Safety explosion-proof type gas pressure regulator

Abstract

The application discloses a safe and explosion-proof gas pressure regulator, which is applied to the technical field of gas pressure regulators and comprises a body, a pressure regulating mechanism, a back pressure mechanism, a temporary storage mechanism, a coordination mechanism and a supporting mechanism, wherein the supporting mechanism is arranged on the body, the pressure regulating mechanism, the back pressure mechanism, the temporary storage mechanism and the coordination mechanism are all arranged on the supporting mechanism, the pressure regulating mechanism, the temporary storage mechanism and the back pressure mechanism are sequentially arranged on one side of the body in an anticlockwise direction, the pressure regulating mechanism comprises a pressure regulating bin, a pressure regulating plate, a push plate and a special-shaped cam, a gas guide hole one is arranged at the center of one end of the pressure regulating bin, and a gas guide hole two is arranged at the center of the other end of the pressure regulating bin, a plurality of pressure regulating holes are equidistantly arranged on the pressure regulating plate along the circumferential direction of the gas guide hole one, and a plurality of air permeation holes are equidistantly arranged on the push plate along the circumferential direction of the gas guide hole one, and the application can improve the durability, operation stability and service life of the gas pressure regulator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas pressure regulators, in particular to a safe and explosion-proof gas pressure regulator. BACKGROUND

[0002] A gas pressure regulator, commonly known as a pressure reducing valve, is a device that automatically adjusts the inlet gas flow to stabilize the outlet pressure at a set value. It is widely used in various gas transmission and distribution systems for residents, businesses and industries.

[0003] To meet the differentiated needs of different users for outlet pressure, there are gas pressure regulators on the market whose outlet pressure can be adjusted. Such regulators can adjust the pressure level of outlet gas according to actual needs, and after closing on the low pressure side, they can effectively block the gas source on the high pressure side to ensure safety.

[0004] However, in actual application, when the low pressure side pipeline is suddenly closed due to the start-stop of user equipment or valve action, the gas flow through the pressure regulator is instantaneously cut off. Due to the inertia and compressibility of the fluid, strong pressure fluctuations will occur in the high pressure side pipeline, producing a "water hammer" effect similar to fluid mechanics. This effect is characterized by a sudden impact pressure peak on the high pressure side, which is much higher than the normal working pressure. This transient pressure wave will cause a severe impact on the internal structure of the pressure regulator, especially on the precision components responsible for pressure sensing and flow regulation, such as diaphragms, valve cores, valve seats and linkage mechanisms. Long-term or repeated exposure to such impact loads can cause fatigue damage, permanent deformation or seal failure in the above-mentioned components, affecting the stability and accuracy of the pressure regulating pressure, and significantly reducing the overall reliability and service life of the pressure regulator, increasing maintenance costs and safety hazards.

[0005] Therefore, it is necessary to provide a safe and explosion-proof gas pressure regulator to solve the above problems. SUMMARY

[0006] The present application aims to provide a safe and explosion-proof gas pressure regulator that can effectively suppress and absorb the transient pressure impact generated on the high pressure side, protecting the internal core regulating mechanism, thereby improving the durability, operational stability and service life of the gas pressure regulator, to solve the problems raised in the background art.

[0007] To solve the above technical problems, the present application provides the following technical solution: a safe and explosion-proof gas pressure regulator, comprising a body, a pressure regulating mechanism, a back pressure mechanism, a temporary storage mechanism, a coordination mechanism and a support mechanism, the support mechanism being arranged on the body, the pressure regulating mechanism, the back pressure mechanism, the temporary storage mechanism and the coordination mechanism all being arranged on the support mechanism, the pressure regulating mechanism, the temporary storage mechanism and the back pressure mechanism being arranged in sequence on one side of the body in a counterclockwise direction;

[0008] The pressure regulating mechanism comprises a pressure regulating bin, a pressure regulating plate, a pushing plate and a special-shaped cam, a gas guide hole one is arranged at the center of one end of the pressure regulating bin, and a gas guide hole two is arranged at the center of the other end of the pressure regulating bin;

[0009] A plurality of pressure regulating holes are equidistantly arranged on the pressure regulating plate along the circumferential direction of the gas guide hole one, a plurality of air permeation holes are equidistantly arranged on the pushing plate along the circumferential direction of the gas guide hole one, and a pushing spring is fixedly connected between the pressure regulating plate and the pushing plate;

[0010] A rotating shaft is connected to the bearing inside the pressure regulating bin, the special-shaped cam is fixed on the rotating shaft, and a torsional spring is arranged on the rotating shaft.

[0011] According to the above technical solution, the body is provided with a high-pressure side and a low-pressure side, the high-pressure side of the body is connected with a gas guide pipe, the gas guide pipe is connected with the pressure regulating mechanism, the low-pressure side of the body is connected with a gas return pipe, and the gas return pipe is connected with the back pressure mechanism.

[0012] According to the above technical solution, the pressure regulating plate, the pushing plate and the special-shaped cam are sequentially arranged from one end of the pressure regulating bin provided with the gas guide hole one to the other end provided with the gas guide hole two, and the pressure regulating plate and the pushing plate are both in sliding connection with the pressure regulating bin.

[0013] The rotating shaft is located on the side of the pushing plate close to the gas guide hole two, the top of the rotating shaft penetrates through the top of the pressure regulating bin, the side of the torsional spring is fixedly connected with the inside of the pressure regulating bin, and the end of the torsional spring is fixedly connected with the special-shaped cam.

