CN110617354B - Automatic open circuit equipment for tap water pipeline leakage and pressure loss - Google Patents
Automatic open circuit equipment for tap water pipeline leakage and pressure loss Download PDFInfo
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- CN110617354B CN110617354B CN201910895986.6A CN201910895986A CN110617354B CN 110617354 B CN110617354 B CN 110617354B CN 201910895986 A CN201910895986 A CN 201910895986A CN 110617354 B CN110617354 B CN 110617354B
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- 239000008399 tap water Substances 0.000 title claims abstract description 54
- 235000020679 tap water Nutrition 0.000 title claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 26
- 210000001503 joint Anatomy 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 11
- 238000005381 potential energy Methods 0.000 description 11
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 238000003032 molecular docking Methods 0.000 description 2
- 208000034423 Delivery Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/071—Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/077—Arrangement of backflow preventing devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
- F16K15/028—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open the valve member consisting only of a predominantly disc-shaped flat element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/042—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with locking or disconnecting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0486—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with mechanical actuating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Check Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention provides a tap water pipeline leakage pressure-loss automatic circuit-breaking device, which comprises a conveying pipeline, an emergency stop valve, a one-way valve and an automatic trigger device, wherein the emergency stop valve is fixedly arranged at the input end of the conveying pipeline, the input end of the emergency stop valve is connected with a tap water source, the output end of the emergency stop valve is connected with the input end of the conveying pipeline, the one-way valve is fixedly arranged at the output end of the conveying pipeline, the input end of the one-way valve is connected with the output end of the conveying pipeline, the output end of the one-way valve is connected with a resident water taking point, the one-way valve is set to be in a plugging state and a conducting state which can be mutually switched, the initial state is a plugging state, the emergency stop valve is set to be mutually switched to an opening state and a closing state, the initial state is an opening state, the automatic trigger device is used for detecting the water pressure, the automatic trigger device comprises a pushing mechanism and a pressurizing mechanism used for supplying high-pressure gas to the pushing mechanism.
Description
Technical Field
The invention relates to the technical field of tap water pipeline transportation, in particular to tap water pipeline leakage and pressure loss automatic circuit breaking equipment.
Background
The tap water pipeline bears the important task of urban resident water consumption, mainly comprises a water pipe, a water pipe connector and a valve, and is used for conveying tap water purified and disinfected by a tap water plant to a resident home so as to facilitate the use of urban resident tap water, and the condition of tap water cut-off frequently occurs in real life, and mainly comprises two conditions, wherein the first condition is that a technician overhauls and maintains the tap water pipeline and actively closes a main water valve, and the second condition is that the tap water is accidentally burst due to long-term aging of the water pipe or other engineering construction excavation reasons, the tap water leaks in a large amount, the tap water pressure in the water pipe is insufficient, the pressure cannot meet the requirement of conveying the tap water to the resident home, and for the first condition, the tap water plant generally informs residents in corresponding areas in advance, so that the residents take emergency measures, and for the second condition, the automatic pressure-loss disconnection device for the tap water pipeline is ingenious in structure, simple in principle and capable of avoiding the tap water from leaking in a large amount.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide the leakage and pressure loss automatic circuit breaker for the tap water pipeline, which has the advantages of ingenious structure, simple principle and capability of avoiding the leakage of a large amount of tap water.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
An automatic cut-off device for tap water pipeline leakage and pressure loss comprises a conveying pipeline, an emergency stop valve, a one-way valve and an automatic trigger device, wherein the emergency stop valve is fixedly arranged at the input end of the conveying pipeline, the input end of the emergency stop valve is connected and communicated with a tap water source, the output is connected the switch-on with pipeline's input, check valve fixed mounting is in pipeline's output, the input of check valve and pipeline's output are connected the switch-on, the output is connected the switch-on with resident's water intaking point, but the shutoff state and the initial condition that the check valve set to mutual switching are the shutoff state, but the scram valve set to mutual switching to the open mode and the closed condition and the initial condition is the open mode, automatic triggering device is used for detecting the water pressure in the pipeline and automatic triggering makes the scram valve automatic switch to the closed condition by the open mode under the decompression state.
As a further optimization or improvement of the present solution.
The emergency stop valve comprises a first valve body, a first cylindrical valve cavity with an upward opening is arranged in the first valve body, an annular groove is coaxially formed in the opening of the first valve cavity, the diameter of the annular groove is larger than that of the first valve cavity, a first valve cover matched with the opening of the annular groove in a sealing connection mode is arranged at the opening of the annular groove, an input end of the first valve body is communicated with the first valve cavity in a connection mode, an inlet I is formed at the connection position, an output end of the first valve body is communicated with the first valve cavity in a connection mode, an outlet I is formed at the connection position, the inlet I and the outlet I are symmetrically arranged along the axis of the first valve cavity, a first cylindrical valve core matched with the first valve cavity in a sealing connection mode is arranged in the first valve cavity in a rotating mode, a first butt;
the coaxial fixed control main shaft that is provided with in the top of case one and the diameter of control main shaft is less than the diameter of case one, and the control main shaft includes extension section A and built-in section B and the diameter of extension section A is less than the diameter of built-in section B, and the activity of control main shaft extension section A passes valve gap one and extends to the outside, and the built-in section B of control main shaft is located the annular groove, coaxial cup joint is provided with the sleeve on the control main shaft extension section A and the sleeve constitutes the spline connection cooperation with extension section A, and the sleeve can slide towards its built-in section B along the extension section A of control main shaft, and the coaxial fixed knob that is provided with in telescopic top.
As a further optimization or improvement of the present solution.
