CN110748662A - Automatic detection closing device for heating leakage - Google Patents
Automatic detection closing device for heating leakage Download PDFInfo
- Publication number
- CN110748662A CN110748662A CN201911052412.9A CN201911052412A CN110748662A CN 110748662 A CN110748662 A CN 110748662A CN 201911052412 A CN201911052412 A CN 201911052412A CN 110748662 A CN110748662 A CN 110748662A
- Authority
- CN
- China
- Prior art keywords
- valve body
- steel ball
- heating
- piston
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Acoustics & Sound (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to an automatic detection closing device for the leakage of a heating, which comprises a switch valve arranged on a water inlet pipeline of the heating and a one-way valve arranged on a water outlet pipeline of the heating, wherein the one-way valve is conducted towards the water outlet direction, a rotatable switch sheet is arranged at one end, close to the heating, in a switch, the side wall of the switch sheet is matched with the inner wall of a valve body, one end of the switch sheet is in sealing fit with a water inlet pipe of the heating at one side of the heating, the other end of the switch sheet is connected with a rotating mechanism for providing the rotating power of the switch sheet, a water through hole is arranged on the switch sheet, when the switch sheet rotates to the opening position, the water through hole is aligned with the water inlet pipe. According to the invention, through the matching of the switch plate capable of periodically rotating and the pressure balance comparison device, one side of the heater is periodically sealed for pressure detection, and when water leakage occurs in the heater, the switch plate is locked at the closing position, so that the phenomenon of larger loss caused by continuous water leakage is avoided.
Description
Technical Field
The invention relates to a pipeline leakage safety device, in particular to a heating leakage automatic detection closing device.
Background
In winter, the areas north of the Yangtze river in China need heating due to severe cold climate, and most of the areas are heated by water, namely, the areas are heated by hot water in a heating pipeline. The hot-water heating has great hidden danger, receives the influence of factors such as heating pipeline material, the tightness of joint, service life, leads to the phenomenon that the pipeline bursts to appear during the heating. On average, more than 20% of users in each year have the heating burst, and the heating water in the heating pipeline soaks residences of residents, so that huge property loss is caused, and the lives of the residents are seriously influenced. At present, no safety prevention measures are provided for the problems of leakage of a heating pipeline and burst of a heating sheet in a heating system in the society, once the problems occur, a large amount of heating water is lost, the loss is heavy, a resident is flooded with water, and the contradiction between economic loss and neighbors is caused by the fact that downstairs neighbors are affected. Meanwhile, disputes and contradictions of economic loss compensation between users and heating providers are caused, and social stability and settlement are influenced. Countless events occur in heating systems every year nationwide. According to survey and estimation, the economic loss caused by the loss of the heating water flow in China is as high as 20 billion RMB every year, and the waste of fresh water resources is 6 billion tons. The research on a reliable heating installation detection protection device is a technical problem which needs to be solved by the society at present, the heating installation water leakage protection devices which are researched at present all adopt electronic equipment to carry out detection and water leakage prevention protection, firstly need to be electrified when in use, are easy to cause danger when being used on the heating installation mainly based on water circulation, secondly, when accidental power failure occurs, the device cannot work, and if the water leakage condition occurs at the moment, the loss cannot be avoided.
Disclosure of Invention
Based on the technical background, the invention provides an automatic detection closing device for the leakage of a heating installation, and provides a full-mechanical automatic detection closing structure.A rotary mechanism drives a rotatable switch sheet to carry out circulating switch detection pressure on the heating installation; the utility model has the advantages of also providing a use electronic equipment scheme simultaneously, carry out timing cycle detection to heating installation one side pressure through the same principle, when unexpected power failure appears, through the elasticity adjustment switch piece of spiral spring to the closed position, avoid because of the risk that the unable operation of power failure equipment brought.
The invention is realized by the following technical scheme:
the utility model provides a heating installation leaks automated inspection closing device, includes that install the ooff valve of (1) on the heating installation inlet channel and install check valve (10) on heating installation outlet conduit (11), check valve (10) switch on towards the water outlet direction, the ooff valve includes valve body (9), be close to heating installation one end in valve body (9) and be equipped with rotatable switch plate (3), switch plate (3) lateral wall cooperatees with valve body (9) inner wall, and the sealed cooperation of heating installation inlet tube (1) of switch plate (3) one end and heating installation one side, the other end of switch plate (3) is connected with the rotary mechanism that provides switch plate (3) rotary power, is equipped with limbers (22) on switch plate (3), and when switch plate (3) are rotatory to the open position, limbers (22) align with heating installation inlet tube (1), and when switch plate (3) are rotatory to the closed position, the limber hole (22) is completely misaligned with the heating water inlet pipe (1), and the switch piece (3) blocks the heating water inlet pipe (1);
the pressure balance comparison device is arranged on the outer side of the valve body (9), corresponds to the position of the switch plate (3) and is used for detecting the pressure of a heating water inlet pipe (1) on one side of a heating device, the pressure detection device is connected with a locking pin (12), the locking pin (12) penetrates through the valve body (9) to be matched with the side wall of the switch plate (3), a locking groove (15) matched with the locking pin (12) is formed in the side wall of the switch plate (3), and when the switch plate (3) rotates to the closing position, the locking pin (12) is aligned with the locking groove (15);
in a better scheme, the rotating mechanism comprises a pressing piston (8), a rotating rod (7), a volute spring (6), a fixing frame (35) and a speed regulation steel ball (17), the pressing piston (8) is arranged at one end of the rotating rod (7) and is coaxial with the rotating rod (7), the other end of the rotating rod (7) penetrates through the fixing frame (35) fixedly arranged in a valve body (9) to be fixedly connected with the inner end of the volute spring (6), a speed regulation steel ball groove (16) is spirally arranged on the outer side of the spiral rod (7), a speed regulation steel ball mounting groove (18) is arranged at the inner diameter of the fixing frame (35), the speed regulation steel ball (17) is arranged in the speed regulation steel ball mounting groove (18), and the speed regulation steel ball (17) extends out of the fixing frame (35) and can roll in the;
