diameter of the limiting part a (354) is greater than the diameter of the hole on the fixed limiting part (333); the limiting part a (354) and the notch (353) are kept apart; the limiting part b (355) is fixedly connected with the lower end of the guide column (351), and the outer diameter of the limiting part b (355) is greater than the diameter of the hole on the fixed limiting part (333).
5. A safe and efficient pressure regulating device as claimed in claim 4, wherein: When the stop valve (35) is in a closed state, the limiting part a (354) completely abuts against the upper wall of the fixed limiting part (333), and the limiting part b (355) is kept apart from the fixed limiting part (333), the distance is the movement distance of the guide column (351), and the movement distance is always greater than the distance between the limiting part a (354) and the notch (353), so that when the stop valve (35) is in a closed state, the notch (353) is located in the hole of the fixed limiting part (333); when the stop valve (35) is in an open state, the notch (353) is located outside the hole of the fixed limiting part (333), that is, the upper end of the fixed limiting part (333).
6. A safe and efficient pressure regulating device as claimed in claim 3, wherein: The control chamber (37) is hollow, and the outer lower end of the control chamber (37) is provided with an abutting protrusion (371) fixedly connected with the upper end of the adjusting spring (361); the outer peripheral side wall of the control chamber (37) is sealingly and fixedly connected with the wall body of the adjusting pipe (33); the upper end of the connecting column (36) is provided with a sliding rod (372) fixedly connected with the upper end of the connecting column (36), the sliding rod (372) extends through the upper wall of the control chamber (37) to the outside, and the sliding rod (372) is sealingly and slidingly connected with the upper end wall body of the control chamber (37); the cavity of the control chamber (37) is provided with an inner container (373), one end wall body of the inner container (373) is sealingly and fixedly connected with the outer peripheral wall body of the upper end of the connecting column (36), and the other end wall body of the inner container (373) is sealingly and fixedly connected with the upper end of the sliding rod (372); two flexible adjusting rods (374) are arranged in the inner container (373), the flexible adjusting rods (374) are fixedly connected with the two side wall bodies of the inner container (373), the flexible adjusting rods (374) are made of flexible material, and the flexible adjusting rods (374) have toughness; the inner cavity of the control chamber (37) is provided with a sealing abutting column (375), the sliding rod (372) is arranged through the sealing abutting column (375), the upper end wall body of the inner container (373) is always abutted against the sealing abutting column (375), and the sealing abutting column (375) is sealingly and fixedly connected with the upper end of the control chamber (37).
7. A safe and efficient pressure regulating device as claimed in claim 1, wherein: The starting end of the pressure relief pipe (34) is provided with a valve a (341), the valve a (341) is fixedly connected with the pressure relief pipe (34), and the valve a (341) is used for controlling the opening or closing of the starting end of the pressure relief pipe (34); the rear end of the pilot regulating valve (343) is provided with a valve b (344), the valve b (344) is fixedly connected with the pressure relief pipe (34), and the valve b (344) is used for controlling the opening or closing of the end of the pressure relief pipe; under normal circumstances, the valve a (341) and the valve b (344) remain in the normally open state.
8. A safe and efficient pressure regulating device as claimed in claim 1, wherein: Under normal circumstances, the pressure in the upstream pipe (331) is greater than that in the downstream pipe (332), and the pressure in the upstream pipe (331) is balanced with the pressure in the pressure relief pipe (34) in front of the pilot regulating valve (343) and the pressure in the intercepting control assembly.