The bottom end of the control main shaft built-in section B is sleeved with a rolled emergency stop spring, one end of the emergency stop spring is fixedly connected with the inner circular surface of the annular groove, the other end of the emergency stop spring is fixedly connected with the outer circular surface of the control main shaft built-in section B, the elasticity of the emergency stop spring drives the control main shaft to rotate clockwise all the time, the top end of the control main shaft built-in section B is coaxially sleeved with a limiting disc which is in spline connection and matching with the top end of the control main shaft, the limiting disc can slide downwards along the built-in section B of the control main shaft, the middle position of the control main shaft built-in section B along the axial direction of the control main shaft built-in section B is coaxially sleeved with a fixed disc, the outer part of the control main shaft built-in section B is movably sleeved with a floating spring, one end of the floating spring is, the emergency stop valve further comprises a rotation restraint assembly for restraining the rotation of the limiting disc, the rotation restraint assembly comprises an installation cylinder which is fixedly installed outside the valve body I and is radially arranged along the annular groove, the installation cylinder and the annular groove are coplanar, an ejector rod is coaxially and movably arranged in the installation cylinder in a penetrating mode and forms sliding guide fit along the radial direction of the annular groove, one end of the ejector rod extends into the annular groove, a tip is fixedly arranged at the end of the ejector rod, the other end of the ejector rod is located outside the valve body I, a limiting notch which penetrates through the outer circular surface of the limiting disc up and down is formed in the outer circular surface of the limiting disc, and the tip is matched with the limiting notch and is inserted;
the scram valve further comprises a rotary guide assembly, the rotary guide assembly comprises an arc-shaped limiting chute arranged on the inner circular surface of the annular groove and a limiting lug fixedly arranged on the outer circular surface of the limiting disc, the limiting chute extends ninety degrees clockwise along the circumferential direction of the annular groove, and the limiting lug is connected with the limiting chute in a clamped mode and forms sliding guide fit along the circumferential direction of the annular groove.
As a further optimization or improvement of the present solution.
The check valve comprises a tubular check valve body, a circular plugging plate is coaxially arranged in the inner cavity of the check valve body along the axial middle position of the inner cavity of the check valve body, a through hole is formed in the eccentric position of the plugging plate, a plurality of through holes are formed in the through hole and are arranged in an array along the circumferential direction of the plugging plate, a sliding rod is coaxially penetrated and slidably arranged on the plugging plate, the sliding rod and the plugging plate form sliding guide fit along the axial direction of the plugging plate, a first limit screw which is in threaded connection fit with the sliding rod is coaxially arranged at one end close to the input end of the check valve body, a circular sealing plate is coaxially and fixedly arranged at one end close to the output end of the check valve body, the radius of the sealing plate is larger than the maximum distance of the through hole from the central position of the plugging plate, a sealing spring is movably sleeved outside the sliding rod, the sealing plate is attached to the plugging plate in the initial state and used for sealing the through hole.
As a further optimization or improvement of the present solution.
The automatic trigger device comprises a pushing mechanism for driving the ejector rod to slide outwards along the radial direction of the annular groove and a pressurizing mechanism for supplying high-pressure gas to the pushing mechanism, a mounting lug is fixedly arranged outside the valve body I, the pushing mechanism is arranged on the mounting lug, the pressurizing mechanism is arranged on the one-way valve, the pushing mechanism comprises two guide rods which are fixedly provided with the mounting lug and parallel to the axial direction of the ejector rod, one end of each guide rod is fixedly connected with the mounting lug, the other end of each guide rod is coaxially and fixedly provided with a second limit screw which is in threaded connection and matched with the corresponding mounting lug, a rectangular trigger plate is sleeved on each guide rod, the length direction of the trigger plate is arranged along the distance direction between the ejector rod and the guide rod, the middle position of the trigger plate is sleeved on the guide rod, the two trigger plates form sliding guide matching along the axial direction parallel to the guide rod, one end of the trigger plate is, the outside movable sleeve of guide bar is equipped with pressure spring, and pressure spring one end is contradicted with two stop screws, and the other end is contradicted with the trigger plate and pressure spring's elasticity is the directional trigger plate by two stop screws all the time, and the trigger plate is used for promoting top grafting and spacing breach in.
As a further optimization or improvement of the present solution.
The pushing mechanism further comprises a cylinder body which is fixedly connected with the mounting lug and is axially parallel to the axial direction of the guide rod, one end of the cylinder body, which is far away from the trigger plate, is an open end, one end, which is close to the trigger plate, is a closed end, a cylinder cover which is in sealing connection and matching with the opening of the cylinder body is arranged at the opening of the cylinder body, a piston rod which is in sealing sliding guide matching with the cylinder body is arranged in the cylinder body, the piston rod comprises a piston and a push rod, one end of the push rod is coaxially and fixedly connected with the piston, the other end of the push rod extends outwards from the closed end of the cylinder body, the end of the push rod is aligned with the trigger plate along the axial direction of the cylinder body, the push rod and the closed end of the cylinder body form sealing sliding guide matching along the axial direction;
the utility model discloses a piston booster compressor, including push rod, piston, cylinder body, butt joint, exhaust hole two is provided with rather than constituting threaded connection complex sealed plug screw, booster mechanism's output and butt joint connection switch-on.
As a further optimization or improvement of the present solution.
The booster mechanism comprises a pressure loss detection valve body arranged at the opening of the cylindrical cavity and a high-pressure gas tank connected and communicated with the input end of the pressure loss detection valve body, a common valve for controlling the on-off of the high-pressure gas tank and the pressure loss detection valve body is arranged between the high-pressure gas tank and the input end of the pressure loss detection valve body, the common valve is in an open state under the initial state of the common valve, the output end of the pressure loss detection valve body is connected and communicated with a butt joint through a conduit, and the pressure loss detection valve body is in a closed state under the initial state and can be automatically switched to the open state under the pressure loss state of tap water in a conveying pipeline;
the pressure loss detection valve body comprises a second valve body fixedly arranged at the opening of a cylindrical cavity, the second valve body comprises a second valve cavity which is coaxially arranged in the cylindrical cavity and has an upward opening, the input end of the second valve body is communicated with the second valve cavity, the communicated part forms a second inlet, the output end of the second valve body is communicated with the second valve cavity, the communicated part forms a second outlet, the second inlet and the second outlet are symmetrically arranged along the axial direction of the second valve cavity, a second cylindrical valve core which forms a sealed sliding guide fit with the second valve core along the axial direction is arranged in the second valve cavity, a second butt joint hole which penetrates along the radial direction is formed in the second valve core, the second butt joint hole is used for connecting the second inlet and the second outlet, a floating rod is coaxially and fixedly arranged at the lower end of the second valve core, the floating rod movably penetrates through the bottom of the second valve body and extends into the cylindrical cavity, and a circular, the floating plug and the cylindrical cavity form sealed sliding guide fit along the axial direction of the cylindrical cavity, the floating plug floats to the opening of the cylindrical cavity under the action of tap water pressure, the two butting holes are positioned above the second inlet in an initial state, the distance between the two butting holes is equal to the distance between the floating plug and the bottom of the cylindrical cavity, a cap-shaped valve cover II matched with the opening of the second valve cavity is arranged at the opening of the second valve cavity, a pressing spring is movably arranged in the valve cover II, one end of the pressing spring is abutted against the valve cover II, the other end of the pressing spring is abutted against the valve core II, and the elastic force of the pressing spring is always directed to the valve core II from;
the top end of the second valve core is coaxially and fixedly provided with a fixing ring, the opening of the second valve cavity is provided with a guide groove which extends downwards in parallel to the axial direction of the second valve core, the outer circular surface of the fixing ring is provided with a guide block matched with the guide groove, and the guide block is matched with the guide groove and forms sliding guide fit along the axial direction parallel to the second valve cavity.