a speed regulating screw (20) is further arranged in the speed regulating steel ball mounting groove (18), the speed regulating screw (20) penetrates through the side wall of the valve body (9) and is in threaded connection with the inside of the speed regulating steel ball mounting groove (18), and a speed regulating spring (19) is arranged between the speed regulating screw (20) and the speed regulating steel ball (17);
wherein, pressure balance contrast device includes cylinder body (4), pressure balance pipe (2), piston (14), stop screw (5) and compression spring (13), piston (14) are located cylinder body (4) middle part and are kept apart cylinder body (4) upper portion and lower part for not UNICOM each other, cylinder body (4) lower part is through pressure balance pipe (2) and be close to heating installation inlet tube (1) intercommunication of heating installation one side, cylinder body (4) upper portion is equipped with compression spring (13), compression spring (13) one end and piston (14) contact, the other end and cylinder body (4) roof contact, compression spring (13) can promote piston (14) to valve body (9) direction, stop screw (5) pass cylinder body (4) roof stretch into in cylinder body (4) and with cylinder body (4) roof threaded connection, stop screw (5) bottom and piston (14) contact cooperation, the lower end of the piston (14) is connected with the locking pin (12);
the switch piece (3) is provided with a force adjusting steel ball limiting groove (24), the inner wall of the valve body (9) is provided with a force adjusting steel ball mounting groove (26) corresponding to the force adjusting steel ball limiting groove (24), a force adjusting steel ball (25) is arranged in the force adjusting steel ball mounting groove (26), a force adjusting spring (23) is further arranged in the force adjusting steel ball limiting groove (24), one end of the force adjusting spring (23) is pressed against the force adjusting steel ball (25), and when the switch piece (3) is in an opening position, the force adjusting steel ball limiting groove (24) is aligned with the force adjusting steel ball mounting groove (26);
the force adjusting steel ball mounting groove (26) penetrates through the valve body (9) and is communicated with the outer side of the valve body (9), and a force adjusting screw (27) penetrates through the valve body (9) and is screwed in the force adjusting steel ball limiting groove (26) and matched with the force adjusting spring (23);
in another better scheme, the rotating mechanism comprises a reciprocating motor (34) and a control module (33), the reciprocating motor (34) is arranged at the axis of the switch plate (3), the reciprocating motor (34) can drive the switch plate (3) to reciprocate between an opening position and a closing position, the control module (33) is arranged in the pressure balance comparison device, and the reciprocating motor (34) is connected with the control module (33) through a circuit;
the pressure balance comparison device comprises a cylinder body (4), a piston (14), an electric expansion bracket (32) and a pressure sensor (30), wherein the piston (14) is arranged inside the cylinder body (4), one end of the piston (14) is connected with the locking pin (12), the other end of the piston is connected with the electric expansion bracket (32), the electric expansion bracket (32) can drive the piston (14) to move towards the valve body (9), the electric expansion bracket (32) is connected with the control module (33) through a circuit, and the pressure sensor (30) is arranged on a heating water inlet pipe (1) close to one side of heating and communicated with the heating water inlet pipe (1) and used for detecting the pressure in the heating water inlet pipe (1);
the power supply device is characterized by further comprising a power supply module (31), wherein the power supply module (31) is respectively connected with the control module (33), the electric telescopic frame (32) and the reciprocating motor (34) and used for supplying power;
the valve body is further provided with a sedimentation tank (10), and the sedimentation tank (10) is detachably connected to the bottom of the valve body (9) in a sealing mode and is communicated with the inside of the valve body (9).
The invention has the beneficial effects that: (1) through the matching of the switch plate capable of periodically rotating and the pressure balance comparison device, one side of the heater is periodically sealed for pressure detection, when the heater leaks, the switch plate is locked at a closed position, the heater is isolated from a water inlet pipeline, and the phenomenon that continuous water leakage causes greater loss is avoided; (2) the detection period is adjustable, and the closed detection period can be adjusted according to different user requirements; (3) the full mechanical structure increases the reliability and avoids the electric leakage danger.
Drawings
FIG. 1 is a structural diagram of embodiment 1 of the present application.
Fig. 2 is a partial structure view of a switching valve in embodiment 1 of the present application.
Fig. 3 is a partially enlarged view of the force adjusting steel ball.
Fig. 4 is a structural view of embodiment 2 of the present application.
Fig. 5 is a structural diagram of embodiment 3 of the present application.
Fig. 6 is a structural view of embodiment 4 of the present application.
In the figure, 1, a heating water inlet pipe, 2, a pressure balance pipe, 3, a switch plate, 4, a cylinder body, 5, a limit screw, 6, a volute spring, 7, a rotating rod, 8, a pressing piston, 9, a valve body, 10, a one-way valve, 11, a heating water outlet pipe, 12, a locking pin, 13, a pressure spring, 14, a piston, 15, a locking groove, 16, a speed regulation steel ball groove, 17, a speed regulation steel ball, 18, a speed regulation steel ball mounting groove, 19, a speed regulation spring, 20, a speed regulation screw, 21, a sedimentation tank, 22, a water through hole, 23, a force regulation spring, 24, a force regulation steel ball limiting groove, 25, a force regulation steel ball, 26, a force regulation steel ball mounting groove, 27, a force regulation screw, 28, a diversion disc, 29, a diversion hole, 30, a pressure sensor, 31, a power supply module, 32, an electric expansion bracket, 33, a control module, 34, a reciprocating motor, 35.
Detailed Description
The present invention is further illustrated by the following examples.
Example 1
As shown in fig. 1 to 3, an automatic closing device for detecting a heater leakage comprises a switch valve installed on a heater water inlet pipe 1 and a check valve 10 installed on a heater water outlet pipe 11, wherein the switch valve is generally arranged in parallel with the heater water inlet pipe 1 and is not on the same axis with the heater water inlet pipe 1, and the check valve 10 is conducted towards a water outlet direction; the check valve usually includes a check plug and a spring, when water flows, the water impacts the check plug to overcome the spring force, the check valve is opened, and when the water flow stops, the spring force pushes the check plug to block the heating water outlet pipe.
