CN101749788B - Variable flow pressure control device - Google Patents
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- CN101749788B CN101749788B CN2008101890471A CN200810189047A CN101749788B CN 101749788 B CN101749788 B CN 101749788B CN 2008101890471 A CN2008101890471 A CN 2008101890471A CN 200810189047 A CN200810189047 A CN 200810189047A CN 101749788 B CN101749788 B CN 101749788B
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Abstract
The invention discloses a variable flow pressure control device which comprises a main shell, an upper seal head, a seal cap, a piston plate, an adjusting plate, an adjusting spring, an adjusting guide rod, a starting and stopping spring, a seal cylinder and the like. According to the specific characteristics of a high-rise building heating system, aiming at the condition of heating water quality in China, a variable flow pressure control device is developed special for the high-rise building heating system and an air conditioner water system. The invention realizes the automatic starting and stopping of current regular way and carries out the automatic pressure reduction and stabilization by using the characteristics of water power and adopting a mechanical device, and integrates automatic starting, automatic stopping, automatic pressure reduction and stabilization and stress variable flow. The invention has the advantages of simple structure, firmness and durability, no noise in multiple pressure reduction, no cavitation, tight sealing without leakage, large caliber of a pressure control auxiliary pipe, difficult blockage because of no need of flowing current during the work, and the like. The invention is especially suitable for heating water quality, and can be widely applied to the high-rise building heating system, the air conditioner water system, a mountain area heating system with large ground attitude difference, all variable flow systems, fixed flow systems, closed systems, deoxygenization systems and the like.
Description
Technical field
The present invention relates to a kind of variable flow pressure control device, especially relate to the variable flow pressure control device in a kind of high rise building heating system and the air-conditioner water system.
Background technology
In the low groups of building, occurred a skyscraper suddenly, common heating method is to establish a boiler or heat exchanger and low sound zone system for skyscraper to be isolated.The former initial cost is big, operating cost is high, and the latter must have steam or the just economical rationality of high-temperature water thermal source.The most economic method is to utilize the direct-connected high-rise heating of low-temperature hydrothermal origin system in original low district, directly connecting heat supply system without water tank for high-rise building that for example occurred in recent years and pressure-reducing valve class methods etc.
Owing in the market pressure-reducing valve is not to develop for direct-connected Heating System of High Residential Buildings specially, the suitable Heating System of High Residential Buildings of some performance parameters.Fig. 4 is exactly this conventional pressure-reducing valve, from textural branch, is referred to as the diaphragm type pressure-reducing valve usually, and barrier film is divided into two chambeies, working chamber and control chambers with the main valve inner chamber.Be communicated with two chambeies by auxiliary tube via needle-valve, decompression auxiliary valve respectively.Its operation principle is, when the pressure-reducing valve outlet pressure was higher than setting pressure, the decompression auxiliary valve cut out, and the piston in the drive controlling chamber is to pressing down, thereby also pressed downward of the flap in linkage work chamber forces main valve to turn down.Otherwise then opening greatly, is purpose to reach the stabilization of export constant pressure.This control mode is feasible in general feedwater, fire-fighting system, but it is just different to be used in heating system.This be because, the pressure of low district heating system return pipe, high during operation, low when stopping.When system stopped, high district heating system return pipe requires to turn-off immediately, and was isolated with low sound zone system, in order to avoid high district high pressure passes to low district.Yet, on the contrary, the pressure-reducing valve of this moment, therefore outlet pressure can not cut off high district and low sound zone system because the reduction of low district return pipe pressure is not only closed has on the contrary opened greatly; They are two years old; The auxiliary tube of pressure-reducing valve is that the capillary of several mm dias is serially connected with two valves again; The running water of cleaning still can; Water quality to heating has just bothered, especially in the pipe be again perennial draingage (duty always have WATER AS FLOW MEDIUM flow) this in fact just become one " filter ", stop up also just unavoidable.To sum up visible; Pressure-reducing valve directly brought be used in the high rise building heating system, not only can not turn-off and must dispose electronic type of valve in addition, repetitive operation is arranged, have a power failure and turn-off insecure critical defect suddenly; And its structure itself is easy to " obstruction " and inoperable problem in addition.