Compared with the prior art, the automatic pressure-reducing emergency stop valve has the advantages that the structure is ingenious, the principle is simple, the emergency stop valve is arranged at the input end of the conveying pipeline, the one-way valve is arranged at the output end of the conveying pipeline, when the conveying pipeline is in pressure loss due to tap water leakage, the automatic trigger device enables the emergency stop valve to be automatically switched from the open state to the closed state, the tap water leakage is avoided greatly, and the tap water resource is saved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is a matching diagram of the delivery pipeline, the emergency stop valve and the check valve.
Fig. 4 is a schematic view of a structure of the scram valve.
Fig. 5 is a cross-sectional view of the first valve body.
Fig. 6 is an exploded view of the slam-stop valve.
Fig. 7 is a structural schematic diagram of the first valve core.
FIG. 8 is a connection diagram of the knob and the first valve core.
FIG. 9 is a connection diagram of the knob and the first valve core.
Fig. 10 is a schematic view of the internal structure of the quick-stop valve.
Fig. 11 is a schematic structural view of the rotation restricting assembly.
Fig. 12 is a schematic structural view of the rotation guide assembly.
Fig. 13 is an internal structural view of the check valve in a closed state.
Fig. 14 is an internal structural view showing the on state of the check valve.
Fig. 15 is an exploded view of the check valve.
Fig. 16 is a view of the engagement between the pushing mechanism and the rotation restricting assembly.
Fig. 17 is a view of the engagement between the pushing mechanism and the rotation restricting assembly.
Fig. 18 is a schematic structural view of the pushing mechanism.
Fig. 19 is a sectional view of the pushing mechanism.
Fig. 20 is a partial structural schematic view of the pushing mechanism.
Fig. 21 is a diagram showing the pressurization mechanism and the check valve.
Fig. 22 is a diagram showing the pressurization mechanism and the check valve.
Fig. 23 is a schematic view of the internal structure of the pressure loss detection valve.
Fig. 24 is a partial structural view of the pressure loss detection valve.
Fig. 25 is a partial structural view of the pressure loss detection valve.
Labeled as:
100. a delivery conduit;
200. a hard stop valve; 201. a first valve body; 202. a first valve cavity; 203. an annular groove; 204. a first valve cover; 205. an inlet I; 206. an outlet I; 207. a first valve core; 208. a first butt joint hole; 209. controlling the main shaft; 210. a knob; 211. stopping the spring suddenly; 212. fixing the disc; 213. a limiting disc; 214. a floating spring; 215. a limiting notch; 216. mounting the cylinder; 217. a top rod; 218. a tip; 219a, a limit chute; 219b, a limit bump;
300. a one-way valve; 301. a check valve body; 302. a plugging plate; 303. a through hole; 304. a slide bar; 305. a sealing plate; 306. a first limit screw; 307. a seal spring; 310. a cylindrical cavity;
400. an automatic triggering device; 410. a pushing mechanism; 411. a guide bar; 412. a second limit screw; 413. a trigger plate; 414. a compression spring; 415a, a cylinder block; 415b, a cylinder cover; 416. a piston rod; 416a, a piston; 416b, a push rod; 417a, exhaust hole one; 417b, an exhaust groove; 418. a return spring; 419a, a butt joint; 419b, sealing screw plugs; 420. a pressurization mechanism; 421. a second valve body; 422. a second valve cavity; 423. an inlet II; 424. an outlet II; 425. a second valve core; 426. a second butt joint hole; 427a, a floating rod; 427b, a floating plug; 428a and a valve cover II; 428b, a down spring; 429a, a fixed ring; 429b, guide grooves; 429b, guide blocks; 430. a high pressure gas tank; 431. a common valve.
Detailed Description
An automatic cut-off device for tap water pipeline leakage and pressure loss comprises a conveying pipeline 100, a sudden stop valve 200, a one-way valve 300 and an automatic trigger 400, wherein the sudden stop valve 200 is fixedly arranged at the input end of the conveying pipeline 100, the input end of the sudden stop valve 200 is connected and communicated with a tap water source, the output end is connected with the input end of the conveying pipeline 100, the check valve 300 is fixedly installed at the output end of the conveying pipeline 100, the input end of the check valve 300 is connected with the output end of the conveying pipeline 100, the output end of the check valve is connected with a resident water taking point, the check valve 300 is set to be in a plugging state and a conducting state which can be mutually switched, the initial state is the plugging state, the emergency stop valve 200 is set to be in an opening state and a closing state which can be mutually switched, the initial state is the opening state, and the automatic trigger device 400 is used for detecting the water pressure in the conveying pipeline 100 and automatically triggers the emergency stop valve 200 to be automatically switched from the opening state to the closing state under the pressure loss state.
In the process of conveying tap water, a tap water plant pressurizes the tap water and enters the conveying pipeline 100 through the emergency stop valve 200, under the action of the pressure of the tap water, the one-way valve 300 is automatically switched from a blocking state to a conducting state under the action of the water pressure, the tap water flows to a resident water taking point through the one-way valve 300 to be normally used by the resident, if the conveying pipeline 100 needs to be overhauled and maintained, a user can manually switch the emergency stop valve 200 to the closing state, after the overhaul and maintenance, the emergency stop valve 200 is manually switched to the opening state, if the conveying pipeline 100 is accidentally broken to cause a large amount of tap water to leak, the tap water in the conveying pipeline 100 is decompressed to cause the one-way valve 300 to be automatically switched from the conducting state to the blocking state, and meanwhile, the automatic trigger device 400 detects that the tap water in the conveying pipeline 100 is in a decompression state and causes the emergency stop valve 200 to be automatically switched from the opening state, further water supply to the delivery conduit 100 from the mains water supply is cut off.