The ooff valve includes valve body 9, and valve body 9 generally is cylindric casing, and the import has been seted up to one end, and the export has been seted up to the other end, and the import is located the altitude of the non-center pin of same cylinder with the export, and the import of valve body 9 and the switch-on of keeping away from heating installation one end of heating installation inlet tube 1, export and the switch-on of being close to heating installation one end of heating installation inlet tube 11 guarantee that the axis of valve body 9 is located the outside of heating. The switch piece 3 that can follow the rotatory switch of 9 axes of valve body is equipped with to export one end in the valve body 9, and switch piece 3 is generally for the cylindric of the 9 internal diameters of cooperation valve body, and the inboard exit end of valve body 9 is hugged closely to 3 one end of switch piece, guarantees that switch piece 3 can block up the export of valve body 9, cuts rivers. The valve body 9 is provided with a rotating shaft 36 at the axis, one end of the rotating shaft is fixed on the valve body 9, the other end of the rotating shaft is rotatably connected with the switch piece 3, and the switch piece 3 rotates around the rotating shaft 36. The switch piece 3 is provided with a water through hole 22, the size of the water through hole 22 is generally selected to be the same as or different from the inner diameter of the heating water inlet pipe 1, but the water through hole 22 cannot penetrate through the axis of the valve body 9, when the switch piece 3 rotates to the position that the water through hole 22 coincides with the outlet of the valve body 9, the switch piece 3 is regarded as the opening position, and at the moment, water flow is communicated; when the switch piece 3 is rotated to a position where the water passage hole 22 and the outlet of the valve body 9 are not overlapped completely, the switch piece 3 is regarded as the closed position of the switch piece 3, and at this time, the switch piece 3 can block the outlet of the valve body, and the water flow is blocked and cannot pass through. Normally, a stopper is provided at the closed position of the shutter 3 to prevent the shutter 3 from being excessively rotated.
The setting of rotary rod 7 is in the inside axis position of valve body 9, and is spacing at the axis position through the through-hole in the middle of mount 35, prevents to rock, and mount 35 fixed mounting is in the inside middle part position of valve body 9, and the through-hole that supplies rotary rod 7 to pass through is seted up to the centre for fixed spacing to rotary rod 7, generally can select to set up logical water passageway on mount 35, so that the passing through of rivers. A spiral speed regulating steel ball groove 16 is formed on the surrounding rotating rod 7, a speed regulating steel ball mounting groove 18 is correspondingly formed on the fixing frame 35, a speed regulating steel ball 17 for limiting rolling is mounted at the inner end of the speed regulating steel ball mounting groove 18, and the speed regulating steel ball 17 can roll along the speed regulating steel ball groove 17; the other end of the speed regulation steel ball mounting groove 17 penetrates through the fixing frame 35 and the valve body 9 to the outer side of the valve body, threads are arranged in the speed regulation steel ball mounting groove 18, a speed regulation screw 20 is screwed into the speed regulation steel ball mounting groove 18 from the outer side of the valve body through the threads, a speed regulation spring 19 is arranged between the speed regulation screw 20 and the speed regulation steel ball 17, one end of the speed regulation spring 19 is in contact with the speed regulation screw 20, and the other end of the speed regulation spring presses the speed regulation steel ball 17 into the speed regulation steel ball groove 16, so. By rotating the adjusting screw 20, the compression length of the speed regulating spring 19 can be adjusted, so that the pressure of the speed regulating spring 19 on the speed regulating steel ball 16, namely the friction force of the speed regulating steel ball 17 on the speed regulating steel ball groove 16, is adjusted. A pressing piston 8 is arranged at one end of the rotating rod 7 close to the inlet of the valve body 9, the inner diameter of the pressing piston 8 is usually smaller than that of the valve body 9 so as to facilitate water flow, and a spring can be arranged between the pressing piston 8 and the rotating rod 7 to serve as buffering; one end of the rotating rod 7 close to the outlet of the valve body 9 is connected with the inner end of the vortex spring 6, the outer end of the vortex spring 6 is fixedly connected with the switch sheet 3, and when the vortex spring 6 is tightly pressed, the elastic force of the vortex spring 6 drives the switch sheet 3 to rotate. The diameter of the hold-down piston 8 is generally smaller than the inner diameter of the valve body 9 so as not to impede the flow of water therethrough, while the inner diameter of the inner wall between the hold-down piston 8 and the inlet of the valve body 9 can generally match the diameter of the hold-down piston 8 to enhance the impact of the water flow on the hold-down piston 8, resulting in better operation of the device.
The side wall of the switch piece 3 is usually provided with a force-adjusting steel ball limiting groove 24 for limiting, the inner wall of the valve body 9 is provided with a force-adjusting steel ball mounting groove 26 at a position corresponding to the force-adjusting steel ball limiting groove 24, and when the switch piece 3 rotates to an opening position, the force-adjusting steel ball mounting groove 26 is aligned with the force-adjusting steel ball limiting groove 24. The force adjusting steel ball 25 is arranged in the force adjusting steel ball mounting groove 26, the force adjusting screw 20 penetrates through the valve body 9 and is screwed into the force adjusting steel ball mounting groove 26 through threads, one end of the force adjusting spring 23 is in contact with the force adjusting screw 20, the other end of the force adjusting spring is in contact with the force adjusting steel ball 25, and the compression length of the force adjusting spring 23 can be adjusted by rotating the force adjusting screw 20 from the outer side of the valve body 9. Usually, in order to conveniently install the force adjusting screw 20, the position on the outer side of the valve body 9 corresponding to the force adjusting steel ball installation groove 26 can be thickened.