[0014] According to the above technical solution, the special-shaped cam is arranged obliquely, the side of the special-shaped cam close to the pushing plate is in contact with the pushing plate, the side of the special-shaped cam away from the pushing plate is in contact with the pressure regulating bin, an arc-shaped groove is arranged at the contact position of the pressure regulating bin and the special-shaped cam, the height of the arc-shaped groove is the same as the thickness of the special-shaped cam in the vertical direction, and the arc radius of the arc-shaped groove matches the arc radius of the special-shaped cam at the position.

[0015] Two groups of air permeation grooves and a buffer gas groove are arranged on the special-shaped cam, the two groups of air permeation grooves are located on the two sides of the special-shaped cam, the buffer gas groove is located between the two groups of air permeation grooves, the buffer gas groove is located at the arc-shaped groove, the buffer gas groove is arranged obliquely, the oblique direction of the buffer gas groove is opposite to the oblique direction of the long diameter direction of the special-shaped cam, the height of the air permeation groove in the vertical direction is greater than the diameter of the gas guide hole two, and the height of the buffer gas groove in the vertical direction is between the diameter of the gas guide hole two and the thickness of the special-shaped cam.

[0016] According to the above technical solution, the pressure regulating mechanism and the back pressure mechanism have the same structure and the same working principle, except that the arrangement direction of the back pressure mechanism is opposite to that of the pressure regulating mechanism, and the gas guide hole two of the back pressure mechanism is connected with the gas return pipe.

[0017] According to the technical scheme, the temporary storage mechanism comprises a buffer box, a barometer and a pressure relief assembly, the barometer is arranged on the top of the buffer box, one end of the buffer box close to the pressure regulating mechanism is provided with an air inlet pipe, the air inlet pipe is connected with the air guide hole two of the pressure regulating chamber of the pressure regulating mechanism, one end of the buffer box close to the back pressure mechanism is provided with an air outlet pipe, the air outlet pipe is connected with the air guide hole one of the pressure regulating chamber of the back pressure mechanism, and the pressure relief assembly is located on the side of the buffer box away from the body.

[0018] According to the technical scheme, the pressure relief assembly comprises a base, a blocking plate, a top plate and a sealing cover, the buffer box is fixed with a pressure relief joint on the side away from the body, the buffer box is internally provided with a mounting groove corresponding to the position of the pressure relief joint, the base is arranged in the mounting groove and fixedly connected with the buffer box, a plurality of grooves are arranged on the side of the base away from the mounting groove, and a pressure relief through hole is arranged at the center of the base.

[0019] A spring one is arranged in the groove, the blocking plate is arranged on the side of the base away from the mounting groove, the spring one is located between the base and the blocking plate, the two ends of the spring one are fixedly connected with the base and the blocking plate respectively, a blocking block is fixedly connected with the center of the side of the blocking plate close to the base, the blocking block is high at the outer ring and concave at the center, and a plurality of pressure relief holes one are arranged on the blocking block away from the blocking plate.

[0020] The top plate is arranged in the pressure relief joint, one end of the top plate close to the blocking block is rod-shaped, a plurality of pressure relief holes two are arranged on the side of the top plate away from the base, the top plate is slidably connected with the pressure relief joint, a plurality of springs two are equidistantly arranged in the pressure relief joint along the circumferential direction of the pressure relief joint, one end of the spring two is fixedly connected with the buffer box, the other end of the spring two is fixedly connected with the top plate, and the sealing cover is arranged at the end of the pressure relief joint.

[0021] According to the technical scheme, the cooperative mechanism comprises two groups of fixed connecting rods, a connecting rod and a limiting cylinder, the two groups of fixed connecting rods are respectively fixed on the top of the rotating shaft of the pressure regulating mechanism and the top of the rotating shaft of the back pressure mechanism, the two ends of the connecting rod are respectively hingedly connected with the ends of the fixed connecting rods, the connecting rod penetrates through the limiting cylinder, and a hand wheel is threadedly connected with the top of the limiting cylinder.

[0022] According to the technical scheme, the supporting mechanism comprises a hoop, the hoop is fixed on the bottom of the body by using a fastener, a supporting plate is fixedly connected with the side of the hoop, a plurality of supporting seats are fixedly connected with the supporting plate, the supporting seats are fixedly connected with the pressure regulating chamber of the pressure regulating mechanism, the pressure regulating chamber of the back pressure mechanism and the buffer box, a supporting frame is fixedly connected between the pressure regulating chamber of the pressure regulating mechanism and the pressure regulating chamber of the back pressure mechanism, and the limiting cylinder is fixed on the top of the supporting frame.

[0023] According to the technical scheme, fins are fixedly connected to the pressure regulating chamber of the pressure regulating mechanism, the pressure regulating chamber of the back pressure mechanism and the buffer box of the temporary storage mechanism.

[0024] Compared with the prior art, the application has the beneficial effects that: by setting the pressure regulating mechanism, the temporary storage mechanism and the back pressure mechanism, the application can quickly respond to and absorb the instantaneous high pressure impact caused by the sudden closing of the user end valve, avoid the high pressure impact directly acting on the core regulating component of the pressure regulator body, and can re-introduce the high pressure gas in the temporary storage mechanism 4 into the low pressure pipeline after the system pressure is stable, realize pressure energy recovery, change passive bearing to active absorption and recovery, reduce the fatigue damage and failure risk of the internal parts of the body, and fundamentally improve the durability and reliability of the pressure regulator.

[0025] By setting the special-shaped cam, the top push plate can be mechanically pushed to open, and can also be automatically opened due to the pressure difference on both sides, realizing the bidirectional safety function of forward pressure relief and reverse overflow, ensuring that a discharge path can be found under any abnormally high pressure, and improving the safety of the pressure regulator.