During the use of the scram valve 200, on one hand, the requirement that a user manually switches the scram valve 200 between the open state and the closed state is met, and on the other hand, the requirement that the scram valve 200 can automatically switch from the open state to the closed state when the conveying pipeline 100 is broken is met, for this reason, the scram valve 200 comprises a valve body I201, a cylindrical valve cavity I202 with an upward opening is arranged in the valve body I201, an annular groove 203 is coaxially arranged at the opening of the valve cavity I202, the diameter of the annular groove 203 is larger than that of the valve cavity I202, a valve cover I204 which is in sealing connection and matching with the opening of the annular groove 203 is arranged at the opening of the annular groove 203, the input end of the valve body I201 is connected and communicated with the valve cavity I202, an inlet I205 is formed at the connection, the output end of the valve body I201 is connected and communicated with the valve cavity I202, an outlet, the first valve cavity 202 is rotatably provided with a first cylindrical valve core 207 which is in sealing connection and matching with the first cylindrical valve core, a first abutting hole 208 which penetrates through the first valve core 207 along the radial direction is formed in the outer circular surface of the first valve core 207, the first abutting hole 208 is used for communicating the first inlet 205 with the first outlet 206, and the first abutting hole 208, the first inlet 205 and the first outlet 206 are deviated by controlling the rotation of the first valve core 207, so that the scram valve 200 is switched to a closed state.
Specifically, in order to drive the valve element 207 to rotate, a control main shaft 209 is coaxially and fixedly arranged at the top of the valve element 207, the diameter of the control main shaft 209 is smaller than that of the valve element 207, the control main shaft 209 comprises an extension section a and a built-in section B, the diameter of the extension section a is smaller than that of the built-in section B, the extension section a of the control main shaft 209 movably penetrates through the valve cover one 204 and extends to the outside, the built-in section B of the control main shaft 209 is located in the annular groove 203, a sleeve is coaxially sleeved on the extension section a of the control main shaft 209 and forms spline connection and matching with the extension section a, the sleeve can slide towards the built-in section B of the control main shaft 209 along the extension section a of the control main shaft 209, a knob 210 is coaxially and fixedly arranged at the top of the sleeve, and a user rotates the knob 210 clockwise by ninety degrees to make the butt joint hole one 208 dislocate with the inlet, the user switches the slam-stop valve 200 to the open state by manually turning the knob ninety degrees counterclockwise, aligning the first docking aperture 208 with the first inlet 205 and the first outlet 206.
More specifically, in order to enable the scram valve 200 to be automatically switched from an open state to a closed state, the bottom end of the built-in section B of the control spindle 209 is sleeved with a coiled scram spring 211, one end of the scram spring 211 is fixedly connected with the inner circular surface of the annular groove 203, the other end of the scram spring 211 is fixedly connected with the outer circular surface of the built-in section B of the control spindle 209, the control spindle 209 is always driven by the elastic force of the scram spring 211 to rotate clockwise, in order to overcome the elastic force of the scram spring 211 to enable the scram valve 200 to maintain the open state, the top end of the built-in section B of the control spindle 209 is coaxially sleeved with a limiting disc 213 which forms a spline connection fit with the built-in section B of the control spindle 209, the limiting disc 213 can slide downwards along the built-in section B of the control spindle 209, the middle position of the built-in section, one end of a floating spring 214 is abutted against the fixed disc 212, the other end of the floating spring is abutted against the limiting disc 213, the elastic force of a return spring 214 is always directed to the limiting disc 213 from the fixed disc 212, the bottom end of the sleeve movably penetrates through a first valve cover 204 to be abutted against the upper end face of the limiting disc 213, and the clockwise rotation of the limiting disc 213 is restrained to realize the clockwise rotation restraint of the control main shaft 209, therefore, the scram valve 200 further comprises a rotation restraint assembly for restraining the rotation of the limiting disc 213, the rotation restraint assembly comprises a mounting cylinder 216 fixedly mounted outside the first valve body 201 and radially arranged along the annular groove 203, the mounting cylinder 216 and the annular groove 203 are coplanar, a push rod 217 is coaxially and movably penetrated in the mounting cylinder 216 and forms sliding guide fit along the radial direction of the annular groove 203, one end of the push rod 217 extends into the annular groove 203, a tip 218 is fixedly arranged at the end part, and the other end, the outer circular surface of the limiting disc 213 is provided with a limiting notch 215 which penetrates through the limiting disc from top to bottom, the tip 218 is matched with the limiting notch 215, the tip 218 is inserted into the limiting notch 215 in an initial state, and the rotation of the limiting disc 213 is restricted through the rotation restricting assembly.
More specifically, in order to enable the control spindle 209 to drive the first spool 207 to rotate within a range of ninety degrees, the scram valve 200 further includes a rotation guide assembly, the rotation guide assembly includes an arc-shaped limiting chute 219a disposed on an inner circumferential surface of the annular groove 203 and a limiting protrusion 219b fixedly disposed on an outer circumferential surface of the limiting disc 213, the limiting chute 219a extends clockwise by ninety degrees along a circumferential direction of the annular groove 203, the limiting protrusion 219b is clamped in the limiting chute 219a, and the two are in sliding guide fit along the circumferential direction of the annular groove 203.
The scram valve 200 is closed and opened under a normal state, and is characterized in that when the scram valve 200 needs to be switched to a closed state, a user manually presses a knob 210 to drive a sleeve to vertically slide downwards along an extension section A of a control spindle 209, the sleeve pushes a limiting disc 213 to slide downwards along a built-in section B of the control spindle 209 against the elastic force of a floating spring 214, the floating spring 214 is gradually compressed and increases elastic potential energy, a limiting notch 215 is separated from a tip 218, a rotation limiting assembly releases the rotation restriction of the limiting disc 213, at the moment, the elastic potential energy of a scram spring 211 is released and drives the control spindle 209 to rotate ninety degrees clockwise, the control spindle 209 drives a valve core I207 to synchronously rotate and make a butt joint hole I208 staggered with an inlet I205 and an outlet I206, the scram valve 200 is switched to a closed state, and when the scram valve 200 needs to be switched to an open state, the user overcomes the elastic potential energy of the emergency stop spring 211 to enable the control spindle 209 to rotate ninety degrees anticlockwise, the limiting notch 215 is aligned with the tip 218, the floating spring 214 pushes the limiting disc 213 to slide upwards along the built-in section B of the control spindle 209 to reset, the tip 218 is combined with the limiting notch 215, the rotation limiting assembly restores the rotation limitation of the limiting disc 213, in the process, the butt joint hole 208 is aligned with the inlet one 205 and the outlet one 206, and the emergency stop valve 211 is switched to the open state.