A cylinder body 4 for pressure difference comparison is fixedly arranged at one end of the outer side of the valve body 9 close to the outlet, the installation position of the cylinder body 4 corresponds to the switch plate 3, the middle part in the cylinder body 4 is provided with a piston 14 which divides the cylinder body 4 into an upper part and a lower part which are not communicated with each other, the lower part of the cylinder body 4 is communicated with a heating water inlet pipe 1 close to the heating side through a pressure balance pipe 2, the upper part of the cylinder body 4 is communicated with the atmosphere through a through hole, the top wall of the cylinder body 4 is provided with an opening hole with threads, a limit screw 5 passes through the opening hole and is screwed into the upper part of the cylinder body 4, the bottom of the limit screw 5 is contacted with the piston 14, a pressure spring 13 is arranged between the piston 14 and the top wall of the cylinder body 4, when the piston 14 is positioned in the middle part of the cylinder body 4, the elastic force provided, when the switch plate 3 is located at the opening position, when the heater normally operates, the pressure at the lower part of the cylinder 4 is the same as the pressure of the heater water inlet pipe 1, namely, the pressure at the lower part of the cylinder 4 is greater than the elastic force provided by the pressure spring 13, and the piston 14 is pressed to the bottom of the limit screw 5, namely, is located in the middle of the cylinder 4. The compression distance of the pressure spring 13 can be adjusted by rotating the limit screw 5, namely, the elastic force provided by the pressure spring 13 is adjusted, so that different heating pipeline pressures can be met. One end of the piston 3 is connected with a locking pin 12, the locking pin 15 extends out of the cylinder 4 and penetrates through the outer wall of the valve body 9 to penetrate into the valve body 9, and can be tightly attached to the switch piece 3, when the piston 14 is located at the balance position in the middle of the cylinder 4, one end of the locking pin 12 is located at the position tangent to the inner wall of the valve body 9, and the rotation of the switch piece 3 is not affected. The side wall of the switch piece 3 corresponding to the locking pin 15 is provided with a locking groove 15 matched with the locking pin 12 in size, and the locking groove 15 is aligned with the locking pin 12 only when the switch piece 3 rotates to the closed position.
The bottom of valve body 9 still is equipped with sedimentation tank 21 usually, and sedimentation tank 21 is generally installed in the lowest department of valve body 9 bottom level to can dismantle, generally select threaded connection, the junction carries out sealed processing, and sedimentation tank 21 can collect the precipitate of part running water, can regularly pull down sedimentation tank 21 and clear up, avoids the precipitate of running water to block up the valve body, has prolonged life.
The working principle of the device is as follows: firstly, the inlet of the valve body 9 is normally connected with the water inlet direction of the heating water inlet pipe 1, the outlet of the valve body is connected with the water outlet direction of the heating water inlet pipe 1, and the one-way valve 10 is connected to the heating water outlet pipe 11 in the one-way conduction direction towards the water outlet direction of the heating water outlet pipe 11. At the initial position, the switch plate 3 is at the open position, the water through hole 22 is aligned with the outlet of the valve body 9, the hot water in the heating pipeline enters the valve body 9 from the inlet of the valve body 9, passes through the fixing frame 35 and the water through hole 22, flows out from the outlet of the valve body 9, flows out from the heating water outlet pipe 11 after heating, the heating normally works, at the moment, the pressure inside the valve body 9 is the same as the pressure on one side of the heating, the upper pressure and the lower pressure in the cylinder body 4 of the pressure balance comparison device are balanced, and the piston 14 is stabilized at the middle position. Meanwhile, because of the water impact at the inlet of the valve body 9, the pressing piston 8 generates thrust towards the outlet of the valve body, the rotating rod 7 is driven to start moving, because the speed regulation steel ball groove 16 on the side wall of the rotating rod 7 is matched with the speed regulation steel ball 17 arranged on the fixed frame 35, the speed regulation steel ball 17 can only move along the speed regulation steel ball groove 16, the screw rod 7 moves towards the outlet of the valve body 9 while spirally rotating under the restriction of the speed regulation steel ball groove 16, the rotating rod 7 rotates and presses the volute spring 6 at the same time of rotating movement, the volute spring 6 stores energy and applies elasticity to the switch piece 3, at the moment, because the switch piece 3 is in an opening position, the force regulation steel ball limit groove 24 on the switch piece 3 is aligned with the force regulation steel ball mounting groove 26 on the inner wall of the valve body, and the force regulation steel ball 25 is pressed into the force regulation steel ball limit groove 24 to prevent the. Along with the compaction of the volute spring 6, the force applied by the volute spring 6 to the switch plate 3 is gradually increased, when the force is increased enough to overcome the pressing force of the force adjusting spring 23 to the force adjusting steel balls 25, the switch plate presses the 4 force adjusting steel balls 25 back into the force adjusting steel ball mounting groove 24, the rotation resistance of the switch plate 3 disappears, the switch plate 3 is driven to rotate by the force of the volute spring 6, when the switch plate 3 rotates to the closing position, the switch plate 3 does not rotate any more due to the blocking of the stop block, the switch plate 3 is stabilized at the closing position, the water through hole 22 is staggered with the outlet of the valve body 9, water flow is cut off and does not flow any more, and meanwhile, due to the backflow prevention effect of the one-way valve 10, one side of the.
At the moment, the pressure balance comparison device compares the pressure at the heating side, when no water leakage exists at the heating side, because no water flow flows, the pressure at the heating side is the same as the internal pressure of the heating water return pipe 11, namely the pressure at the lower part of the cylinder body 4 is the same as the pressure of the heating water return pipe 11, because the pressure provided by the pressure spring to the piston 14 is set to be the same as the pressure in the heating water return pipe 11, namely the upper part and the lower part of the piston 14 are stressed the same, at the moment, the position of the piston 14 is stabilized at the middle part of the cylinder body 4 and does not move, at the moment, the locking pin 12 is stabilized; because the water flow in the valve body 9 stops, the water flow does not generate impact force on the pressing piston 8 any more, at the moment, the volute spring 6 starts to return to release energy storage, the rotary rod 7 is pushed back to the original position, meanwhile, the switch piece 3 rotates reversely, when the switch piece 3 rotates to the opening position, the force adjusting steel ball 25 is pressed into the force adjusting steel ball limiting groove 24 again, the switch piece 3 is stabilized at the opening position, the water through hole 22 is communicated with the outlet of the valve body 9, the water flow is conducted again, the heating installation is recovered to normal operation, at the moment, one circulation detection is finished, and the isolation detection is carried out according to the circulation.