Though directly connecting heat supply system without water tank for high-rise building has overcome the shortcoming of above-mentioned pressure-reducing valve aspects such as " shutoff, decompression, unsteady flow amounts " effectively, it belongs to open system after all, owing to the heating system that can not be used to be provided with deoxygenation with atmosphere.Some of normal-pressure boiler backwater keying valve class and appearance recently can rely on the mechanical shearing device of hydraulic characteristic(s) switch, though have switching function, do not deal with the function of changes in flow rate, and when flow system flow reduced, outlet pressure raise and causes superpressure.
Summary of the invention
The object of the present invention is to provide and a kind ofly utilize the waterpower self-characteristic, adopt mechanical device to realize current automatic Push And Release forward and the voltage stabilizing of reducing pressure automatically simultaneously, integrate automatic unlatching, close automatically, the variable flow pressure control device of the voltage stabilizing of reducing pressure automatically, strain unsteady flow amount.
The object of the invention is implemented by following technical scheme: variable flow pressure control device includes main casing; Said main casing is to be cross one another four-way pipe; Two pipes of horizontal direction are respectively horizontal water inlet pipe, outlet pipe; Being vertical upper and lower two pipes that intersect with horizontal direction is respectively low-voltage driving pipe, high drive pipe; In the lower end of said high drive pipe is water inlet pipe, between said low-voltage driving pipe and said outlet pipe, is provided with communicating pipe, and low-voltage driving pipe and said outlet pipe are connected; In the upper end of said low-voltage driving pipe is upper cover, is provided with sealing cap at said upper cover top; In said low pressure, high drive tube chamber, be provided with piston plate, adjustable plate, regulating spring is regulated guide post, opens and closes spring; Wherein said adjustable plate places in the said piston plate, and said adjustable plate is along the upper and lower slip of said piston plate inwall; The upper end of said keying spring is the adjusting screw(rod) of said sealing cap, and the lower end of said keying spring places said piston plate upper plate top; The top of said adjusting guide post places said keying spring inner, plays a part to carry out spacingly to opening and closing spring, and said adjusting guide post is threaded with said piston plate upper plate, and the lower end of said adjusting guide post places in the said piston plate; Said regulating spring upper end is connected with said adjusting guide post lower end, and the said regulating spring other end is connected with said adjustable plate through connector; Horizontal water inlet pipe tube wall in said horizontal direction is provided with sealing drum.Place in the tube chamber of said outlet pipe of delivery port rear end of said communicating pipe, be provided with the secondary ring of circulus.
At said piston plate inner chamber is cavity; Have first-class through hole at said piston plate antetheca; Have second opening at said piston plate rear wall with respect to first-class through hole, above said second opening of said piston plate rear wall, have the through hole that links to each other with said communicating pipe.
Said adjustable plate is preceding side seal board hatch frame or half opening structure, on the side seal board of back, has the shrouding through hole, and shrouding is provided with at least one small through hole in said bottom.
Sealing cap includes sealing cap body and adjusting screw(rod), and said adjusting screw(rod) is threaded with the sealing cap body.
Said sealing drum one end limit is the disc-shaped structure of outward flanging, fixes with flange, and other end limit is to the in-flanges sealing ring.
Two cross sections of managing horizontal water inlet pipe and outlet pipe of said horizontal direction are circular, or triangle, or quadrangle, or polygon, or oval, or abnormity; Be vertical upper and lower two cross sections of managing low-voltage driving pipes and high drive pipe that intersect for circular with horizontal direction, or triangle, or quadrangle, or polygon, or oval, or abnormity.
At least one side outer wall of said adjustable plate slides up and down along at least one side inwall of said piston plate; Said adjustable plate and said piston plate are cylindrical, or cuboid, or truncated cone-shaped, or cone shape, or other abnormity.
On the inwall of said low-voltage driving pipe or high drive pipe and said piston plate outer wall, at least one pair of positive stop key and keyway are installed.
On said piston plate inwall and said adjustable plate outer wall, at least one pair of positive stop key and keyway are installed.