[0026] By setting the cooperative mechanism, the action of the pressure regulating mechanism and the back pressure mechanism can be forcibly guaranteed to be mutually exclusive by the mechanical connecting rod, and the cooperative interlocking can prevent air flow short circuiting, and ensure the singularity and absolute reliability of the pressure regulator. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the application and constitute a part of the specification, illustrate the application and are used to explain the application, and do not constitute a limitation on the application. In the drawings:

[0028] Figure 1 is a schematic view of the overall structure of the application;

[0029] Figure 2 is a schematic view of the rear view of the overall structure of the application;

[0030] Figure 3 is a schematic view of the overall structure of the application;

[0031] Figure 4 is a schematic view of the partial structure of the application;

[0032] Figure 5 is a schematic view of the overall structure of the application;

[0033] Figure 6 is an exploded schematic view of the pressure regulating mechanism of the application;

[0034] Figure 7 is a schematic view of the Figure 5 A region of the application;

[0035] Figure 8 is a schematic view of a part structure top view cross-section of the present application;

[0036] Figure 9 is a schematic view of a part structure top view cross-section of the present application; Figure 8 is a schematic view of a B area enlarged structure in the present application;

[0037] Figure 10 is a schematic view of an explosion structure of the pressure relief assembly of the present application;

[0038] Figure 11 is a schematic view of an explosion structure of the pressure relief assembly of the present application;

[0039] Fig. 1, the main body; 11, the high pressure side; 12, the low pressure side; 13, the air guide pipe; 14, the air return pipe;

[0040] 2, the pressure regulating mechanism; 21, the pressure regulating chamber; 211, the air guide hole one; 212, the air guide hole two; 213, the arc-shaped groove; 22, the pressure regulating plate; 221, the pressure regulating hole; 23, the push plate; 231, the air permeation hole; 24, the push spring; 25, the rotating shaft; 26, the special-shaped cam; 261, the air permeation groove; 262, the buffer air groove; 27, the torsion spring;

[0041] 3, the back pressure mechanism;

[0042] 4, the temporary storage mechanism; 41, the buffer box; 411, the pressure relief joint; 42, the air pressure gauge; 43, the air inlet pipe; 44, the air outlet pipe; 45, the pressure relief assembly; 451, the base; 4511, the sink; 4512, the pressure relief through hole; 452, the blocking plate; 453, the spring one; 454, the blocking block; 4541, the pressure relief hole one; 455, the spring two; 456, the top plate; 4561, the pressure relief hole two; 457, the sealing cover;

[0043] 5, the coordination mechanism; 51, the fixed connecting rod; 52, the connecting rod; 53, the limiting cylinder; 54, the hand wheel;

[0044] 6, the supporting mechanism; 61, the clamp; 62, the supporting plate; 63, the supporting seat; 64, the supporting frame;

[0045] 7, the fin. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0047] Please refer to Figures 1-11The application provides the technical scheme: a safe and explosion-proof gas pressure regulator, which comprises a body 1, a pressure regulating mechanism 2, a back pressure mechanism 3, a temporary storage mechanism 4, a coordination mechanism 5 and a supporting mechanism 6, the supporting mechanism 6 is arranged on the body 1, the pressure regulating mechanism 2, the back pressure mechanism 3, the temporary storage mechanism 4 and the coordination mechanism 5 are all arranged on the supporting mechanism 6, the pressure regulating mechanism 2, the temporary storage mechanism 4 and the back pressure mechanism 3 are sequentially arranged on one side of the body 1 in the counterclockwise direction, the supporting mechanism 6 is used for providing support for the pressure regulating mechanism 2, the back pressure mechanism 3, the temporary storage mechanism 4 and the coordination mechanism 5, the pressure regulating mechanism 2 is used for relieving the pressure in the body 1 and temporarily storing in the temporary storage mechanism 4, and the back pressure mechanism 3 can re-introduce the high-pressure gas in the temporary storage mechanism 4 into the body 1 when the pressure in the temporary storage mechanism 4 is high, so that the instantaneous pressure impact is inhibited and absorbed, the internal core regulating mechanism is protected, and the durability, the operation stability and the service life of the gas pressure regulator are improved.

[0048] Specifically, as shown in Figure 2 and Figure 3 , the body 1 is provided with a high-pressure side 11 and a low-pressure side 12, the high-pressure side 11 of the body 1 is connected with a gas guide pipe 13, the gas guide pipe 13 is connected with the pressure regulating mechanism 2, and the low-pressure side 12 of the body 1 is connected with a gas return pipe 14, and the gas return pipe 14 is connected with the back pressure mechanism 3.

[0049] Specifically, as shown in Figure 2 and Figures 4-7 , the pressure regulating mechanism 2 comprises a pressure regulating bin 21, a pressure regulating plate 22, a pushing plate 23 and a special-shaped cam 26, the pressure regulating bin 21 is provided with a gas guide hole one 211 at the center of one end and a gas guide hole two 212 at the center of the other end, the pressure regulating plate 22, the pushing plate 23 and the special-shaped cam 26 are sequentially arranged from the one end provided with the gas guide hole one 211 to the one end provided with the gas guide hole two 212 on the pressure regulating bin 21, and the pressure regulating plate 22 and the pushing plate 23 are both in sliding connection with the pressure regulating bin 21.

[0050] A plurality of pressure regulating holes 221 are equidistantly arranged on the pressure regulating plate 22 along the circumferential direction of the gas guide hole one 211, a plurality of air holes 231 are equidistantly arranged on the pushing plate 23 along the circumferential direction of the gas guide hole one 211, and a pushing spring 24 is fixedly connected between the pressure regulating plate 22 and the pushing plate 23.