When the isolation detection, if the water leakage condition appears on one side of the heater, at the moment, the water leakage occurs on one side of the heater, the pressure drops, namely, the pressure of the lower part of the cylinder body 4 drops to be smaller than the pressure of the lower part of the heater return pipe 11, so that the elastic force provided by the pressure spring 13 is larger than the pressure of the lower part of the cylinder body 4, the pressure spring 13 pushes the piston 14 towards the lower part of the cylinder body, at the moment, the switch plate 3 is in the closed position, the locking groove 15 of the side wall of the switch plate 3 is aligned with the locking pin 12, the locking pin 12 is driven to be inserted into the locking groove 15 through the movement of the piston 14, the rotation of the switch plate 3 is blocked, the switch plate 3 cannot return, one side of the heater is kept in the. After finishing the heating maintenance, normally again with valve body 9 return or normally install once more and can carry out work once more, after both sides pressure balance, return spring 14 returns piston 14, and the initial position is replied to the device, normal work once more.
By rotating the speed regulation screw 20, the pressure applied to the speed regulation steel ball 19 can be regulated, namely, the friction force between the speed regulation steel ball 19 and the speed regulation steel ball groove 16 is increased, the advancing speed of the rotating rod 7 is slowed down, and the frequency of isolation detection is controlled; meanwhile, the force adjusting screw 27 is adjusted to adjust the pressure applied to the force adjusting steel ball 25, and the force required by the switch piece 3 to overcome the elastic force to rotate is increased, so that the frequency of isolation detection is controlled. The speed adjusting screw 20 and the force adjusting screw 27 are matched with each other, so that the frequency can be controlled more finely. The compression distance of the pressure spring 13 can be adjusted by rotating the limit screw 5, namely the elastic force provided by the pressure spring 13 is adjusted, so that the device can normally run according to different heating pipeline pressures.
Example 2
The present embodiment is the same as embodiment 1 except for the following differences.
As shown in fig. 4, in the present embodiment, the inlet and the outlet of the valve body 9 are both located at the axial center of the valve body, and after the valve body 9 is installed, the valve body 9 is coaxial with the heating water inlet pipe 1. A diversion disc 28 is fixedly arranged at one end of an inner outlet of the valve body 9, the diversion disc 28 is tightly attached to the outlet end of the valve body 9, a diversion hole 29 is formed in the diversion disc 28, the diversion hole 29 is communicated with the outlet of the valve body 9, the axis of the valve body 9 does not penetrate through the diversion hole 29, and the diameter of the diversion hole 29 is larger than that of the water through hole 22 under the general condition. One end of the rotating shaft 36 is fixedly arranged at the axle center of the diversion disc 28, and the other end is rotatably connected with the switch piece 3, so that the switch piece 3 can rotate around the rotating shaft 36, the switch piece 3 is hermetically arranged at the position close to the diversion disc 28, when the switch piece 3 rotates to the opening position, the water through hole 22 is superposed with the diversion hole 29, and water flow can pass through; when the switch piece 3 rotates to the closed position, the limber hole 22 is staggered with the diversion hole 29, the switch piece 3 blocks the diversion hole, and the water flow is cut off.
This embodiment can realize that valve body 9 and heating installation inlet tube 1 coaxial line are installed, have certain promotion in stability and pleasing to the eye.
Example 3
The present embodiment is the same as embodiment 1 except for the following differences.
As shown in fig. 5, an automatic closing device for detecting a heater leakage includes a switch valve installed on a heater water inlet pipe 1 and a check valve 10 installed on a heater water outlet pipe 11, the switch valve is generally arranged parallel to the heater water inlet pipe 1 and is not on the same axis with the heater water inlet pipe 1, and the check valve 10 is conducted towards a water outlet direction.
The ooff valve includes valve body 9, and valve body 9 generally is cylindric casing, and the import has been seted up to one end, and the export has been seted up to the other end, and the import is located the altitude of the non-center pin of same cylinder with the export, and the import of valve body 9 and the switch-on of keeping away from heating installation one end of heating installation inlet tube 2, export and the switch-on of being close to heating installation one end of heating installation inlet tube 2 guarantee that the axis of valve body 9 is located the outside of heating. The switch piece 3 that can follow the rotatory switch of 9 axes of valve body is equipped with to export one end in the valve body 9, and switch piece 3 is generally for the cylindric of the 9 internal diameters of cooperation valve body, and the inboard exit end of valve body 9 is hugged closely to 3 one end of switch piece, guarantees that switch piece 3 can block up the export of valve body 9, cuts rivers. The valve body 9 is provided with a rotating shaft 36 at the axis, one end of the rotating shaft is rotatably arranged on the valve body 9, the other end of the rotating shaft is connected with the switch piece 3, and the switch piece 3 rotates around the rotating shaft 36. The switch piece 3 is provided with a water through hole 22, the size of the water through hole 22 is generally selected to be the same as or different from the inner diameter of the heating water outlet pipe 1, but the water through hole 22 cannot penetrate through the axis of the valve body 9, when the switch piece 3 rotates to the position that the water through hole 22 coincides with the outlet of the valve body 9, the switch piece 3 is regarded as the opening position, and at the moment, water flow is communicated; when the water passage hole 22 is rotated to be not overlapped with the outlet of the valve body 9 completely, the opening and closing piece 3 is regarded as the closing position of the opening and closing piece 3, and at this time, the opening and closing piece 3 can block the outlet of the valve body 9, and the water flow is blocked and can not pass through. The switch piece 3 is internally provided with a reciprocating motor 34, an output shaft of the reciprocating motor 34 is connected with a rotating shaft 36, and the switch piece 3 can be driven to rotate around the rotating shaft in a reciprocating manner at an opening position and a closing position through the operation of the reciprocating motor 34. The valve body 9 is also internally provided with a scroll spring 6, one end of the scroll spring 6 is connected with the switch sheet 3, the other end of the scroll spring is connected to the side wall of one side of the inlet in the valve body 9, when the switch sheet 3 is in an opening position, the scroll spring is in a pressing state, and when the switch sheet 3 is in a closing position, the scroll spring 6 is in a balance state.