A kind of variable flow pressure control device also includes piston boit and track; Be provided with said track at said piston boit periphery; Said piston boit is along the upper and lower slip of said track inwall, and said track outer wall is fixedly connected with said piston plate inwall, and said regulating spring upper end is connected with said adjusting guide post; Said regulating spring lower end places in the groove of said piston boit upper end, and the lower end of said piston boit links to each other with said adjustable plate.
The invention has the advantages that: the present invention, cuts the garment according to the figure to current domestic heating water quality present situation according to the particularity of high rise building heating system, is a kind of variable flow pressure control device of high rise building heating system and air-conditioner water system research and development specially.It utilizes the waterpower self-characteristic, adopts mechanical device to realize current automatic Push And Release forward and the voltage stabilizing of reducing pressure automatically simultaneously, integrates automatic unlatching, closes automatically, the voltage stabilizing of reducing pressure automatically, strain unsteady flow amount.Not only overcome the defective of above-mentioned pressure-reducing valve class and directly connecting heat supply system without water tank for high-rise building; And has a simple structure, sturdy and durable; The multi-step pressure reduction noiselessness, do not cavitate; Seal tight nothing leakage, the auxilliary mouth of pipe of pressure control footpath greatly; Need not water flows during work and be difficult for advantages such as obstructions, the suitable especially water quality that heats can be widely used in high rise building heating system, air-conditioner water system, mountain area heating system and all variable flow systems, constant flow water system, closed system and deaerating type of cycles etc. that the ground discrepancy in elevation is big.
Description of drawings:
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
Fig. 3 is the structural representation of embodiment 3.
Fig. 4 is conventional structure of relief pressure valve sketch map.
Fig. 5 connects sketch map for Heating System of High Residential Buildings.
Main casing 1, horizontal water inlet pipe 2, outlet pipe 3, low-voltage driving pipe 4, high drive pipe 5, water inlet pipe 6, communicating pipe 7, upper cover 8; Sealing cap 9, piston plate 10, adjustable plate 11, regulating spring 12 is regulated guide post 13, opens and closes spring 14, upper plate 15, connector 16; Sealing drum 17, sealing cap body 18, adjusting screw(rod) 19, first-class through hole 20, the second openings 21, intercommunicating pore 22, back side seal board 23, shrouding through hole 24; Bottom shrouding 25, small through hole 26, sealing ring 27, piston boit 28, track 29, force (forcing) pump 30, groove 31, secondary ring 32; Positive stop key 33, keyway 34, low district hot water heating pipe network 35, radiator 36, check-valves 37, variable flow pressure control device 38, high drive water pipe 39.
The specific embodiment:
Embodiment 1: as shown in Figure 1; Variable flow pressure control device includes main casing 1; Main casing 1 is to be cross one another four-way pipe; Two pipes of horizontal direction are respectively horizontal water inlet pipe 2, outlet pipe 3, and being vertical upper and lower two pipes that intersect with horizontal direction is respectively low-voltage driving pipe 4, high drive pipe 5, is water inlet pipe 6 in the lower end of high drive pipe 5.Between low-voltage driving pipe 4 and outlet pipe 3, be provided with communicating pipe 7, low-voltage driving pipe 4 and outlet pipe 3 are connected; In the upper end of low-voltage driving pipe 4 is upper cover 8, is provided with sealing cap 9 at upper cover 8 tops, and sealing cap 9 includes sealing cap body 18 and adjusting screw(rod) 19, and adjusting screw(rod) 19 is threaded with sealing cap body 18.In low pressure, high drive tube chamber, be provided with piston plate 10, adjustable plate 11, regulating spring 12 is regulated guide post 13, opens and closes spring 14; Wherein adjustable plate 11 places in the piston plate 10, and adjustable plate 11 outer walls are along the upper and lower slip of piston plate 10 inwalls, and the outer wall shape of adjustable plate 11 is corresponding identical consistent with the inner wall shape of piston plate 10, and adjustable plate is cylindrical.Piston plate 10 inner chambers are cavity, have