[0051] A rotating shaft 25 is connected with a bearing in the pressure regulating bin 21, the rotating shaft 25 is located on the side of the pushing plate 23 close to the gas guide hole two 212, the top of the rotating shaft 25 penetrates through the top of the pressure regulating bin 21, the special-shaped cam 26 is fixed on the rotating shaft 25, a torsional spring 27 is arranged on the rotating shaft 25, the side of the torsional spring 27 is fixedly connected with the inside of the pressure regulating bin 21, and the end of the torsional spring 27 is fixedly connected with the special-shaped cam 26.

[0052] Further, as shown in Figure 6 and 7As shown, the special-shaped cam 26 is arranged obliquely, the side of the special-shaped cam 26 close to the push plate 23 is in contact with the push plate 23, and the side of the special-shaped cam 26 away from the push plate 23 is in contact with the pressure regulating chamber 21. The pressure regulating chamber 21 is provided with an arc-shaped groove 213 at the contact position with the special-shaped cam 26. The height of the arc-shaped groove 213 is the same as the thickness of the special-shaped cam 26 in the vertical direction, and the arc radius of the arc-shaped groove 213 matches the arc radius of the special-shaped cam 26 at this position, so that the side of the special-shaped cam 26 close to the second gas guide hole 212 is located in the arc-shaped groove 213, and the second gas guide hole 212 can be blocked. The long diameter direction of the special-shaped cam 26 is oblique, and is not collinear with the central axis of the second gas guide hole 212, and Figure 7 The initial state is shown in the middle.

[0053] The special-shaped cam 26 is provided with two groups of air permeable grooves 261 and buffer air grooves 262. The two groups of air permeable grooves 261 are located on both sides of the special-shaped cam 26, and the buffer air groove 262 is located between the two groups of air permeable grooves 261. The buffer air groove 262 is located at the arc-shaped groove 213, and is arranged obliquely. The oblique direction of the buffer air groove 262 is opposite to the oblique direction of the long diameter direction of the special-shaped cam 26. The height of the air permeable groove 261 in the vertical direction is greater than the diameter of the second gas guide hole 212. The height of the buffer air groove 262 in the vertical direction is between the diameter of the second gas guide hole 212 and the thickness of the special-shaped cam 26.

[0054] The pressure regulating plate 22, the push plate 23, the push spring 24, the special-shaped cam 26 and the torsion spring 27 are all arranged in the pressure regulating chamber 21. One end of the rotating shaft 25 penetrates the top of the pressure regulating chamber 21. The penetration position meets the requirements that the rotating shaft 25 can rotate with the pressure regulating chamber 21, and at the same time, the rotating shaft 25 and the pressure regulating chamber 21 are in sealed connection.

[0055] Based on the above structure, when the low-pressure side 12 pipeline of the body 1 is suddenly closed due to the start and stop of the user equipment or the action of the valve, the gas flow through the body 1 is instantaneously cut off, causing the pressure of the high-pressure side 11 to rise. At this time, the gas pressure of the high-pressure side 11 is regulated by the body 1;

[0056] Due to the inertia and compressibility of the fluid, the gas will also cause strong pressure fluctuations in the low-pressure side 12 pipeline of the body 1, resulting in a sudden impact pressure peak of the low-pressure side 12 pipeline gas which is much higher than the normal working pressure. When the pressure in the low-pressure side 12 pipeline acts on the pressure regulating plate 22 and the pressure is greater than the elastic force of the push spring 24, the push spring 24 is compressed, the pressure regulating plate 22 unblocks the gas guide hole one 211, and the gas in the low-pressure side 12 pipeline enters the inside of the pressure regulating chamber 21 from the gas guide pipe 13 and the gas guide hole one 211. Because the pressure regulating plate 22 is provided with a pressure regulating hole 221, the gas can further enter the inside of the pressure regulating chamber 21 through the pressure regulating hole 221; at the same time, the push plate 23 moves to the side close to the special-shaped cam 26 under the elastic force of the push spring 24. Because the special-shaped cam 26 is inclined and the end close to the push plate 23 is in contact with the push plate 23, the moving push plate 23 will extrude the special-shaped cam 26, so that the special-shaped cam 26 drives the rotating shaft 25 to rotate towards the inclined side of the special-shaped cam 26, so that the special-shaped cam 26 unblocks the gas guide hole two 212 at the arc-shaped groove 213, and the gas guide hole two 212 is in communication with the air permeation groove 261, so that the gas in the inside of the pressure regulating chamber 21 can flow out through the air permeation hole 231, the air permeation groove 261 and the gas guide hole two 212, reducing the gas pressure in the inside of the pressure regulating chamber 21;

[0057] If the gas pressure in the inside of the pressure regulating chamber 21 is low when the special-shaped cam 26 is in the initial state, but the gas pressure in the buffer gas groove 262 of the special-shaped cam 26 is high, the pressure difference between the two sides of the special-shaped cam 26 can be used to drive the special-shaped cam 26 to rotate towards the inclined side, so that the special-shaped cam 26 unblocks the gas guide hole two 212 at the arc-shaped groove 213, and the gas guide hole two 212 is in communication with the air permeation groove 261, so that the high-pressure gas can enter the inside of the pressure regulating chamber 21 in the opposite direction, so that the pressure difference between the inside of the buffer tank 41 and the inside of the pressure regulating chamber 21 is reduced, avoiding the safety hazard caused by the continuous high pressure in the inside of the buffer tank 41. In this process, if the pressure in the inside of the pressure regulating chamber 21 increases, the pressure regulating plate 22 keeps blocking the gas guide hole one 211 under the pressure of the gas, until the pressure in the low-pressure side 12 pipeline is greater than the gas pressure in the inside of the pressure regulating chamber 21;

