CN105806146A - Water supplementing constant-pressure system of pipe type heat exchanger and abnormal operation control method - Google Patents
Water supplementing constant-pressure system of pipe type heat exchanger and abnormal operation control method Download PDFInfo
- Publication number
- CN105806146A CN105806146A CN201610285804.XA CN201610285804A CN105806146A CN 105806146 A CN105806146 A CN 105806146A CN 201610285804 A CN201610285804 A CN 201610285804A CN 105806146 A CN105806146 A CN 105806146A
- Authority
- CN
- China
- Prior art keywords
- water
- pressure
- electric switching
- switching valve
- valve
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention relates to a water supplementing constant-pressure system of a pipe type heat exchanger and an abnormal operation control method. The water supplementing constant-pressure system comprises a nitrogen charging system which is used for maintaining the constant pressure of a whole pipe type heat exchanger system so as to avoid vaporization of heating medium water at the lowest pressure position and is started when the pressure in the pipe type heat exchanger system is too low, a water supplementing system used for supplementing the pipe type heat exchanger system for water in the water feed process and during water leakage of the pipe type heat exchanger system so that it can be ensured that a heating medium circulation system is filled with water, an exhaust system used for maintaining the proper running pressure of the pipe type heat exchanger system so as to ensure that the system does not exceed the pressure, and a draining system used for draining water when the liquid level of a heating medium water supplementing water tank is too high or during overhauling so that the influences on system functions due to the fact that water supplementing of the pipe type heat exchanger system is excessive and the water tank is excessively full are avoided. The water supplementing constant-pressure system of the pipe type heat exchanger has the beneficial effects that the closed type heating medium water supplementing tank is arranged, the whole pipe type heat exchanger is closed, scaling phenomenon on the heating medium water due to the fact that oxygen-containing gas enters the pipe type heat exchanger system can be effectively prevented. Due to the heating medium water supplementing constant-pressure system, it can be ensured that the whole heat exchanger system runs stably and safely for a long term.
Description
Technical field
Patent of the present invention relates to a kind of water-supply and pressure-stabling system, the water-supply and pressure-stabling system of especially a kind of pipe heat exchanger and misoperation control mode.Belong to the control field of heat exchanger.
Background technology
For solving coal-burning power plant's ubiquitous " gypsum rain " problem at present, and meeting the emission request of flue gas pollutant increasingly stringent better, generally arrange pipe heat exchanger system, it is closed system under normal operating conditions.Often occur the problem that in running that in system, high-order equipment pressure is low, when flue-gas temperature is higher, in heat exchanger tube, heating agent coolant-temperature gage is corresponding higher, easily causes the vaporization of water；System long-play there will be the leakage of heat medium water equipment or pipeline, it is necessary to supplements heat medium water in time；Because of flue gas and variations in temperature etc. or heat medium water failure of pump, system causes that in system, pressure increases；System water supplement too much or temperature raise heat medium water expansion etc. and cause heating agent hypervolia in system；Oxygen-containing gas enters pipe heat exchanger system and easily causes equipment or pipeline scale etc..The appearance of the problems referred to above is all easily caused pipe heat exchanger system and can not steady in a long-term run, and even jeopardizes safety.
Summary of the invention
It is an object of the invention to overcome prior art not enough, it is provided that a kind of pipe heat exchanger water-supply and pressure-stabling system, it may be achieved the low liquid level moisturizing of system, high liquid level draining；High high pressure quick pressure releasing, high pressure exhaust pressure relief, low-pressure nitrogen charging pressurize, and fine adjustment can be realized.