first-class through hole 20 at piston plate 10 antethecas, have second opening 21 at piston plate 10 rear walls with respect to first-class through hole 20, above second opening 21 of piston plate 10 rear walls, have the through hole 22 that links to each other with communicating pipe 7.Adjustable plate 11 is preceding side seal board hatch frame, on the side seal board 23 of back, has shrouding through hole 24, and shrouding 25 is provided with a small through hole 26 in the bottom.The upper end that opens and closes spring 14 is the adjusting screw(rod) 19 of sealing cap 9, and the lower end that opens and closes spring 14 places the top of piston plate 10 upper plates 15; The top of regulating guide post 13 places and opens and closes spring 14 inside, carries out spacing effect to opening and closing spring 14, regulates guide post 13 and is threaded with piston plate 10 upper plates 15, and the lower end of regulating guide post 13 places in the piston plate 10; Regulating spring 12 upper ends are connected with adjusting guide post 13 lower ends, and regulating spring 12 other ends are connected with adjustable plate 11 through connector 16, and another purpose of regulating guide post 13 is to regulate the initial tension of spring of regulating spring 12; Horizontal water inlet pipe 2 tube walls in the horizontal direction are provided with sealing drum 17.Sealing drum 17 can be the cylinder that rubber or plastic material are processed, and sealing drum one end limit is the disc-shaped structure of outward flanging, fixes with flange, and other end limit is the sealing ring 27 to in-flanges.Place in the tube chamber of outlet pipe 3 of communicating pipe 7 delivery port rear ends, be provided with the secondary ring 32 of circulus, secondary ring 32 is fixed on the port of export of outlet pipe 3.A pair of positive stop key 33 and keyway 34 are installed on the inwall of low-voltage driving pipe 4 and piston plate 10 outer walls.A pair of positive stop key 33 and keyway 34 are installed on piston plate 10 inwalls and adjustable plate 11 outer walls.
Embodiment 2: as shown in Figure 2; Variable flow pressure control device includes main casing 1; Main casing 1 is to be cross one another four-way pipe; Two pipes of horizontal direction are respectively horizontal water inlet pipe 2, outlet pipe 3, and being vertical upper and lower two pipes that intersect with horizontal direction is respectively low-voltage driving pipe 4, high drive pipe 5, is water inlet pipe 6 in the lower end of high drive pipe 5.Between low-voltage driving pipe 4 and outlet pipe 3, be provided with communicating pipe 7, low-voltage driving pipe 4 and outlet pipe 3 are connected; In the upper end of low-voltage driving pipe 4 is upper cover 8, is provided with sealing cap 9 at upper cover 8 tops, and sealing cap 9 includes sealing cap body 18 and adjusting screw(rod) 19, and adjusting screw(rod) 19 is threaded with sealing cap body 18.In low pressure, high drive tube chamber, be provided with piston plate 10, adjustable plate 11, regulating spring 12; Regulate guide post 13, open and close spring 14 and piston boit 28 and track 29, be provided with track 29 at piston boit 28 peripheries; Piston boit 28 is along the upper and lower slip of track 29 inwalls, and track 29 outer walls are fixedly connected with piston plate 10 inwalls, and regulating spring 12 upper ends are connected with adjusting guide post 13; Regulating spring 12 lower ends place in the groove 31 of piston boit 28 upper ends, and the lower end of piston boit 28 links to each other with adjustable plate 11.Wherein adjustable plate 11 places in the piston plate 10, and adjustable plate 11 outer walls are along the upper and lower slip of piston plate 10 inwalls, and the outer wall shape of adjustable plate 11 is corresponding identical consistent with the inner wall shape of piston plate 10, and adjustable plate 11 is along the upper and lower slip of said piston plate 10 inwalls; Adjustable plate is cylindrical.At piston plate 10 inner chambers is cavity, has first-class through hole 20 at piston plate 10 antethecas, has second opening 21 at piston plate 10 rear walls with respect to first-class through hole 20, above second opening 21 of piston plate 10 rear walls, has the through hole 22 that links to each other with communicating pipe 7.Adjustable plate 11 is preceding side seal board hatch frame, on the side seal board 23 of back, has shrouding through hole 24, and shrouding 25 is provided with two small through hole 26 in the bottom.The upper end that opens and closes spring 14 is the adjusting