[0058] When the gas pressure in the low-pressure side 12 pipeline and the gas pressure in the inside of the pressure regulating chamber 21 are close, that is, the pressure regulating plate 22 is balanced by the gas pressure in the low-pressure side 12 pipeline and the elastic force of the push spring 24, the pressure regulating plate 22 blocks the gas guide hole one 211 under the elastic force of the push spring 24, the push spring 24 drives the push plate 23 to move to the side close to the pressure regulating plate 22, the extrusion of the push plate 23 on the special-shaped cam 26 is weakened, and the special-shaped cam 26 drives the rotating shaft 25 to rotate towards the direction opposite to the inclined direction of the special-shaped cam 26 under the action of the torsion spring 27, until it returns to the initial state;

[0059] When the pressure difference between the two sides of the special-shaped cam 26 is small, that is, the special-shaped cam 26 will not be driven to rotate due to the large pressure on one side of the buffer gas groove 262, the special-shaped cam 26 will still be driven to rotate by the torsional spring 27, the rotating shaft 25 and the special-shaped cam 26 will rotate towards the direction opposite to the inclination direction of the special-shaped cam 26 until the initial state is restored.

[0060] As shown in Figure 5 , the pressure regulating mechanism 2 and the back pressure mechanism 3 have the same structure and the same working principle, except that the setting direction of the back pressure mechanism 3 is opposite to that of the pressure regulating mechanism 2, the gas guiding hole two 212 of the back pressure mechanism 3 is connected with the gas return pipe 14, and when the gas guiding hole two 212 on the back pressure mechanism 3 is opened, the gas pressure of the pipeline on the low pressure side 12 can be relieved, further relieving the pressure relief pressure of the body 1; when the gas guiding hole one 211 on the back pressure mechanism 3 is opened, the gas pressure on one side of the temporary storage mechanism 4 can be relieved.

[0061] Specifically, as shown in Figure 2 and Figures 8-11 , the temporary storage mechanism 4 includes a buffer tank 41, a gas pressure gauge 42 and a pressure relief assembly 45, the gas pressure gauge 42 is arranged on the top of the buffer tank 41, the gas pressure gauge 42 is used to detect the gas pressure inside the buffer tank 41, one end of the buffer tank 41 close to the pressure regulating mechanism 2 is provided with an air inlet pipe 43, the air inlet pipe 43 is connected with the gas guiding hole two 212 on the pressure regulating chamber 21 of the pressure regulating mechanism 2, one end of the buffer tank 41 close to the back pressure mechanism 3 is provided with an air outlet pipe 44, the air outlet pipe 44 is connected with the gas guiding hole one 211 on the pressure regulating chamber 21 of the back pressure mechanism 3, and the pressure relief assembly 45 is located on the side of the buffer tank 41 away from the body 1.

[0062] Further, as shown in Figures 8-11 , the pressure relief assembly 45 includes a base 451, a blocking plate 452, a top plate 456 and a sealing cover 457, the buffer tank 41 is fixed with a pressure relief connector 411 on the side away from the body 1, the buffer tank 41 is provided with a mounting groove inside, the mounting groove corresponds to the position of the pressure relief connector 411, the base 451 is arranged in the mounting groove and is fixedly connected with the buffer tank 41, a plurality of grooves 4511 are arranged on the side of the base 451 away from the mounting groove, and a pressure relief through hole 4512 is arranged at the center of the base 451.

[0063] The spring one 453 is arranged in the sink 4511, the plug plate 452 is arranged on the side of the base 451 away from the mounting groove, the spring one 453 is located between the base 451 and the plug plate 452, the two ends of the spring one 453 are fixedly connected with the base 451 and the plug plate 452 respectively, the plug plate 452 is fixedly connected with the plug block 454 at the center of the side close to the base 451, the position and size of the plug block 454 match those of the pressure relief through hole 4512, the plug block 454 is high at the outer circle and is concave at the center, a plurality of pressure relief holes one 4541 are arranged on the plug block 454, and the pressure relief holes one 4541 are arranged away from the plug plate 452;

[0064] The top plate 456 is arranged inside the pressure relief connector 411, the section of the top plate 456 is T-shaped, the end of the top plate 456 close to the plug block 454 is rod-shaped, a plurality of pressure relief holes two 4561 are arranged on the side of the top plate 456 away from the base 451, the rod-shaped part of the top plate 456 matches the shape and size of the center concave part of the plug block 454, the top plate 456 is slidably connected with the pressure relief connector 411, a plurality of spring two 455 are equidistantly arranged inside the pressure relief connector 411 along the circumferential direction of the pressure relief connector 411, one end of the spring two 455 is fixedly connected with the buffer tank 41, the other end of the spring two 455 is fixedly connected with the top plate 456, and the sealing cover 457 is arranged at the end of the pressure relief connector 411, the sealing cover 457 is detachably connected with the pressure relief connector 411, and the detachable connection modes include but are not limited to clamping, threaded connection and the like.

[0065] Based on the supplementary description of the above structure, the gas pressure in the buffer tank 41 is detected by the gas pressure gauge 42, when the gas pressure reaches a certain value, the buffer tank 41 needs to be relieved by manual operation, and the specific pressure limit is set by human. When relieving pressure, the sealing cover 457 is first detached from the pressure relief connector 411, then the connector to be connected is connected with the pressure relief connector 411, when connected, the connector inside will extrude the top plate 456, the spring two 455 is compressed, the top plate 456 moves to the side of the base 451, the rod-shaped part on the top plate 456 gradually contacts the plug block 454, and the plug block 454 is pushed away from the base 451, the spring one 453 is stretched, until the pressure relief holes one 4541 on the plug block 454 are separated from the pressure relief through hole 4512 and are in communication with the inside of the base 451, the high-pressure gas in the buffer tank 41 can be discharged through the pressure relief holes one 4541, the pressure relief through hole 4512 and the pressure relief holes two 4561, and the gas pressure in the buffer tank 41 is reduced to a safe range;

[0066] After the pressure relief is completed, the worker disconnects the joint connected with the pressure relief joint 411, the top plate 456 is no longer pressed by the joint, and the top plate 456 moves away from the base 451 under the action of the elastic force of the second spring 455, the pushing of the blocking block 454 is released, the first spring 453 is retracted, the blocking plate 452 moves to the base 451 under the action of the elastic force of the first spring 453, and the pressure relief hole 4512 is blocked. Then, the worker connects the sealing cover 457 with the pressure relief joint 411 to avoid accidental extrusion of the top plate 456, causing accidental pressure relief and safety hazards.