For achieving the above object, present invention employs techniques below scheme:
This pipe heat exchanger water-supply and pressure-stabling system,
Including Nitrogen filling system, the pressure in order to maintain whole pipe heat exchanger system keeps constant, it is to avoid the vaporization of minimum pressure place heat medium water；Including nitrogen adjustment valve, nitrogen electric switching valve and connection pipeline；Nitrogen adjustment valve is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that moment nitrogen amount is excessive；It is normally closed under nitrogen electric switching valve normal operating condition, opens when hypotony in system；
Water charging system, in order to carry out moisturizing when upper water process and system are leaked to system, it is ensured that in heating agent blood circulation, water is full of；Including desalination water regulating valve, moisturizing electric switching valve and connection pipeline；Desalination water regulating valve is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that moment demineralized water flow is excessive；It is normally closed under moisturizing electric switching valve normal operating condition, when in system, water or leak causes opening when heat medium water water supply tank liquid level is too low；
Gas extraction system, is in suitable operating pressure in order to maintain system, it is ensured that system is superpressure not；Including exhaust regulating valve, discharge line valve, aerofluxus electric switching valve, relief valve and connection pipeline；Exhaust regulating valve is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that in the excessive system of moment capacity, pressure declines too fast；Discharge line valve is used for isolation maintenance aerofluxus electric switching valve；It is normally closed under aerofluxus electric switching valve normal operating condition, opens when superpressure in system；Relief valve take-off when pressure moment is excessive in system, it is ensured that system safety operation；
Drainage system, draining during in order to or maintenance too high in heat medium water water supply tank liquid level, it is prevented that expire very much influential system function because of the too much water tank of system water supplement；Including row's water regulating valve, drain stop valve, draining electric switching valve and connection pipeline；Row's water regulating valve is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that in the excessive system of moment displacement, liquid level declines too fast；Drain stop valve is used for isolation drainage for overhaul electric switching valve；It is normally closed under aerofluxus electric switching valve normal operating condition, opens when heat medium water water supply tank liquid level is too high；
Liquidometer with remote transfer signal and pressure transmitter respectively in order to monitor liquid level and the pressure of heat medium water water supply tank, in order to interlocked control nitrogen electric switching valve, moisturizing electric switching valve, aerofluxus electric switching valve, draining electric switching valve switch.
The misoperation control mode of this pipe heat exchanger water-supply and pressure-stabling system, comprises the steps:
Step one, the liquid level definite value arranging heat medium water water supply tank according to system and pressure definite value, containing normal level, low liquid level, high liquid level and normal pressure, low-pressure, high pressure and high high pressure.
Step 2, nitrogen electric switching valve and pressure transmitter interlocking, when pressure transmitter shows low-pressure, nitrogen electric switching valve is opened, and shows normal pressure to pressure transmitter.
Step 3, moisturizing electric switching valve are interlocked with the liquidometer with remote transfer signal, and when the liquidometer with remote transfer signal shows low liquid level, moisturizing electric switching valve is opened, and shows normal level to the liquidometer with remote transfer signal.
Step 4, aerofluxus electric switching valve and pressure transmitter interlocking, when pressure transmitter shows high pressure, aerofluxus electric switching valve is opened, and shows normal pressure to pressure transmitter.
Step 5, draining electric switching valve are interlocked with the liquidometer with remote transfer signal, and when the liquidometer with remote transfer signal shows high liquid level, draining electric switching valve is opened, and shows normal level to the liquidometer with remote transfer signal.
As preferably: when, in water or drainage procedure in system, each motor switch valve is forced manually opened or closes.
The invention has the beneficial effects as follows:
1, by arranging enclosed heat medium water water supply tank, whole pipe heat exchanger system lock, effectively prevent oxygen-containing gas from entering system and cause heat medium water that scale formation occurs.
2, heat medium water water-supply and pressure-stabling system can ensure whole heat exchanger system long-term stability safe operation.By nitrogen charging level pressure, the vaporization of water in effective anti-locking system.By aerofluxus release of pressure, effectively prevent system overpressure.By drainage system, effectively prevent heat medium water water supply tank moisturizing overfill.
3, can ensure to occur to regulate in time during misoperation in system, make the fast quick-recovery of system to normal operating condition.
4, system is simple and reliable, economical and practical, only passes through to arrange the manual of necessity and electrically operated valve and connect pipeline to realize several functions.