screw(rod) 19 of sealing cap 9, and the lower end that opens and closes spring 14 places piston plate 10 upper plates 15 tops; The top of regulating guide post 13 places and opens and closes spring 14 inside, carries out spacing effect to opening and closing spring 14, regulates guide post 13 and is threaded with piston plate 10 upper plates 15, and the lower end of regulating guide post 13 places in the piston plate 10; Another purpose of regulating guide post 13 is to regulate the initial tension of spring of regulating spring 12; Water inlet pipe 6 tube walls in the horizontal direction are provided with sealing drum 17.Sealing drum 17 is cylinders that rubber is processed, and sealing drum 17 1 end limits are disc-shaped structures of outward flanging, fix with flange, and other end limit is to in-flanges sealing ring 27.Place in the tube chamber of outlet pipe 3 of communicating pipe 7 delivery port rear ends, be provided with the secondary ring 32 of circulus, secondary ring 32 is fixed on the port of export of outlet pipe 3.A pair of positive stop key 33 and keyway 34 are installed on the inwall of high drive pipe 5 and piston plate 10 outer walls.A pair of positive stop key 33 and keyway 34 are installed on piston plate 10 inwalls and adjustable plate 11 outer walls.
Embodiment 4: structure of the present invention also can be the foregoing description structure, and the cross section of horizontal water inlet pipe 2 of two pipes of main casing horizontal direction and outlet pipe 3 is a triangle, or polygon, or oval, or abnormity; Being vertical upper and lower two cross sections of managing low-voltage driving pipes 4 and high drive pipe 5 that intersect with horizontal direction is triangle, or polygon, or oval, or abnormity.
Operation principle: as shown in Figure 5, when the high rise building heating system moved, force (forcing) pump 30 was with the water supply pressurization of the low district of indoor and outdoor hot water heating pipe network 35; Deliver to radiator 36 heat releases in skyscraper (high district); Meanwhile, in variable flow pressure control device 38, utilize high service that valve member is opened automatically, backwater is then through variable flow pressure control device 38 decompressions; Then, turning back to low the district in the return pipe of heating networking goes; When system stopped, variable flow pressure control device 38 was closed automatically, with check-valves 37, high sound zone system and low sound zone system are separated, thus the partition of assurance high low area system static pressure.Yet this has just accomplished the half the of task.Because heating system often has adjusting (urgent day by day energy-conservation more the needs regulated), the pipe network system flow changes, and pressure also will be along with change.For example: when flow reduced, if the not corresponding flow area that reduces of variable flow pressure control device 38, then outlet pressure certainly will raise and cause superpressure.
Variable flow pressure control device 38 of the present invention here is exactly to undertake the automatic open and close of system specially and deal with the unsteady flow amount and the vitals of automatic Regulation.
Variable flow pressure control device 38 of the present invention is such in the concrete operation principle of high rise building heating system: force (forcing) pump 30 is opened; Water supply pressurization with outdoor low district hot water heating pipe network 35; After upwards delivering to height district radiator 36 heat releases of skyscraper; Get into variable flow pressure control device 38, turn back to then in the low district pipe network and go.Meanwhile; In variable flow pressure control device 38, utilize the water pressure of high drive water pipe 39 upwards to promote piston plate 10 and interlock adjustable plate 11 is opened; Thereby make high district backwater successively through shrouding through hole 24, second opening 21, secondary ring 32 annular distances and reduce pressure, the big I of pressure is through regulate communicating pipe 7 voluntarily.When flow system flow reduces when causing that controlled pressure is higher than setting value between second opening 21, secondary ring 32 annular distances, regulating spring 12 presses down, and interlock adjustable plate 11 moves down; Shrouding through hole 24, second opening 21 stagger each other; The aperture turns down, on the contrary the aperture open greatly, thereby it is constant to keep-up pressure.Secondary ring 32 and regulating spring 12 fit adjustment work.