[0067] Specifically, as shown in Figures 4-6 The cooperative mechanism 5 includes two groups of fixed connecting rods 51, connecting rods 52 and limiting cylinders 53. The two groups of fixed connecting rods 51 are fixed to the top of the rotating shaft 25 of the pressure regulating mechanism 2 and the top of the rotating shaft 25 of the back pressure mechanism 3, respectively. The two ends of the connecting rod 52 are hingedly connected to the ends of the fixed connecting rod 51, respectively. The connecting rod 52 penetrates the limiting cylinder 53. The top of the limiting cylinder 53 is threadedly connected with a hand wheel 54. Rotating the hand wheel 54 can press and fix the position of the connecting rod 52 in the limiting cylinder 53, or release the fixing of the connecting rod 52, so that the connecting rod 52 can move inside the limiting cylinder 53. The limiting cylinder 53 is used to limit the movement range of the connecting rod 52, to avoid accidental rotation of the connecting rod 52, which may cause the rotating angle of the fixed connecting rod 51 to be too large, and damage the parts.

[0068] Based on the above supplementary description of the structure, when the pressure regulating mechanism 2 regulates the gas in the high-pressure side 11 pipeline, the special-shaped cam 26 rotates towards the inclined side of the special-shaped cam 26, Figure 4 clockwise, because the top of the rotating shaft 25 of the pressure regulating mechanism 2 is fixedly connected with the fixed connecting rod 51, and the other end of the fixed connecting rod 51 is hingedly connected with the connecting rod 52, the connecting rod 52 will tend to move towards the back pressure mechanism 3, driving the top of the rotating shaft 25 of the back pressure mechanism 3 to rotate counterclockwise with the fixed connecting rod 51, and further driving the special-shaped cam 26 in the back pressure mechanism 3 to rotate counterclockwise, so that the special-shaped cam 26 pushes the push plate 23 in the back pressure mechanism 3 and blocks the gas guide hole two 212, avoiding the communication between the back pressure mechanism 3 and the back gas pipe 14 when the pressure regulating mechanism 2 is regulating pressure. Similarly, when the special-shaped cam 26 in the back pressure mechanism 3 rotates clockwise, the rotating fixed connecting rod 51 can drive the connecting rod 52 to move towards the pressure regulating mechanism 2, so that the rotating shaft 25 in the pressure regulating mechanism 2 drives the special-shaped cam 26 to rotate counterclockwise, blocking the gas guide hole two 212 on the pressure regulating mechanism 2, ensuring the uniqueness of the pressure regulating and pressure relief of the pressure regulating mechanism 2 and the back pressure mechanism 3, and avoiding the simultaneous opening of the gas guide hole one 211 and the gas guide hole two 212 on the pressure regulating mechanism 2 and the back pressure mechanism 3, and the communication with the low-pressure side 12 and the high-pressure side 11.

[0069] Specifically, as shown in Figure 3 and Figure 4As shown, the support mechanism 6 includes a hoop 61 fixed to the bottom of the body 1 using fasteners, the side of the hoop 61 is fixedly connected with a support plate 62, a plurality of support seats 63 are fixedly connected on the support plate 62, the support seats 63 are fixedly connected with the pressure regulating bin 21 of the pressure regulating mechanism 2, the pressure regulating bin 21 of the back pressure mechanism 3 and the buffer tank 41, a support frame 64 is fixedly connected between the pressure regulating bin 21 of the pressure regulating mechanism 2 and the pressure regulating bin 21 of the back pressure mechanism 3, the limiting cylinder 53 is fixed to the top of the support frame 64, the support seats 63 and the support frame 64 are used to provide support for the pressure regulating mechanism 2, the back pressure mechanism 3, the temporary storage mechanism 4 and the coordination mechanism 5, thereby improving the stability thereof.

[0070] Specifically, as shown in the figure, Figure 1 As shown, the pressure regulating bin 21 of the pressure regulating mechanism 2, the pressure regulating bin 21 of the back pressure mechanism 3 and the buffer tank 41 of the temporary storage mechanism 4 are all fixedly connected with fins 7, the fins 7 are used to dissipate heat of the pressure regulating mechanism 2, the back pressure mechanism 3 and the temporary storage mechanism 4, so as to avoid that heat generated due to pressure change and environmental temperature change affect the dynamic pressure regulating effect.

[0071] The specific working principle of the safety anti-explosion type gas pressure regulator:

[0072] Normal pressure regulating state: The gas normally flows from the high-pressure side 11 to the low-pressure side 12 of the body 1, the pressure regulating mechanism 2 and the back pressure mechanism 3 are both in the initial state under the action of the torsion spring 27, that is, the special-shaped cam 26 blocks the gas guide hole two 212, and is not communicated with the temporary storage mechanism 4, and the pipe network pressure is stable.