The emergency stop valve 200 is closed and opened in an emergency state, and specifically, when the conveying pipeline 100 is accidentally broken, the automatic trigger device 400 pulls the ejector rod 217 to slide outwards along the radial direction of the annular groove 203, the ejector rod 217 separates the driving tip 218 from the limiting notch 215, the rotation limiting assembly releases the limitation on the limiting disc 213, at the moment, the elastic potential energy of the emergency stop spring 211 is released and drives the control spindle 209 to rotate ninety degrees clockwise, the control spindle 209 drives the valve core I207 to synchronously rotate and stagger the butt joint hole I208 with the inlet I205 and the outlet I206, and the emergency stop valve 200 is automatically switched to a closed state; after the conveying pipeline 100 is repaired, a user manually presses the knob 210 to enable the limiting disc 213 to overcome the elastic force action of the floating spring 214 to slide downwards along the built-in section B of the control spindle 209, then the automatic trigger device 400 drives the ejector rod 217 to slide inwards along the radial direction of the annular groove 203 to reset, then the user overcomes the elastic potential energy of the emergency stop spring 211 to enable the control spindle 209 to rotate ninety degrees anticlockwise to enable the limiting notch 215 to be aligned with the tip 218, the floating spring 214 pushes the limiting disc 213 to slide upwards along the built-in section B of the control spindle 209 to reset, the tip 218 is combined with the limiting notch 215, the rotary limiting assembly restores to restrict the rotation of the limiting disc 213, in the process, the butt joint hole 208 is aligned with the first inlet 205 and the first outlet 206, and the emergency stop valve 211 is switched to the open state.
The check valve 300 comprises a tubular check valve body 301, a circular blocking plate 302 is coaxially arranged in the inner cavity of the check valve body 301 along the axial middle position of the inner cavity of the check valve body 301, a through hole 303 is formed in the eccentric position of the blocking plate 302, a plurality of through holes 303 are formed in the through holes 303 and are arranged in an array mode along the circumferential direction of the blocking plate 302, a sliding rod 304 coaxially penetrates through the blocking plate 302 in a sliding mode, the sliding rod 304 and the blocking plate 302 form sliding guide fit along the axial direction of the sliding rod 304, a first limit screw 306 in threaded connection fit with the sliding rod 304 is coaxially arranged at one end, close to the input end of the check valve body 301, of the sliding rod 304, a circular sealing plate 305 is coaxially and fixedly arranged at one end, close to the output end of the check valve body 301, the radius of the sealing plate 305 is larger than the maximum distance of the through hole 303, the center position of the blocking plate 302 is deviated from the through 306, the sealing plate 305 is attached to the sealing plate 302 in the initial state and the sealing plate 305 is used to seal the through hole 303.
In the working process of the check valve 300, tap water enters the conveying pipeline 100 from the emergency stop valve 200 and has certain water pressure, the water pressure of the tap water overcomes the elastic force of the sealing spring 307 to push the sealing plate 305 to slide away from the blocking plate 302, the sealing spring 307 is gradually compressed and the elastic potential energy is increased, the sealing plate 305 generates a gap with the blocking plate 302 and the sealing plate 305 unblocks the through hole 303, and at the moment, the tap water is discharged from the conveying pipeline 100 to the output end of the check valve body 301 through the through hole 303; when the conveying pipeline 100 is accidentally broken, a large amount of tap water in the conveying pipeline 100 leaks and loses pressure, the pressure of the tap water is sharply reduced, the elastic potential energy of the sealing spring 307 is gradually released and pushes the sealing plate 305 to be tightly attached to the auxiliary plate 302, the sealing plate 305 restores the sealing of the through hole 303, and the one-way valve 300 is switched from the conducting state to the blocking state.
The automatic triggering device 400 comprises a pushing mechanism 410 for driving the push rod 217 to slide outwards along the radial direction of the annular groove 203, and a pressurizing mechanism 420 for supplying high-pressure gas to the pushing mechanism 410, wherein an installation convex block is fixedly arranged outside the valve body I201, the pushing mechanism 410 is arranged on the installation convex block, the pressurizing mechanism 420 is arranged on the one-way valve 300, the pushing mechanism 410 comprises a guide rod 411 which is fixedly provided with the installation convex block and is parallel to the axial direction of the push rod 217, two guide rods 411 are arranged in parallel, one end of the guide rod 411 is fixedly connected with the installation convex block, the other end of the guide rod 411 is coaxially and fixedly provided with a second limit screw 412 which forms threaded connection matching with the guide rod, the guide rod 411 is sleeved with a rectangular triggering plate 413, the length direction of the triggering plate 413 is arranged along the distance direction between the push rod 217 and the guide rod 411, the middle position of the triggering plate 413 is sleeved on the guide rod 411 and forms sliding, one end of the trigger plate 413 is fixedly connected with one end, away from the center 218, of the ejector rod 217, the compression spring 414 is movably sleeved outside the guide rod 411, one end of the compression spring 414 abuts against the second limit screw 412, the other end of the compression spring abuts against the trigger plate 413, the elastic force of the compression spring 414 always points to the trigger plate 413 through the second limit screw 412, the trigger plate 413 is used for pushing the center 218 to be inserted into the limit notch 215, if the center 218 is required to be automatically separated from the limit notch 215, the trigger plate 413 needs to be pushed to overcome the elastic force of the compression spring 414 to slide close to the second limit screw 412, and the trigger plate 413 drives the ejector rod 217 to slide outwards along the radial direction of the annular groove 203, so that the center.
Specifically, in order to push the trigger plate 413 to slide along the guide rod 411 and close to the second limit screw 412, the pushing mechanism 410 further includes a cylinder body 415a fixedly connected to the mounting protrusion and axially parallel to the axial direction of the guide rod 411, one end of the cylinder body 415a away from the trigger plate 413 is an open end, one end of the cylinder body 415a close to the trigger plate 413 is a closed end, a cylinder cover 415b hermetically connected and matched with the opening of the cylinder body 415a is provided, a piston rod 416 hermetically slidably matched with the cylinder body 415a is provided in the cylinder body 415a, the piston rod 416 includes a piston 416a and a push rod 416b, one end of the push rod 416b is coaxially and fixedly connected with the piston 416a, the other end of the push rod 416b extends outwards from the closed end of the cylinder body 415a and is aligned with the closed end of the trigger plate 413 in the axial direction of the cylinder body 415a, the push rod 416b and the, in an initial state, the piston 416a is arranged close to the cylinder cover 415b, a first air chamber is formed between the piston 416a and the cylinder cover 415b, and a second air chamber is formed between the piston 416b and the closed end of the cylinder body 415a, and the push rod 416b slides outwards and pushes against the trigger plate 413 by injecting high-pressure air into the first air chamber.
More specifically, in order to facilitate the air in the air chamber two to be discharged outwards, the push rod 416b is arranged in a hollow manner, a first exhaust hole 417a communicated with an inner cavity of the push rod 416b is formed in the outer circular surface of the push rod 416b, the first exhaust hole 417a is arranged close to the piston 416a, an exhaust groove 417b penetrating along the radial direction of the push rod 416b is formed in one end of the push rod 416b, which is away from the piston 416a, the exhaust groove 417b is communicated with the inner cavity of the push rod 416b, in order to facilitate the piston rod 416 to be reset in a sliding manner close to the cylinder cover 415b, a return spring 418 is movably sleeved outside the push rod 416b, one end of the return spring 418 abuts against the piston 416a, the other end of the return spring abuts against the closed end of the cylinder body 415a, the elastic force of the return spring 418 always points to the piston 416a from the closed end of the cylinder body 415, the butt joint 419a is provided with a second exhaust hole communicated with the interior of the butt joint 419a, the second exhaust hole is provided with a sealing screw plug 419b in threaded connection and matching with the second exhaust hole, and the output end of the pressurization mechanism 420 is communicated with the butt joint 419 a.
In the working process of the abutting mechanism 410, in an emergency state, when the pressurizing mechanism 420 supplies high-pressure gas to the first air chamber, the piston rod 416 slides along the cylinder body 415a away from the cylinder cover 415b, the return spring 418 is gradually compressed and the elastic potential energy is gradually increased, the compressed gas in the second air chamber is discharged into the air through the first exhaust hole 417a and the exhaust groove 417b, the push rod 416b abuts against the trigger plate 413 and pushes the trigger plate 413 to slide towards the second limit screw 412 under the action of the elastic force of the compression spring 414, the trigger plate 413 drives the push rod 217 to slide outwards along the radial direction of the annular groove 203, the push rod 217 drives the tip 218 to be separated from the limit notch 215, so that the emergency stop valve 200 is emergently switched to a closed state, after the emergency state is eliminated, the pressurizing mechanism 420 stops supplying high-pressure gas to the first air chamber, at the moment, the seal screw plug 419b is opened, the elastic potential energy of the return spring 418 is released and pushes the piston rod 416, the compressed gas in the first air chamber is discharged outwards through the second exhaust hole, and finally the sealing screw plug 419b is tightly plugged in the second exhaust hole, in the process, the elastic potential energy of the compression spring 414 is released and pushes the trigger plate 413 to slide away from the second limit screw 412, the trigger plate 413 drives the ejector rod 217 to slide inwards along the radial direction of the annular groove 203, and the ejector rod 217 drives the tip 218 to reset.
In order to supply high-pressure gas to the first gas chamber when the conveying pipeline 100 is accidentally broken, a cylindrical cavity 310 communicated with the inner cavity of the one-way valve body 301 is arranged on the outer circumferential surface of the one-way valve body 301, the upper end opening of the cylindrical cavity 310 is arranged, the lower end of the cylindrical cavity is communicated with the one-way valve body 301, the communicated position is close to the input end of the one-way valve body 301, the pressurization mechanism 420 comprises a pressure loss detection valve body arranged at the opening of the cylindrical cavity 310 and a high-pressure gas tank 430 connected and communicated with the input end of the pressure loss detection valve body, a common valve 431 for controlling the on-off of the high-pressure gas tank 430 and the pressure loss detection valve body is arranged between the high-pressure gas tank 430 and the input end of the pressure loss detection valve body, the common valve 431 is in an open state in an initial state, the output end of the pressure loss detection valve body is connected and communicated with the butt joint 419a through a conduit, and the pressure loss detection valve body is in a closed state in the initial state and can be automatically switched to an open state in the pressure loss.
Specifically, the pressure loss detection valve body comprises a second valve body 421 fixedly installed at an opening of a cylindrical cavity 310, the second valve body 421 comprises a second valve cavity 422 with an upward opening and coaxially arranged with the cylindrical cavity 310, an input end of the second valve body 421 is communicated with the second valve cavity 422, an inlet 423 is formed at the communicated position, an output end of the second valve body 421 is communicated with the second valve cavity 42, an outlet 424 is formed at the communicated position, the inlet 423 and the outlet 423 are axially and symmetrically arranged along the second valve cavity 422, a second cylindrical valve core 425 forming a sealed sliding guide fit with the second valve cavity 422 along the axial direction is arranged in the second valve cavity 422, a second abutting hole 426 radially penetrating through the second valve core 425 is formed in the second valve core 425, the second abutting hole 426 is used for connecting the inlet 423 and the outlet 424, a floating rod 427a is coaxially and fixedly arranged at the lower end of the second valve core 425, the floating rod 427a movably penetrates through the bottom of the second valve body 421 and extends, the extending end of the floating installation 427a is coaxially and fixedly provided with a circular floating plug 427b matched with the cylindrical cavity 310, the floating plug 427b and the cylindrical cavity 310 form a sealing sliding guide fit along the axial direction of the cylindrical cavity 310, the floating plug 427 floats to the opening of the cylindrical cavity 310 under the pressure of tap water, the second butt-joint hole 426 is positioned above the second inlet 423 in the initial state and the distance between the two is equal to the distance between the floating plug 427b and the bottom of the cylindrical cavity 310, when the tap water is depressurized, in order to make the floating plug 427b float downward and align the second docking hole 426 with the second inlet 423 and the second outlet 424, a cap-shaped valve cover second 428a matched with the valve cavity second 422 is arranged at the opening of the valve cavity second 422, a pressing spring 428b is movably arranged in the valve cover second 428a, one end of the pressing spring 428b is abutted against the valve cover second 428a, the other end of the pressing spring 428b is abutted against the valve core second 425, and the elastic force of the pressing spring 428b is always directed to the valve core second 425 from the valve cover second 428 a.
More specifically, in order to prevent the valve core two 425 from rotating in the process of sliding up and down along the valve cavity two 422, the abutting hole two 426 is offset from the inlet two 423 and the outlet two 424, so that the abutting hole two 426 cannot connect the inlet two 423 and the outlet two 424, for this purpose, the top end of the valve core two 425 is coaxially and fixedly provided with a fixing ring 429a, the opening of the valve cavity two 422 is provided with a guide groove 429b extending downwards in parallel with the axial direction of the valve core two 422, the outer circular surface of the fixing ring 429a is provided with a guide block 429c matched with the guide groove 429b, and the guide block 429c is matched with the guide groove 429b and forms a sliding guide fit in the axial direction parallel with the valve cavity two 422.
During the operation of the pressurization mechanism 420, when the delivery pipe 100 is accidentally broken, a large amount of tap water in the delivery pipe 100 leaks and causes tap water to lose pressure, the pressure of the tap water on the floating plug 427b is relieved, at this time, the elastic potential energy of the downward pressure spring 428b is gradually released and pushes the valve core two 425 to vertically slide downwards along the valve cavity two 422 until the butt joint hole two 426 is aligned with the inlet two 423 and the outlet two 424, the pressure loss detection valve is switched to the open state, the high-pressure gas in the high-pressure gas tank 430 enters the gas chamber one through the input end, the output end and the conduit of the valve body 421, the pushing mechanism 410 causes the scram valve 200 to be automatically switched to the closed state, after the delivery pipe 100 is repaired, the common valve 431 is firstly closed, the sealing screw plug 419b is opened, the pushing mechanism 410 is automatically reset, then, the user manually switches the scram valve 200 to the open state, the pipe 100 resumes normal delivery of the tap water, the tap water pressure loss floats the floating plug 427b upward to be reset and switches the pressure loss detection valve to a closed state, and finally the normal valve 431 is opened again.
Claims (1)
1. The utility model provides a tap water pipeline leaks decompression automatic cutout equipment which characterized in that: the emergency stop valve is fixedly arranged at the input end of the conveying pipeline, the input end of the emergency stop valve is connected and communicated with a tap water source, the output end of the emergency stop valve is connected and communicated with the input end of the conveying pipeline, the one-way valve is fixedly arranged at the output end of the conveying pipeline, the input end of the one-way valve is connected and communicated with the output end of the conveying pipeline, the output end of the one-way valve is connected and communicated with a water taking point, the one-way valve is set to be in a plugging state and a conducting state which can be mutually switched, the initial state is a plugging state, the emergency stop valve is set to be mutually switched to an opening state and a closing state and the initial state is an opening state, and the automatic trigger device is used for detecting water pressure in the conveying pipeline and automatically triggers the emergency stop valve to automatically switch from the;
the emergency stop valve comprises a first valve body, a first cylindrical valve cavity with an upward opening is arranged in the first valve body, an annular groove is coaxially formed in the opening of the first valve cavity, the diameter of the annular groove is larger than that of the first valve cavity, a first valve cover matched with the opening of the annular groove in a sealing connection mode is arranged at the opening of the annular groove, an input end of the first valve body is communicated with the first valve cavity in a connection mode, an inlet I is formed at the connection position, an output end of the first valve body is communicated with the first valve cavity in a connection mode, an outlet I is formed at the connection position, the inlet I and the outlet I are symmetrically arranged along the axis of the first valve cavity, a first cylindrical valve core matched with the first valve cavity in a sealing connection mode is arranged in the first valve cavity in a rotating mode, a first butt;
the top of the first valve core is coaxially and fixedly provided with a control main shaft, the diameter of the control main shaft is smaller than that of the first valve core, the control main shaft comprises an extension section A and a built-in section B, the diameter of the extension section A is smaller than that of the built-in section B, the extension section A of the control main shaft movably penetrates through the first valve cover to extend to the outside, the built-in section B of the control main shaft is positioned in the annular groove, the extension section A of the control main shaft is coaxially sleeved with a sleeve, the sleeve and the extension section A form spline connection and match, the sleeve can slide towards the built-in section B of the control main shaft along the extension section A of the control main shaft;
the bottom end of the control main shaft built-in section B is sleeved with a rolled emergency stop spring, one end of the emergency stop spring is fixedly connected with the inner circular surface of the annular groove, the other end of the emergency stop spring is fixedly connected with the outer circular surface of the control main shaft built-in section B, the elasticity of the emergency stop spring drives the control main shaft to rotate clockwise all the time, the top end of the control main shaft built-in section B is coaxially sleeved with a limiting disc which is in spline connection and matching with the top end of the control main shaft, the limiting disc can slide downwards along the built-in section B of the control main shaft, the middle position of the control main shaft built-in section B along the axial direction of the control main shaft built-in section B is coaxially sleeved with a fixed disc, the outer part of the control main shaft built-in section B is movably sleeved with a floating spring, one end of the floating spring is, the emergency stop valve further comprises a rotation restraint assembly for restraining the rotation of the limiting disc, the rotation restraint assembly comprises an installation cylinder which is fixedly installed outside the valve body I and is radially arranged along the annular groove, the installation cylinder and the annular groove are coplanar, an ejector rod is coaxially and movably arranged in the installation cylinder in a penetrating mode and forms sliding guide fit along the radial direction of the annular groove, one end of the ejector rod extends into the annular groove, a tip is fixedly arranged at the end of the ejector rod, the other end of the ejector rod is located outside the valve body I, a limiting notch which penetrates through the outer circular surface of the limiting disc up and down is formed in the outer circular surface of the limiting disc, and the tip is matched with the limiting notch and is inserted;
the emergency stop valve also comprises a rotation guide assembly, the rotation guide assembly comprises an arc-shaped limiting chute arranged on the inner circular surface of the annular groove and a limiting lug fixedly arranged on the outer circular surface of the limiting disc, the limiting chute clockwise extends ninety degrees along the circumferential direction of the annular groove, the limiting lug is clamped in the limiting chute, and the limiting chute and the limiting lug form sliding guide fit along the circumferential direction of the annular groove;
the check valve comprises a tubular check valve body, a circular plugging plate is coaxially arranged in the inner cavity of the check valve body along the axial middle position of the inner cavity of the check valve body, a through hole is formed in the eccentric position of the plugging plate, a plurality of through holes are formed in the through hole and are arranged in an array along the circumferential direction of the plugging plate, a sliding rod is coaxially penetrated and slidably arranged on the plugging plate, the sliding rod and the plugging plate form sliding guide fit along the axial direction of the plugging plate, a first limit screw which is in threaded connection fit with the sliding rod is coaxially arranged at one end close to the input end of the check valve body, a circular sealing plate is coaxially and fixedly arranged at one end close to the output end of the check valve body, the radius of the sealing plate is larger than the maximum distance of the through hole from the central position of the plugging plate, a sealing spring is movably sleeved outside the sliding rod, the sealing plate is attached to the plugging plate in an initial state and used for sealing the through hole;
the automatic trigger device comprises a pushing mechanism for driving the ejector rod to slide outwards along the radial direction of the annular groove and a pressurizing mechanism for supplying high-pressure gas to the pushing mechanism, a mounting lug is fixedly arranged outside the valve body I, the pushing mechanism is arranged on the mounting lug, the pressurizing mechanism is arranged on the one-way valve, the pushing mechanism comprises two guide rods which are fixedly provided with the mounting lug and parallel to the axial direction of the ejector rod, one end of each guide rod is fixedly connected with the mounting lug, the other end of each guide rod is coaxially and fixedly provided with a second limit screw which is in threaded connection and matched with the corresponding mounting lug, a rectangular trigger plate is sleeved on each guide rod, the length direction of the trigger plate is arranged along the distance direction between the ejector rod and the guide rod, the middle position of the trigger plate is sleeved on the guide rod, the two trigger plates form sliding guide matching along the axial direction parallel to the guide rod, one end of the trigger plate is, a pressing spring is movably sleeved outside the guide rod, one end of the pressing spring is abutted against the second limit screw, the other end of the pressing spring is abutted against the trigger plate, the elastic force of the pressing spring is always directed to the trigger plate by the second limit screw, and the trigger plate is used for pushing the center to be inserted into the limit notch;
the pushing mechanism further comprises a cylinder body which is fixedly connected with the mounting lug and is axially parallel to the axial direction of the guide rod, one end of the cylinder body, which is far away from the trigger plate, is an open end, one end, which is close to the trigger plate, is a closed end, a cylinder cover which is in sealing connection and matching with the opening of the cylinder body is arranged at the opening of the cylinder body, a piston rod which is in sealing sliding guide matching with the cylinder body is arranged in the cylinder body, the piston rod comprises a piston and a push rod, one end of the push rod is coaxially and fixedly connected with the piston, the other end of the push rod extends outwards from the closed end of the cylinder body, the end of the push rod is aligned with the trigger plate along the axial direction of the cylinder body, the push rod and the closed end of the cylinder body form sealing sliding guide matching along the axial;
the push rod is arranged in a hollow mode, a first exhaust hole communicated with the inner cavity of the push rod is formed in the outer circular surface of the push rod, the first exhaust hole is close to the piston, an exhaust groove penetrating through the push rod along the radial direction is formed in one end, away from the piston, of the push rod, the exhaust groove is communicated with the inner cavity of the push rod, a reset spring is movably sleeved outside the push rod, one end of the reset spring is abutted against the piston, the other end of the reset spring is abutted against the closed end of the cylinder body, the elastic force of the reset spring is always directed to the piston from the closed end of the cylinder body, a butt joint communicated with the cylinder body is arranged on the cylinder cover, a second exhaust hole communicated with the interior of the butt joint is formed in the butt joint;
the booster mechanism comprises a pressure loss detection valve body arranged at the opening of the cylindrical cavity and a high-pressure gas tank connected and communicated with the input end of the pressure loss detection valve body, a common valve for controlling the on-off of the high-pressure gas tank and the pressure loss detection valve body is arranged between the high-pressure gas tank and the input end of the pressure loss detection valve body, the common valve is in an open state under the initial state of the common valve, the output end of the pressure loss detection valve body is connected and communicated with a butt joint through a conduit, and the pressure loss detection valve body is in a closed state under the initial state and can be automatically switched to the open state under the pressure loss state of tap water in a conveying pipeline;
the pressure loss detection valve body comprises a second valve body fixedly arranged at the opening of a cylindrical cavity, the second valve body comprises a second valve cavity which is coaxially arranged in the cylindrical cavity and has an upward opening, the input end of the second valve body is communicated with the second valve cavity, the communicated part forms a second inlet, the output end of the second valve body is communicated with the second valve cavity, the communicated part forms a second outlet, the second inlet and the second outlet are symmetrically arranged along the axial direction of the second valve cavity, a second cylindrical valve core which forms a sealed sliding guide fit with the second valve core along the axial direction is arranged in the second valve cavity, a second butt joint hole which penetrates along the radial direction is formed in the second valve core, the second butt joint hole is used for connecting the second inlet and the second outlet, a floating rod is coaxially and fixedly arranged at the lower end of the second valve core, the floating rod movably penetrates through the bottom of the second valve body and extends into the cylindrical cavity, and a circular, the floating plug and the cylindrical cavity form sealed sliding guide fit along the axial direction of the cylindrical cavity, the floating plug floats to the opening of the cylindrical cavity under the action of tap water pressure, the two butting holes are positioned above the second inlet in an initial state, the distance between the two butting holes is equal to the distance between the floating plug and the bottom of the cylindrical cavity, a cap-shaped valve cover II matched with the opening of the second valve cavity is arranged at the opening of the second valve cavity, a pressing spring is movably arranged in the valve cover II, one end of the pressing spring is abutted against the valve cover II, the other end of the pressing spring is abutted against the valve core II, and the elastic force of the pressing spring is always directed to the valve core II from;
the top end of the second valve core is coaxially and fixedly provided with a fixing ring, the opening of the second valve cavity is provided with a guide groove which extends downwards in parallel to the axial direction of the second valve core, the outer circular surface of the fixing ring is provided with a guide block matched with the guide groove, and the guide block is matched with the guide groove and forms sliding guide fit along the axial direction parallel to the second valve cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895986.6A CN110617354B (en) | 2019-09-22 | 2019-09-22 | Automatic open circuit equipment for tap water pipeline leakage and pressure loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895986.6A CN110617354B (en) | 2019-09-22 | 2019-09-22 | Automatic open circuit equipment for tap water pipeline leakage and pressure loss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110617354A CN110617354A (en) | 2019-12-27 |
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| CN116081334B (en) * | 2023-02-23 | 2023-08-22 | 武汉宇格电力设备有限公司 | Automatic shutdown system for loose filling machine during gas loss |
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| US8720481B2 (en) * | 2011-10-13 | 2014-05-13 | Kevin Duane Guy | Fluid leak detection and shutdown apparatus |
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| FR2292810A2 (en) * | 1974-11-29 | 1976-06-25 | Vandenesch Andre | Branch pipe installation for buried water pipe - has automatic shut-off valve activated by pressure drop due to leaks |
| US4011848A (en) * | 1975-08-15 | 1977-03-15 | Chrysler Corporation | Fuel filter and roll-over valve |
| CN101545552A (en) * | 2008-03-26 | 2009-09-30 | 许承革 | Natural gas pipeline automatic antileak protective system |
| CN108006291A (en) * | 2017-11-29 | 2018-05-08 | 王和能 | The high security carrying method of the flammable explosive gas such as natural gas |
| CN208237497U (en) * | 2018-05-25 | 2018-12-14 | 南安市方建机械科技有限公司 | One kind being used for high yield natural gas well gas pipeline safety guard |
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