A cylinder body 4 for pressure difference comparison is fixedly mounted at one end, close to the outlet, of the outer side of the valve body 9, the mounting position of the cylinder body 4 corresponds to the switch plate 3, a vent hole for communicating with the atmosphere is generally formed in the cylinder body 4, a piston 14 is arranged in the middle of the cylinder body 4, an electric expansion bracket 32 is mounted on the upper portion of the piston 14, and the electric expansion bracket 32 can drive the piston 14 to move in the cylinder body 4. The lower part of the piston 14 is connected with a locking pin 12, the locking pin 12 extends out of the cylinder 4 and penetrates through the outer wall of the valve body 9 to penetrate into the valve body 9 and can be in contact with the switch sheet 3, and when the piston 14 is in a balance position in the middle of the cylinder 4, one end of the locking pin 12 is in a position tangent to the inner wall of the valve body 9, and the rotation of the switch sheet 3 is not influenced. The side wall of the switch piece 3 corresponding to the locking pin 12 is provided with a locking groove 15 matched with the locking pin 12 in size, and the locking groove 15 is aligned with the locking pin 12 only when the switch piece 3 rotates to the closed position. Be equipped with pressure sensor 30 on the heating installation inlet tube 1 of heating installation one side, can detect the pressure value of heating installation one side, still be equipped with control module 33 on cylinder body 4, control module 33 passes through the circuit to be connected with pressure sensor 30 for read pressure sensor 30's numerical value, simultaneously, control module 33 still is connected with electric expansion bracket 32 and reciprocating motor 34 respectively through the circuit, is used for control. The cylinder 4 is further provided with a power module 31, and the power module is respectively connected with the control module 33, the electric telescopic frame 32 and the reciprocating motor 34 for supplying power.
The bottom of valve body 9 still is equipped with sedimentation tank 21 usually, and sedimentation tank 21 is generally installed in the lowest department of valve body 9 bottom level to can dismantle, generally select threaded connection, the junction carries out sealed processing, and sedimentation tank 21 can collect the precipitate of part running water, can regularly pull down sedimentation tank 21 and clear up, avoids the precipitate of running water to block up the valve body, has prolonged life.
The working principle of the device is as follows: firstly, the inlet of the valve body 9 is normally connected with the water inlet direction of the heating water inlet pipe 1, the outlet of the valve body 9 is connected with the water outlet direction of the heating water inlet pipe 1, and the one-way valve 10 is connected to the heating water outlet pipe 11 in the one-way conduction direction towards the water outlet direction of the heating water outlet pipe 11. In the initial position, the switch plate 3 is in the open position, the water through hole 22 is aligned with the outlet of the valve body 9, hot water in the heating pipeline enters the valve body from the inlet of the valve body 9, flows out from the outlet after passing through the water through hole 22, and the heating works normally. The device is electrified, the reciprocating motor 34 starts to work, the reciprocating motor starts to rotate according to the frequency set by the control module 33, the switch piece 3 is driven to rotate from the opening position to the closing position and stay for a period of time, the outlet of the valve body 9 is blocked by the switch piece 3 at the moment, water flow is cut off and does not flow any more, and meanwhile, due to the backflow prevention effect of the check valve 10, one side of the heater is isolated.
When no leakage exists on one side of the heater, the numerical value of the pressure sensor 30 is kept unchanged, the reciprocating motor 34 normally operates, stops at the closed position for a preset time and then reversely rotates to drive the switch piece 3 to return to the open position and stop, the heater normally works, and one detection cycle is finished; when taking place to reveal when heating installation one side, pressure sensor 30's numerical value changes, control module 33 reads pressure sensor 30's numerical value change back, the electronic expansion bracket 32 operation of send instruction control, electronic expansion bracket 32 drives piston 14 motion, promote locking round pin 12 and move to the valve body internal motion, because switch block 3 is in the closed position, the locking groove 15 and the locking round pin 12 of switch block 3 lateral wall align this moment, locking round pin 12 inserts in locking groove 15, block the rotation of switch block 3, send instruction simultaneously and stop reciprocating motor 34 and move, make the unable return of switch block 3, heating installation one side keeps in the isolated state with the trunk line, continuous hourglass water of heating installation has been avoided, can reduce the loss by a wide margin. After the heating installation maintenance is finished, the valve body 9 is normally reset or normally installed again to work again. When power is cut off accidentally, the reciprocating motor 34 stops working, and because the spiral spring 6 is in a compression state when the switch plate 3 is in an open state, the spiral spring 6 releases elastic force to return after power of the reciprocating motor 34 is lost, the switch plate 3 is rotated to a closed state, water flow is blocked, and accidental loss possibly caused by the fact that detection cannot be carried out due to accidental power failure is prevented.
By setting the parameters of the control module 33, the rotation period and the dwell time of the switch plate 3 can be set, thereby controlling the detection period of the device.
Example 4
The present embodiment is the same as embodiment 3 except for the following differences.
In this embodiment, the inlet and the outlet of the valve body 9 are both located at the axial center of the valve body 9, and after the valve body 9 is installed, the valve body 9 and the heating water inlet pipe 1 are coaxial. A diversion disc 28 is arranged at one end of the inner outlet of the valve body 9, and the diversion disc 28 is tightly attached to the outlet end of the valve body 9. One end of the rotating shaft 36 is fixedly arranged at the axle center of the diversion disc 28, and the other end is rotatably connected with the switch piece 3, so that the switch piece 3 can rotate around the rotating shaft 36. The diversion disc 28 is provided with a diversion hole 29, the diversion hole 29 is communicated with the outlet part of the valve body 9, the axis of the valve body 9 does not pass through the diversion hole 29, and the diameter of the diversion hole 29 is larger than that of the water through hole 22 under the general condition. The switch piece 3 is hermetically arranged at a position close to the diversion disc 28, when the switch piece 3 rotates to an open position, the water through hole 22 is superposed with the diversion hole 29, and water flow can pass through; when the switch piece 3 rotates to the closed position, the limber hole 22 is staggered with the diversion hole 29, the switch piece 3 blocks the diversion hole 29, and the water flow is cut off.
The valve body and the heating water inlet pipe can be installed coaxially in the embodiment, and certain improvement can be achieved in stability and attractiveness.