Accompanying drawing explanation
Fig. 1 is present system schematic diagram；
Description of reference numerals: heat medium water water supply tank 1, heating agent blood circulation 2, nitrogen adjustment valve 3, nitrogen electric switching valve 4, demineralized water adjustable valve 5, moisturizing electric switching valve 6, exhaust regulating valve 7, discharge line valve 8, aerofluxus electric switching valve 9, row water regulating valve 10, drain stop valve 11, draining electric switching valve 12, relief valve 13, the liquidometer 14 with remote transfer signal, pressure transmitter 15.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further.The explanation of following embodiment is only intended to help and understands the present invention.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention carries out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
As it is shown in figure 1, the pipe heat exchanger water-supply and pressure-stabling system of the present embodiment, it is divided into four subsystems:
Nitrogen filling system, the pressure in order to maintain whole pipe heat exchanger system keeps constant, it is to avoid the vaporization of minimum pressure place heat medium water.Including nitrogen adjustment valve 3, nitrogen electric switching valve 4 and connection pipeline etc..Nitrogen adjustment valve 3 is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that moment nitrogen amount is excessive；It is normally closed under nitrogen electric switching valve 4 normal operating condition, opens when hypotony in system.
Water charging system, in order to carry out moisturizing when upper water process and system are leaked to system, it is ensured that in heating agent blood circulation, water is full of.Including desalination water regulating valve 5, moisturizing electric switching valve 6 and connection pipeline etc..Desalination water regulating valve 5 is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that moment demineralized water flow is excessive；It is normally closed under moisturizing electric switching valve 4 normal operating condition, when in system, water or leak causes opening when heat medium water water supply tank liquid level is too low.
Gas extraction system, is in suitable operating pressure in order to maintain system, it is ensured that system is superpressure not.Including exhaust regulating valve 7, discharge line valve 8, aerofluxus electric switching valve 9, relief valve 13 and connection pipeline etc..Exhaust regulating valve 5 is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that in the excessive system of moment capacity, pressure declines too fast；Discharge line valve 8 is used for isolation maintenance aerofluxus electric switching valve 9；It is normally closed under aerofluxus electric switching valve 9 normal operating condition, opens when superpressure in system.Relief valve 13 take-off when pressure moment is excessive in system, it is ensured that system safety operation.
Drainage system, draining during in order to or maintenance too high in heat medium water water supply tank liquid level, it is prevented that expire very much influential system function because of the too much water tank of system water supplement.Including row's water regulating valve 10, drain stop valve 11, draining electric switching valve 12 and connection pipeline etc..Row's water regulating valve 10 is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that in the excessive system of moment displacement, liquid level declines too fast；Drain stop valve 11 is used for isolation drainage for overhaul electric switching valve 12；It is normally closed under aerofluxus electric switching valve 12 normal operating condition, opens when heat medium water water supply tank liquid level is too high.
Liquidometer 14 with remote transfer signal and pressure transmitter 15 respectively in order to monitor liquid level and the pressure of heat medium water water supply tank, in order to the above-mentioned nitrogen electric switching valve 4 of interlocked control, moisturizing electric switching valve 6, aerofluxus electric switching valve 9, draining electric switching valve 12 switch.
The above-mentioned nitrogen electric switching valve 4 of the present invention, moisturizing electric switching valve 6, aerofluxus electric switching valve 9, draining electric switching valve 12 switch may be used without electromagnetic valve, above-mentioned nitrogen adjustment valve 3, demineralized water adjustable valve 5, exhaust regulating valve 7, row's water regulating valve 10 close to certain aperture before system is run, without special circumstances, no longer it is adjusted when system is properly functioning.
The misoperation control mode of this pipe heat exchanger water-supply and pressure-stabling system, comprises the steps:
Liquid level definite value and the pressure definite value of heat medium water water supply tank 1 are set according to system, containing normal level, low liquid level, high liquid level and normal pressure, low-pressure, high pressure and high high pressure.
Nitrogen electric switching valve 4 and pressure transmitter 15 are interlocked, and when pressure transmitter 15 shows low-pressure, nitrogen electric switching valve 4 is opened, and shows normal pressure to pressure transmitter 15.
Moisturizing electric switching valve 6 is interlocked with the liquidometer 14 with remote transfer signal, and when the liquidometer 14 with remote transfer signal shows low liquid level, moisturizing electric switching valve 6 is opened, and shows normal level to the liquidometer 14 with remote transfer signal.
Aerofluxus electric switching valve 9 and pressure transmitter 15 are interlocked, and when pressure transmitter 15 shows high pressure, aerofluxus electric switching valve 9 is opened, and shows normal pressure to pressure transmitter 15.
Draining electric switching valve 12 is interlocked with the liquidometer 14 with remote transfer signal, and when the liquidometer 14 with remote transfer signal shows high liquid level, draining electric switching valve 12 is opened, and shows normal level to the liquidometer 14 with remote transfer signal.
When, in water or drainage procedure in system, each motor switch valve is forced manually opened or closes.
The present invention is compared with the prior art: pipe heat exchanger generally arranges heat medium water water supply tank at present, itself or open design only realize water supplement function, or design of remaining silent realizes water supplement function and design safety valve realizes express delivery release of pressure function, and above-mentioned technology all can not meet the needs of pipe heat exchanger system stability safe operation.The present invention is by setting up valve and pipeline, and carries out corresponding interlocked control, it may be achieved several functions and regulable control under abnormality, and system is reasonable, practical.
Claims (3)
1. a pipe heat exchanger water-supply and pressure-stabling system, it is characterised in that:
Including Nitrogen filling system, the pressure in order to maintain whole pipe heat exchanger system keeps constant, it is to avoid the vaporization of minimum pressure place heat medium water；Including nitrogen adjustment valve (3), nitrogen electric switching valve (4) and connection pipeline；Nitrogen adjustment valve (3) is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that moment nitrogen amount is excessive；It is normally closed under nitrogen electric switching valve (4) normal operating condition, opens when hypotony in system；
Water charging system, in order to carry out moisturizing when upper water process and system are leaked to system, it is ensured that in heating agent blood circulation, water is full of；Including desalination water regulating valve (5), moisturizing electric switching valve (6) and connection pipeline；Desalination water regulating valve (5) is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that moment demineralized water flow is excessive；It is normally closed under moisturizing electric switching valve (4) normal operating condition, when in system, water or leak causes opening when heat medium water water supply tank liquid level is too low；
Gas extraction system, is in suitable operating pressure in order to maintain system, it is ensured that system is superpressure not；Including exhaust regulating valve (7), discharge line valve (8), aerofluxus electric switching valve (9), relief valve (13) and connection pipeline；Exhaust regulating valve (5) is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that in the excessive system of moment capacity, pressure declines too fast；Discharge line valve (8) is used for isolation maintenance aerofluxus electric switching valve (9)；It is normally closed under aerofluxus electric switching valve (9) normal operating condition, opens when superpressure in system；Relief valve (13) take-off when pressure moment is excessive in system, it is ensured that system safety operation；
Drainage system, draining during in order to or maintenance too high in heat medium water water supply tank liquid level, it is prevented that expire very much influential system function because of the too much water tank of system water supplement；Including row's water regulating valve (10), drain stop valve (11), draining electric switching valve (12) and connection pipeline；Row's water regulating valve (10) is stop valve, keeps relatively small guide vane, plays throttling action, it is prevented that in the excessive system of moment displacement, liquid level declines too fast；Drain stop valve (11) is used for isolation drainage for overhaul electric switching valve (12)；It is normally closed under aerofluxus electric switching valve (12) normal operating condition, opens when heat medium water water supply tank liquid level is too high；
Liquidometer (14) with remote transfer signal and pressure transmitter (15) respectively in order to monitor liquid level and the pressure of heat medium water water supply tank, in order to interlocked control nitrogen electric switching valve (4), moisturizing electric switching valve (6), aerofluxus electric switching valve (9), draining electric switching valve (12) switch.
2. the misoperation control mode of the pipe heat exchanger water-supply and pressure-stabling system described in a claim 1, it is characterised in that comprise the steps:
Step one, the liquid level definite value arranging heat medium water water supply tank (1) according to system and pressure definite value, containing normal level, low liquid level, high liquid level and normal pressure, low-pressure, high pressure and high high pressure.
Step 2, nitrogen electric switching valve (4) and pressure transmitter (15) interlocking, when pressure transmitter (15) shows low-pressure, nitrogen electric switching valve (4) is opened, and shows normal pressure to pressure transmitter (15).
Step 3, moisturizing electric switching valve (6) and liquidometer (14) interlocking with remote transfer signal, when the liquidometer (14) with remote transfer signal shows low liquid level, moisturizing electric switching valve (6) is opened, and shows normal level to the liquidometer (14) with remote transfer signal.
Step 4, aerofluxus electric switching valve (9) and pressure transmitter (15) interlocking, when pressure transmitter (15) shows high pressure, aerofluxus electric switching valve (9) is opened, and shows normal pressure to pressure transmitter (15).
Step 5, draining electric switching valve (12) and liquidometer (14) interlocking with remote transfer signal, when the liquidometer (14) with remote transfer signal shows high liquid level, draining electric switching valve (12) is opened, and shows normal level to the liquidometer (14) with remote transfer signal.
3. the misoperation control mode of pipe heat exchanger water-supply and pressure-stabling system according to claim 2, it is characterised in that: when, in water or drainage procedure in system, each motor switch valve is forced manually opened or closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285804.XA CN105806146A (en) | 2016-04-29 | 2016-04-29 | Water supplementing constant-pressure system of pipe type heat exchanger and abnormal operation control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285804.XA CN105806146A (en) | 2016-04-29 | 2016-04-29 | Water supplementing constant-pressure system of pipe type heat exchanger and abnormal operation control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105806146A true CN105806146A (en) | 2016-07-27 |
Family
ID=56459023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610285804.XA Pending CN105806146A (en) | 2016-04-29 | 2016-04-29 | Water supplementing constant-pressure system of pipe type heat exchanger and abnormal operation control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105806146A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546123A (en) * | 2016-12-10 | 2017-03-29 | 大连福佳·大化石油化工有限公司 | A kind of water-cooled recuperated cycle system of transformation and its control method |
| CN114291447A (en) * | 2021-12-17 | 2022-04-08 | 华电电力科学研究院有限公司 | Water tank capable of isolating air |
| CN114659330A (en) * | 2022-03-11 | 2022-06-24 | 西安热工研究院有限公司 | Closed water system water quality improvement and cavitation erosion prevention system and operation method |
| CN115111850A (en) * | 2022-06-09 | 2022-09-27 | 华能国际电力股份有限公司丹东电厂 | Closed cooling water circulation system of power plant |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2284931Y (en) * | 1996-10-29 | 1998-06-24 | 北京市新光锅炉机械设备安装工程公司 | Automatic constant voltage water feeder for hot-water boiler |
| CN203048625U (en) * | 2012-12-04 | 2013-07-10 | 河南中原绿能高科有限责任公司 | Novel circulating water exhaust pressure stabilizing device |
| JP2013170704A (en) * | 2012-02-17 | 2013-09-02 | Tlv Co Ltd | Heat exchanger |
| CN104344730A (en) * | 2013-08-02 | 2015-02-11 | 上海振世能源科技有限公司 | Smoke waste heat recycling system |
| CN104848730A (en) * | 2014-11-03 | 2015-08-19 | 高天红 | Steam temperature reducing plate type heat exchange unit |
| CN104848296A (en) * | 2014-10-28 | 2015-08-19 | 青岛万力科技有限公司 | Energy-saving comfortable full-automatic plate heat exchanger unit |
| CN205619818U (en) * | 2016-04-29 | 2016-10-05 | 浙江天地环保科技有限公司 | Tubular heat exchanger moisturizing level pressure system |
-
2016
- 2016-04-29 CN CN201610285804.XA patent/CN105806146A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2284931Y (en) * | 1996-10-29 | 1998-06-24 | 北京市新光锅炉机械设备安装工程公司 | Automatic constant voltage water feeder for hot-water boiler |
| JP2013170704A (en) * | 2012-02-17 | 2013-09-02 | Tlv Co Ltd | Heat exchanger |
| CN203048625U (en) * | 2012-12-04 | 2013-07-10 | 河南中原绿能高科有限责任公司 | Novel circulating water exhaust pressure stabilizing device |
| CN104344730A (en) * | 2013-08-02 | 2015-02-11 | 上海振世能源科技有限公司 | Smoke waste heat recycling system |
| CN104848296A (en) * | 2014-10-28 | 2015-08-19 | 青岛万力科技有限公司 | Energy-saving comfortable full-automatic plate heat exchanger unit |
| CN104848730A (en) * | 2014-11-03 | 2015-08-19 | 高天红 | Steam temperature reducing plate type heat exchange unit |
| CN205619818U (en) * | 2016-04-29 | 2016-10-05 | 浙江天地环保科技有限公司 | Tubular heat exchanger moisturizing level pressure system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546123A (en) * | 2016-12-10 | 2017-03-29 | 大连福佳·大化石油化工有限公司 | A kind of water-cooled recuperated cycle system of transformation and its control method |
| CN106546123B (en) * | 2016-12-10 | 2018-09-04 | 大连福佳·大化石油化工有限公司 | A kind of the water cooling heat exchange cycle system and its control method of transformation |
| CN114291447A (en) * | 2021-12-17 | 2022-04-08 | 华电电力科学研究院有限公司 | Water tank capable of isolating air |
| CN114659330A (en) * | 2022-03-11 | 2022-06-24 | 西安热工研究院有限公司 | Closed water system water quality improvement and cavitation erosion prevention system and operation method |
| CN115111850A (en) * | 2022-06-09 | 2022-09-27 | 华能国际电力股份有限公司丹东电厂 | Closed cooling water circulation system of power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105806146A (en) | Water supplementing constant-pressure system of pipe type heat exchanger and abnormal operation control method | |
| CN206488054U (en) | A kind of pressure release reflux for pump discharge | |
| CN105065244A (en) | Pneumatic pump control device | |
| CN104575636A (en) | Small-flow reflowing and flow limiting control device | |
| KR920009648B1 (en) | Emergency feedwater system for generators of a nuclear power plant | |
| CN208137030U (en) | A kind of high lift aqueduct water hammer-resistant surge tower of long range | |
| CN205619818U (en) | Tubular heat exchanger moisturizing level pressure system | |
| CN208564519U (en) | A kind of instant re-injection system of novel oilfield testing well sewage | |
| CN204285436U (en) | A kind of Subcritical Units is without electric pump feedwater flow control system | |
| CN214597288U (en) | Low-pressure continuous flash evaporation condensate recovery device | |
| CN101983782B (en) | High-pressure water cleaning device | |
| CN204490544U (en) | The device that the water seal of a kind of fast quick-recovery deoxygenator normally runs | |
| CN204407020U (en) | A kind of low discharge backflow and current limiting control apparatus | |
| CN210141604U (en) | Automatic water supplementing and pressure stabilizing system of intelligent heat exchange unit | |
| CN209763212U (en) | Distributed heat supply network energy storage voltage stabilizing system | |
| RU2050025C1 (en) | Emergency cooling system of reactor installation | |
| CN111365554A (en) | Device for carrying out system pressure stabilization and medium capacity regulation by adopting gas | |
| CN219317283U (en) | Propane dehydrogenation device reactor vacuum pumping system | |
| CN111996319B (en) | High-water-level accident handling method for nitrogen pressure tank of demineralized water system | |
| CN104863888B (en) | Low pressure centrifugal blower fan pressure limiting water seal arrangement | |
| CN213089449U (en) | High-temperature pump device in refining device | |
| CN212745055U (en) | Generator sealing oil system | |
| CN217154328U (en) | Unpowered small-sized voltage stabilizing system | |
| CN212899194U (en) | Device for preventing backup hydraulic pump from starting abrasion | |
| JP3245388U (en) | Vacuum oil purification equipment for steam turbine sealing oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 310012, 99 Huaxing Road, Hangzhou, Zhejiang (Hangzhou Neusoft venture building) Applicant after: Zhejiang Tiandi Environmental Protection Technology Co., Ltd. Applicant after: ZHEJIANG ZHENENG ELECTRIC POWER CO., LTD. Address before: 310003, room 603, Guoxin building, No. 108 Feng Lu, Zhejiang, Hangzhou Applicant before: Zhejiang Tiandi Environmental Protection Engineering Co., Ltd. Applicant before: ZHEJIANG ZHENENG ELECTRIC POWER CO., LTD. |
|
| COR | Change of bibliographic data | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160727 |