[0073] Pressure relief process: when the user end valve is suddenly closed, a huge pressure shock wave is generated in the low-pressure side 12 pipeline, the pressure regulating mechanism 2 is started, the impact pressure is transmitted into the pressure regulating mechanism 2 through the gas guide pipe 13, the pressure regulating plate 22 is pushed to compress the push spring 24, the gas guide hole one 211 is opened, and the high-pressure gas enters the pressure regulating bin 21; the pressure of the gas entering the pressure regulating bin 21 simultaneously pushes the push plate 23 to move, the push plate 23 extrudes the special-shaped cam 26, so that the special-shaped cam 26 overcomes the force of the torsion spring 27 and rotates, thereby opening the gas guide hole two 212; the high-pressure gas in the pressure regulating bin 21 enters the temporary storage mechanism 4 through the gas guide hole two 212 and the gas inlet pipe 43 and is stored, thereby effectively relieving the instantaneous high pressure in the pipe network and protecting the body 1.

[0074] Back pressure process: when the low pressure side 12 impact pressure subsides, the pressure and the top spring 24 elastic force close to balance, the pressure plate 22 reset, re-seal the gas hole one 211; push plate 23 under the action of the top spring 24 retreat, extrusion force of the special-shaped cam 26 disappears, the special-shaped cam 26 under the action of torsion spring 27 automatically rotate, re-seal the gas hole two 212, the pressure regulating mechanism 2 returns to the initial state; if the pressure in the temporary storage mechanism 4 is too high, its high pressure can pass through the gas hole one 211 of the back pressure mechanism 3 into the back pressure warehouse, push the special-shaped cam 26 inside to rotate, open the gas hole two 212, make the stored gas flow back to the low pressure side 12 of the body 1 through the back gas pipe 14, realize the recovery of pressure energy, at the same time reduce the pressure of the cache box 41.

[0075] Collaboration and safety mechanism: through the connecting rod 52 connecting the rotating shaft 25 of the pressure regulating and back pressure mechanism, ensure that the two actions are mutually exclusive, when one mechanism opens the pressure relief, the other mechanism will be linked and locked in the closed state, prevent the high pressure side 11 and the low pressure side 12 through the two mechanisms directly connected, ensure the operation of single.

[0076] Manual pressure relief: when the gas pressure gauge 42 shows that the pressure of the cache box 41 exceeds the safety limit, the external pipeline can be manually connected to open the plug 454 and manually relieve pressure.

[0077] Through the above way, the instantaneous pressure impact generated by the high pressure side can be effectively inhibited and absorbed, the internal core regulating mechanism is protected, so as to improve the durability, running stability and service life of the gas pressure regulator.

[0078] It should be noted that in this paper, such as first and second relationship terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0079] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A safety explosion-proof gas pressure regulator, comprising a body (1), a pressure regulating mechanism (2), a back pressure mechanism (3), a temporary storage mechanism (4), a coordination mechanism (5) and a supporting mechanism (6), characterized in that, The supporting mechanism (6) is arranged on the body (1), the pressure regulating mechanism (2), the back pressure mechanism (3), the temporary storage mechanism (4) and the coordination mechanism (5) are all arranged on the supporting mechanism (6), and the pressure regulating mechanism (2), the temporary storage mechanism (4) and the back pressure mechanism (3) are sequentially arranged on one side of the body (1) in the counterclockwise direction. The pressure regulating mechanism (2) comprises a pressure regulating bin (21), a pressure regulating plate (22), a pushing plate (23) and a special-shaped cam (26), one end of the pressure regulating bin (21) is provided with a gas guide hole (211) at the center, and the other end is provided with a gas guide hole (212) at the center. A plurality of pressure regulating holes (221) are equidistantly arranged on the pressure regulating plate (22) along the circumferential direction of the gas guide hole (211), and a plurality of air permeation holes (231) are equidistantly arranged on the pushing plate (23) along the circumferential direction of the gas guide hole (211), and the pushing plate (23) is fixedly connected with the pushing spring (24) between the pressure regulating plate (22) and the pushing plate (23). The bearing of the pressure regulating bin (21) is connected with a rotating shaft (25), the special-shaped cam (26) is fixed on the rotating shaft (25), and the rotating shaft (25) is provided with a torsional spring (27). The special-shaped cam (26) is arranged in an inclined manner, one side of the special-shaped cam (26) close to the pushing plate (23) is in contact with the pushing plate (23), and the other side of the special-shaped cam (26) away from the pushing plate (23) is in contact with the pressure regulating bin (21), the pressure regulating bin (21) is provided with an arc-shaped groove (213) at the contact position with the special-shaped cam (26), the height of the arc-shaped groove (213) is the same as the thickness of the special-shaped cam (26) in the vertical direction, and the arc radius of the arc-shaped groove (213) matches the arc radius of the special-shaped cam (26) at the position. The special-shaped cam (26) is provided with two groups of air permeation grooves (261) and a buffer gas groove (262), the two groups of air permeation grooves (261) are located on the two sides of the special-shaped cam (26), the buffer gas groove (262) is located between the two groups of air permeation grooves (261), and the buffer gas groove (262) is located at the arc-shaped groove (213), the buffer gas groove (262) is arranged in an inclined manner, the inclined direction of the buffer gas groove (262) is opposite to the inclined direction of the long diameter direction of the special-shaped cam (26), the height of the air permeation groove (261) in the vertical direction is greater than the diameter of the gas guide hole (212), and the height of the buffer gas groove (262) in the vertical direction is between the diameter of the gas guide hole (212) and the thickness of the special-shaped cam (26).

2. The safety explosion-proof gas pressure regulator according to claim 1, characterized in that, The body (1) is provided with a high-pressure side (11) and a low-pressure side (12), the high-pressure side (11) of the body (1) is connected with a gas guide pipe (13), the gas guide pipe (13) is connected with the pressure regulating mechanism (2), and the low-pressure side (12) of the body (1) is connected with a gas return pipe (14), and the gas return pipe (14) is connected with the back pressure mechanism (3).

3. A safety explosion-proof gas pressure regulator according to claim 2, characterized in that The pressure regulating plate (22), the push plate (23) and the special-shaped cam (26) are sequentially arranged from one end of the pressure regulating chamber (21) provided with the air guide hole one (211) to the end provided with the air guide hole two (212), and the pressure regulating plate (22) and the push plate (23) are both in sliding connection with the pressure regulating chamber (21); The rotating shaft (25) is located on one side of the push plate (23) close to the air guide hole two (212), the top of the rotating shaft (25) penetrates through the top of the pressure regulating chamber (21), the side of the torsional spring (27) is fixedly connected with the inside of the pressure regulating chamber (21), and the end of the torsional spring (27) is fixedly connected with the special-shaped cam (26).

4. The safety explosion-proof gas pressure regulator according to claim 3, characterized in that, The pressure regulating mechanism (2) and the back pressure mechanism (3) are the same in structure and working principle, except that the setting direction of the back pressure mechanism (3) is opposite to that of the pressure regulating mechanism (2), and the air guide hole two (212) of the back pressure mechanism (3) is connected with the air return pipe (14).

5. A safety explosion-proof gas pressure regulator according to claim 4, characterized in that The temporary storage mechanism (4) comprises a buffer box (41), an air pressure gauge (42) and a pressure relief assembly (45), the air pressure gauge (42) is arranged on the top of the buffer box (41), one end of the buffer box (41) close to the pressure regulating mechanism (2) is provided with an air inlet pipe (43), the air inlet pipe (43) is connected with the air guide hole two (212) of the pressure regulating chamber (21) of the pressure regulating mechanism (2), one end of the buffer box (41) close to the back pressure mechanism (3) is provided with an air outlet pipe (44), the air outlet pipe (44) is connected with the air guide hole one (211) of the pressure regulating chamber (21) of the back pressure mechanism (3), and the pressure relief assembly (45) is located on the side of the buffer box (41) away from the body (1).

6. A safety anti-explosion type gas pressure regulator according to claim 5, wherein The pressure relief assembly (45) comprises a base (451), a blocking plate (452), a top plate (456) and a sealing cover (457), the buffer box (41) is fixed with a pressure relief joint (411) on the side away from the body (1), the buffer box (41) is internally provided with a mounting groove, the mounting groove corresponds to the position of the pressure relief joint (411), the base (451) is arranged in the mounting groove and is fixedly connected with the buffer box (41), a plurality of sinking grooves (4511) are arranged on the side of the base (451) away from the mounting groove, and a pressure relief through hole (4512) is arranged at the center of the base (451). The spring one (453) is arranged in the sinking groove (4511), the blocking plate (452) is arranged on the side of the base (451) away from the mounting groove, the spring one (453) is located between the base (451) and the blocking plate (452), the two ends of the spring one (453) are fixedly connected with the base (451) and the blocking plate (452), respectively, the blocking plate (452) is fixedly connected with a blocking block (454) at the center of the side close to the base (451), the blocking block (454) is high in outer circle and is concave at the center, and a plurality of pressure relief holes one (4541) are arranged on the blocking block (454) away from the blocking plate (452). The top plate (456) is arranged inside the pressure relief joint (411), one end of the top plate (456) near the plug (454) is rod-shaped, a plurality of pressure relief holes two (4561) are arranged on the side of the top plate (456) away from the base (451), the top plate (456) is in sliding connection with the pressure relief joint (411), a plurality of springs two (455) are equidistantly arranged inside the pressure relief joint (411) along the circumferential direction of the pressure relief joint (411), one end of the spring two (455) is fixedly connected with the buffer box (41), the other end of the spring two (455) is fixedly connected with the top plate (456), and the sealing cover (457) is arranged at the end of the pressure relief joint (411).

7. A safety explosion-proof gas pressure regulator according to claim 6, characterized in that, The cooperative mechanism (5) comprises two groups of fixed connecting rods (51), connecting rods (52) and limiting barrels (53), the two groups of fixed connecting rods (51) are fixed to the top of the rotating shaft (25) of the pressure regulating mechanism (2) and the top of the rotating shaft (25) of the back pressure mechanism (3) respectively, the two ends of the connecting rod (52) are hingedly connected with the ends of the fixed connecting rod (51) respectively, the connecting rod (52) penetrates through the limiting barrel (53), and the top of the limiting barrel (53) is threadedly connected with a hand wheel (54).

8. A safety anti-explosion type gas pressure regulator according to claim 7, characterized in that, The supporting mechanism (6) comprises a hoop (61), the hoop (61) is fixed to the bottom of the body (1) by using fasteners, the side of the hoop (61) is fixedly connected with a supporting plate (62), a plurality of supporting seats (63) are fixedly connected to the supporting plate (62), the supporting seats (63) are fixedly connected with the pressure regulating bin (21) of the pressure regulating mechanism (2), the pressure regulating bin (21) of the back pressure mechanism (3) and the buffer box (41), supporting frames (64) are fixedly connected between the pressure regulating bin (21) of the pressure regulating mechanism (2) and the pressure regulating bin (21) of the back pressure mechanism (3), and the limiting barrel (53) is fixed to the top of the supporting frame (64).

9. A safety anti-explosion type gas pressure regulator according to claim 8, characterized in that, The fins (7) are fixedly connected to the pressure regulating bin (21) of the pressure regulating mechanism (2), the pressure regulating bin (21) of the back pressure mechanism (3) and the buffer box (41) of the temporary storage mechanism (4).

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