Claims (10)
1. The utility model provides a heating installation leaks automated inspection closing device, includes the ooff valve of installing (1) on the heating installation inlet channel and installs check valve (10) on heating installation outlet conduit (11), check valve (10) switch on towards the water outlet direction, its characterized in that, the ooff valve includes valve body (9), be close to heating installation one end in valve body (9) and be equipped with rotatable switch plate (3), switch plate (3) lateral wall cooperatees with valve body (9) inner wall, and switch plate (3) one end and heating installation inlet tube (1) seal fit of heating installation one side, and the other end of switch plate (3) is connected with the rotary mechanism that provides switch plate (3) rotary power, is equipped with limbers (22) on switch plate (3), and when switch plate (3) are rotatory to the open position, limbers (22) align with heating installation inlet tube (1) and communicate, and when switch plate (3) are rotatory to the closed position, the limber hole (22) is completely misaligned with the heating water inlet pipe (1), and the switch piece (3) blocks the heating water inlet pipe (1);
still include pressure balance contrast device, pressure balance contrast device locates the valve body (9) outside and corresponding with switch plate (3) position for detect the pressure of the heating installation inlet tube (1) of heating installation one side, pressure detection device is connected with locking round pin (12), locking round pin (12) pass valve body (9) and cooperate with switch plate (3) lateral wall, be equipped with on switch plate (3) lateral wall with locking round pin (12) matched with locking groove (15), when switch plate (3) are rotatory when closing the position, locking round pin (12) align with locking groove (15).
2. The automatic closing device for detecting the heat leakage according to claim 1, wherein the rotating mechanism comprises a pressing piston (8), a rotating rod (7), a volute spring (6), a fixing frame (35) and a speed regulation steel ball (17), the pressing piston (8) is arranged at one end of the rotating rod (7) and is coaxial with the rotating rod (7), the other end of the rotating rod (7) penetrates through the fixing frame (35) fixedly arranged inside the valve body (9) and is fixedly connected with the inner end of the volute spring (6), a speed regulation steel ball groove (16) is spirally arranged on the outer side of the volute spring (7), a speed regulation steel ball mounting groove (18) is arranged at the inner diameter of the fixing frame (35), the speed regulation steel ball (17) is arranged in the speed regulation steel ball mounting groove (18), and the speed regulation steel ball (17) extends out of the fixing frame (35) and can roll in the speed.
3. The automatic detection and closing device for the heat leakage as claimed in claim 2, wherein a speed regulation screw (20) is further arranged in the speed regulation steel ball mounting groove (18), the speed regulation screw (20) penetrates through the side wall of the valve body (9) and is screwed in the speed regulation steel ball mounting groove (18), and a speed regulation spring (19) is arranged between the speed regulation screw (20) and the speed regulation steel ball (17).
4. An automatic detection and closing device for a heating leakage according to any one of claims 1 to 3, wherein the pressure balance comparison device comprises a cylinder body (4), a pressure balance pipe (2), a piston (14), a limit screw (5) and a pressure spring (13), the piston (14) is arranged in the middle of the cylinder body (4) and separates the cylinder body (4) into an upper part and a lower part which are not communicated with each other, the lower part of the cylinder body (4) is communicated with a heating water inlet pipe (1) close to the heating side through the pressure balance pipe (2), the upper part of the cylinder body (4) is provided with the pressure spring (13), one end of the pressure spring (13) is contacted with the piston (14), the other end is contacted with the top wall of the cylinder body (4), the pressure spring (13) can push the piston (14) towards the valve body (9), the limit screw (5) penetrates through the top wall of the cylinder body (4) and extends into the cylinder body (4) and is in threaded, the bottom end of the limit screw (5) is in contact fit with the piston (14), and the lower end of the piston (14) is connected with the locking pin (12).
5. An automatic closing device for detecting heat leakage according to any of claims 1-3, wherein the switch plate (3) is provided with a force adjusting steel ball limiting groove (24), the inner wall of the valve body (9) is provided with a force adjusting steel ball mounting groove (26) corresponding to the force adjusting steel ball limiting groove (24), the force adjusting steel ball mounting groove (26) is internally provided with a force adjusting steel ball (25), the force adjusting steel ball limiting groove (24) is internally provided with a force adjusting spring (23), one end of the force adjusting spring (23) is tightly pressed with the force adjusting steel ball (25), and when the switch plate (3) is in the open position, the force adjusting steel ball limiting groove (24) is aligned with the force adjusting steel ball mounting groove (26).
6. The automatic detection closing device for the heat leakage is characterized in that the force adjusting steel ball mounting groove (26) penetrates through the valve body (9) and is communicated with the outer side of the valve body (9), and the force adjusting screw (27) penetrates through the valve body (9) and is screwed in the force adjusting steel ball limiting groove (26) and is matched with the force adjusting spring (23).
7. The automatic detection and shutdown device for the heat leakage according to claim 1, wherein the rotation mechanism includes a reciprocating motor (34) and a control module (33), the reciprocating motor (34) is disposed at the axial center of the switch plate (3), the reciprocating motor (34) can drive the switch plate (3) to reciprocate between the open position and the closed position, the control module (33) is disposed in the pressure balance comparison device, and the reciprocating motor (34) is connected to the control module (33) through a circuit.
8. The automatic detection and shutdown device for the heat leakage according to claim 7, wherein the pressure balance comparison device comprises a cylinder (4), a piston (14), an electric expansion bracket (32) and a pressure sensor (30), the piston (14) is disposed inside the cylinder (4), one end of the piston (14) is connected to the locking pin (12), the other end of the piston is connected to the electric expansion bracket (32), the electric expansion bracket (32) can drive the piston (14) to move towards the valve body (9), the electric expansion bracket (32) is connected to the control module (33) through a circuit, and the pressure sensor (30) is disposed on the heat inlet pipe (1) near the heat side and is communicated with the heat inlet pipe (1) for detecting the pressure in the heat inlet pipe (1) on the heat side.
9. An automatic detection and shutdown device for warm air leakage according to claim 7 or 8, characterized by further comprising a power module (31), wherein the power module (31) is respectively connected with the control module (33), the electric telescopic frame (32) and the reciprocating motor (34) for supplying power.