When force (forcing) pump 30 is out of service; Since the water pressure of high drive water pipe 39 reduce suddenly (the check-valves 37 reverse water under high pressures of blocking high sound zone system) cause piston plate 10 deadweight and open and close spring 14 effects down rapidly decline close, thereby realized the automatic cut-out of high district backwater.At this moment, because inlet has sealing drum 17, high sound zone system is high more, and water pressure is big more, and compressing sealing ring 27 is tight more, can guarantee to close watertight.
It is thus clear that; The present invention utilizes the pressure of check-valves 37 front ends to change dexterously and makes switch power, utilizes shrouding through hole 24, second opening, 21 two ends pressure reduction to change and makes to regulate power; Utilize the water conservancy self-characteristic fully, successfully realized current automatic open and close, decompression, voltage stabilizing forward.Obviously, utilize the various water conservancy reclosers of this basic principle manufacturing all can be widely used in the fluid piping systems such as hot water or cold water.
Claims (7)
1. variable flow pressure control device; It is characterized in that it includes main casing, piston boit and track, said main casing is to be cross one another four-way pipe; Two pipes of horizontal direction are respectively horizontal water inlet pipe, outlet pipe; Being vertical upper and lower two pipes that intersect with horizontal direction is respectively low-voltage driving pipe, high drive pipe, is water inlet pipe in the lower end of said high drive pipe, between said low-voltage driving pipe and said outlet pipe, is provided with communicating pipe; In the upper end of said low-voltage driving pipe is upper cover, is provided with sealing cap at said upper cover top; In said low pressure, high drive tube chamber, be provided with piston plate, adjustable plate, regulating spring is regulated guide post, opens and closes spring; Wherein said adjustable plate places in the said piston plate, and said adjustable plate is along the upper and lower slip of said piston plate inwall; The upper end of said keying spring is the adjusting screw(rod) of said sealing cap, and the lower end of said keying spring places said piston plate upper plate top; The top of said adjusting guide post places said keying spring inner, and said adjusting guide post is threaded with said piston plate upper plate, and the lower end of said adjusting guide post places in the said piston plate; Said regulating spring upper end is connected with said adjusting guide post lower end, and the said regulating spring other end is connected with said adjustable plate through connector; Horizontal water inlet pipe tube wall in said horizontal direction is provided with sealing drum; Place in the tube chamber of said outlet pipe of delivery port rear end of said communicating pipe, be provided with the secondary ring of circulus;
At said piston plate inner chamber is cavity; Have first-class through hole at said piston plate antetheca; Have second opening at said piston plate rear wall with respect to first-class through hole, above said second opening of said piston plate rear wall, have the through hole that links to each other with said communicating pipe;
Said adjustable plate is preceding side seal board opening or half opening structure, on the side seal board of back, has the shrouding through hole, and shrouding is provided with at least one small through hole in said bottom;
Be provided with said track at said piston boit periphery; Said piston boit is along the upper and lower slip of said track inwall; Said track outer wall is fixedly connected with said piston plate inwall; Said regulating spring upper end is connected with said adjusting guide post, and said regulating spring lower end places in the groove of said piston boit upper end, and the lower end of said piston boit links to each other with said adjustable plate.
2. a kind of variable flow pressure control device according to claim 1 is characterized in that sealing cap includes sealing cap body and adjusting screw(rod), and said adjusting screw(rod) is threaded with the sealing cap body.
3. a kind of variable flow pressure control device according to claim 1 is characterized in that, said sealing drum one end limit is the disc-shaped structure of outward flanging, fixes with flange, and other end limit is to the in-flanges sealing ring.
4. a kind of variable flow pressure control device according to claim 1 is characterized in that, two cross sections of managing horizontal water inlet pipe and outlet pipe of said horizontal direction are circular, or triangle, or quadrangle, or polygon, or oval, or abnormity; Be vertical upper and lower two cross sections of managing low-voltage driving pipes and high drive pipe that intersect for circular with horizontal direction, or triangle, or quadrangle, or polygon, or oval, or abnormity.
5. a kind of variable flow pressure control device according to claim 1 is characterized in that, at least one side outer wall of said adjustable plate slides up and down along at least one side inwall of said piston plate; Said adjustable plate and said piston plate are cylindrical, or cuboid, or truncated cone-shaped, or cone shape, or other abnormity.
6. a kind of variable flow pressure control device according to claim 1 is characterized in that, on the inwall of said low-voltage driving pipe or high drive pipe and said piston plate outer wall, at least one pair of positive stop key and keyway is installed.
7. a kind of variable flow pressure control device according to claim 1 is characterized in that, on said piston plate inwall and said adjustable plate outer wall, at least one pair of positive stop key and keyway is installed.
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| CN2008101890471A CN101749788B (en) | 2008-12-17 | 2008-12-17 | Variable flow pressure control device |
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| CN2008101890471A CN101749788B (en) | 2008-12-17 | 2008-12-17 | Variable flow pressure control device |
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| CN101749788A CN101749788A (en) | 2010-06-23 |
| CN101749788B true CN101749788B (en) | 2012-01-11 |
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| CN104879297B (en) * | 2015-06-08 | 2018-01-05 | 江苏龙腾鹏达机电有限公司 | A kind of jetting machine aluminum alloy pump head |
| CN110206899B (en) * | 2019-06-11 | 2020-11-20 | 佟磊 | Flow and pressure control device |
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| CN2465108Y (en) * | 2001-02-25 | 2001-12-12 | 殷占民 | Straight flow type multi-function heating regulator |
| EP0872788B1 (en) * | 1997-04-14 | 2002-07-24 | Siemens Building Technologies AG | System control for a heating or cooling plant with a buffer memory |
| CN2533409Y (en) * | 2002-01-25 | 2003-01-29 | 李录祥 | Local heating dual-control device for heating network |
| CN2645063Y (en) * | 2003-03-18 | 2004-09-29 | 齐承英 | Integrated calorimeter for measurement and room temperature control |
| CN201289162Y (en) * | 2008-12-17 | 2009-08-12 | 刘梦真 | Flow quantity changing pressure control device |
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2008
- 2008-12-17 CN CN2008101890471A patent/CN101749788B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0872788B1 (en) * | 1997-04-14 | 2002-07-24 | Siemens Building Technologies AG | System control for a heating or cooling plant with a buffer memory |
| CN2465108Y (en) * | 2001-02-25 | 2001-12-12 | 殷占民 | Straight flow type multi-function heating regulator |
| CN2533409Y (en) * | 2002-01-25 | 2003-01-29 | 李录祥 | Local heating dual-control device for heating network |
| CN2645063Y (en) * | 2003-03-18 | 2004-09-29 | 齐承英 | Integrated calorimeter for measurement and room temperature control |
| CN201289162Y (en) * | 2008-12-17 | 2009-08-12 | 刘梦真 | Flow quantity changing pressure control device |
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Effective date of registration: 20120420 Address after: B building forest road 010010 the Inner Mongolia Autonomous Region Shandan Hohhot tin block two layer Patentee after: Inner Mongolia Wan Xin Hua Technology Equipment Co.,Ltd. Address before: B building forest road 010010 the Inner Mongolia Autonomous Region Shandan Hohhot tin two million Inner Mongolia Huaxin technology equipment limited liability company Co-patentee before: Liang Xinghua Patentee before: Liang Qinghua Effective date of registration: 20120420 Address after: B building forest road 010010 the Inner Mongolia Autonomous Region Shandan Hohhot tin two million Inner Mongolia Huaxin technology equipment limited liability company Co-patentee after: Liang Xinghua Patentee after: Liang Qinghua Address before: B building forest road 010010 the Inner Mongolia Autonomous Region Shandan Hohhot tin two million Inner Mongolia Huaxin technology equipment limited liability company Co-patentee before: Liang Qinghua Patentee before: Liu Mengzhen Co-patentee before: Liang Xinghua |
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Effective date of registration: 20200525 Address after: 010050 Jinwu Road North, Jinchuan Development Zone, Hohhot City, Inner Mongolia Autonomous Region Patentee after: HOHHOT HIGH-RISE HEATING TECHNOLOGY Co.,Ltd. Address before: B building forest road 010010 the Inner Mongolia Autonomous Region Shandan Hohhot tin block two layer Patentee before: Inner Mongolia Wan Xin Hua Technology Equipment Co.,Ltd. |