10. A heating leakage automatic detection closing device according to any one of claims 1, 2 or 7, characterized in that the valve body is further provided with a sedimentation tank (10), and the sedimentation tank (10) is detachably and hermetically connected to the bottom of the valve body (9) and is communicated with the interior of the valve body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052412.9A CN110748662B (en) | 2019-10-31 | 2019-10-31 | Automatic detection closing device for heating leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052412.9A CN110748662B (en) | 2019-10-31 | 2019-10-31 | Automatic detection closing device for heating leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110748662A true CN110748662A (en) | 2020-02-04 |
| CN110748662B CN110748662B (en) | 2020-08-11 |
Family
ID=69281542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911052412.9A Active CN110748662B (en) | 2019-10-31 | 2019-10-31 | Automatic detection closing device for heating leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110748662B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565487A (en) * | 2021-07-09 | 2021-10-29 | 四川川庆石油钻采科技有限公司 | Testing method of particle drilling switch device |
| CN114151849A (en) * | 2021-11-18 | 2022-03-08 | 信众 | Automatic closing system for water leakage of heating system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2127446Y (en) * | 1992-06-16 | 1993-02-24 | 北京市建筑五金装饰材料科研所 | Rotary tap |
| CN201606965U (en) * | 2010-01-25 | 2010-10-13 | 刘满元 | Automatic closing device for heating installation water leakage |
| CN201680509U (en) * | 2010-05-20 | 2010-12-22 | 刘满元 | Heater water leakage automatic closing device |
| GB2521018A (en) * | 2013-12-05 | 2015-06-10 | Anthony Richard Howe | Device for detecting and preventing water leaks |
| CN105221778A (en) * | 2015-09-06 | 2016-01-06 | 苗沐霖 | Combustion gas quick closing valve |
| CN206093127U (en) * | 2016-08-29 | 2017-04-12 | 王荣 | Domestic heating installation leaks and closes water valve automatically |
| KR20170075452A (en) * | 2015-12-23 | 2017-07-03 | 블루앤 유한회사 | System for detecting a pipeline leaks |
| CN208793667U (en) * | 2018-06-22 | 2019-04-26 | 旦宇科技江苏有限公司 | A kind of gate valve |
| CN110131434A (en) * | 2019-05-15 | 2019-08-16 | 王拓 | A kind of valve body and its application method for fire hydrant |
| CN110332328A (en) * | 2019-07-04 | 2019-10-15 | 王朝阳 | Leakage auto-cutout guard method during natural gas transportation |
-
2019
- 2019-10-31 CN CN201911052412.9A patent/CN110748662B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2127446Y (en) * | 1992-06-16 | 1993-02-24 | 北京市建筑五金装饰材料科研所 | Rotary tap |
| CN201606965U (en) * | 2010-01-25 | 2010-10-13 | 刘满元 | Automatic closing device for heating installation water leakage |
| CN201680509U (en) * | 2010-05-20 | 2010-12-22 | 刘满元 | Heater water leakage automatic closing device |
| GB2521018A (en) * | 2013-12-05 | 2015-06-10 | Anthony Richard Howe | Device for detecting and preventing water leaks |
| CN105221778A (en) * | 2015-09-06 | 2016-01-06 | 苗沐霖 | Combustion gas quick closing valve |
| KR20170075452A (en) * | 2015-12-23 | 2017-07-03 | 블루앤 유한회사 | System for detecting a pipeline leaks |
| CN206093127U (en) * | 2016-08-29 | 2017-04-12 | 王荣 | Domestic heating installation leaks and closes water valve automatically |
| CN208793667U (en) * | 2018-06-22 | 2019-04-26 | 旦宇科技江苏有限公司 | A kind of gate valve |
| CN110131434A (en) * | 2019-05-15 | 2019-08-16 | 王拓 | A kind of valve body and its application method for fire hydrant |
| CN110332328A (en) * | 2019-07-04 | 2019-10-15 | 王朝阳 | Leakage auto-cutout guard method during natural gas transportation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565487A (en) * | 2021-07-09 | 2021-10-29 | 四川川庆石油钻采科技有限公司 | Testing method of particle drilling switch device |
| CN113565487B (en) * | 2021-07-09 | 2023-07-14 | 四川川庆石油钻采科技有限公司 | Testing method of particle drilling switch device |
| CN114151849A (en) * | 2021-11-18 | 2022-03-08 | 信众 | Automatic closing system for water leakage of heating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110748662B (en) | 2020-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4930551A (en) | Automatic hot water recovery apparatus | |
| CN110748662B (en) | Automatic detection closing device for heating leakage | |
| CN107806334B (en) | Full wireless integrated type electric antifreezing regulation stop composite valve interval intelligent gas production system | |
| US20210341955A1 (en) | Safety Device For Hydrodynamic Pressure Regulating Pipe Network | |
| CN109026845B (en) | Oil leakage detection and protection device for fan stationary blade adjusting hydraulic device | |
| CN216768394U (en) | Back pressure valve | |
| CN201391661Y (en) | Pressure regulating shutoff device | |
| CN212156019U (en) | Pure mechanical automatic temperature control device | |
| CN210661526U (en) | Household pipe burst protection integrated valve | |
| CN2295092Y (en) | Water-pressure linkage gas electromagnetic valve | |
| CN214468912U (en) | Water return device | |
| CN207598218U (en) | Intelligent gas production system is opened between a kind of full Wireless integrated form | |
| CN109373620A (en) | A kind of semi-automatic water-supply apparatus of solar water heater | |
| CN104848384A (en) | Temperature/pressure-change heating heat exchanger unit | |
| CN217029035U (en) | Steam turbine regulating valve | |
| CN216197999U (en) | Automatic anti-freezing wellhead heating device | |
| CN220396479U (en) | Automatic intelligent leak protection water valve of control | |
| CN219549749U (en) | Check valve, thermodynamic balance valve and water supply system | |
| CN220910568U (en) | Pressure controller for air conditioner pressure system | |
| CN216867592U (en) | Temperature control device with pressure balance function | |
| CN217302505U (en) | Water leakage induction protection device | |
| CN213957370U (en) | Swimming pool quality of water on-line measuring device | |
| CN111207234B (en) | Automatic opening and closing leakage-proof water valve for central heating | |
| CN219317723U (en) | Self-operated cooling temperature regulating valve | |
| CN217713821U (en) | Electric actuator for gas valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |