CN104864440A - Heat exchange unit for heat supply - Google Patents

Heat exchange unit for heat supply Download PDF

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Publication number
CN104864440A
CN104864440A CN201410678896.9A CN201410678896A CN104864440A CN 104864440 A CN104864440 A CN 104864440A CN 201410678896 A CN201410678896 A CN 201410678896A CN 104864440 A CN104864440 A CN 104864440A
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CN
China
Prior art keywords
heat exchanger
pipe
shell
circulating pump
tube
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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
Application number
CN201410678896.9A
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Chinese (zh)
Inventor
不公告发明人
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Qingdao Tongchuang Energy Saving Environmental Protection Engineering Co Ltd
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Qingdao Tongchuang Energy Saving Environmental Protection Engineering Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Qingdao Tongchuang Energy Saving Environmental Protection Engineering Co Ltd filed Critical Qingdao Tongchuang Energy Saving Environmental Protection Engineering Co Ltd
Priority to CN201410678896.9A priority Critical patent/CN104864440A/en
Publication of CN104864440A publication Critical patent/CN104864440A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a heat exchange unit for heat supply. The heat exchange unit mainly comprises a shell-and-tube heat exchanger, a plate heat exchanger, a circulating pump, a variable-frequency water replenishing pump and a control cabinet, wherein a primary outlet of the shell-and-tube heat exchanger is connected with a serial connection pipe connected with a primary inlet of the plate heat exchanger, a secondary inlet and a secondary outlet of the plate heat exchanger are connected with a secondary water return pipe and a secondary water supply pipe respectively, the circulating pump is mounted on the secondary water return pipe, a cooling circulating pipe is also connected with the secondary water return pipe and behind the circulating pump and connected with a secondary inlet of the shell-and-tube heat exchanger, and a secondary outlet of the shell-and-tube heat exchanger is connected with a cooling water supply pipe connected with the secondary water supply pipe. The heat exchange unit has the benefits that the shell-and-tube heat exchanger and the plate heat exchanger are combined for heat supply, the problem that the plate heat exchanger cannot be adapted to high-temperature steam is effectively solved, the application range of the plate heat exchanger is enlarged, and the heat exchange unit also has the advantages of economy, safety, good stability, capability of saving energy and the like and is convenient to popularize and apply.

Description

A kind of heating heat-exchange unit
Technical field
The present invention relates to heat-exchange unit technical field, specifically a kind of heating heat-exchange unit.
Background technology
Heat-exchange unit takes up an area less owing to having, use flexibly and the advantage such as effects of energy saving and emission reduction is good, at present in many residential quarters, market, hotel, school, hospital, the occasions such as factory widely use, and mainly adopt plate-type heat-exchange unit to carry out heating, but the impact of the factors such as the heat-resisting and high temperature resistant condition difference of sealing strip is subject to due to formula of the analysing heat exchanger in plate-type heat-exchange unit, under the condition using high-temperature steam, application plate-type heat-exchange unit will be restricted, usually when vapor (steam) temperature is more than more than 150 DEG C, plate-type heat-exchange unit must not be used, otherwise will safety be jeopardized.
Summary of the invention
The object of the present invention is to provide a kind of heating heat-exchange unit be suitable under high-temperature steam condition.
The technical solution adopted for the present invention to solve the technical problems is: a kind of heating heat-exchange unit is primarily of shell-and-tube heat exchanger, plate type heat exchanger, circulating pump, moisturizing variable frequency pump and switch board composition, an import of shell-and-tube heat exchanger is connected with steam pipe, and steam temperature-sensing valve is housed on steam pipe, the once outlet of shell-and-tube heat exchanger is connected to serises connecting tube and is connected with an import of plate type heat exchanger, serises connecting tube is equipped with electromagnetic shut-off valve, serises connecting tube is provided with temperature sensor one after electromagnetic shut-off valve, the once outlet of plate type heat exchanger is connected with condensed water discharge pipe, condensed water discharge pipe is equipped with steam trap, the secondary import of plate type heat exchanger is connected with secondary returning water pipe and secondary water-supply pipe respectively with secondary outlet, secondary returning water pipe is equipped with filter, secondary returning water pipe is equipped with circulating pump after the filters, secondary returning water pipe is before circulating pump, pressure sensor one is provided with after filter, secondary returning water pipe is before circulating pump, also filling pipe and relief tube is connected to respectively after filter, and moisturizing variable frequency pump is housed on filling pipe, relief tube is equipped with pressure release electromagnetic valve, secondary returning water pipe is also connected to desuperheat circulation pipe and is connected with the secondary import of described shell-and-tube heat exchanger after circulating pump, the secondary outlet of shell-and-tube heat exchanger is connected to desuperheat feed pipe and is connected with described secondary water-supply pipe, secondary water-supply pipe is provided with pressure sensor two and temperature sensor two after access desuperheat feed pipe, and on desuperheat circulation pipe, balance regulating valve is housed.Described circulating pump, moisturizing variable frequency pump, steam temperature-sensing valve, temperature sensor one, electromagnetic shut-off valve, pressure release electromagnetic valve, pressure sensor one, pressure sensor two are connected with switch board wiring respectively with temperature sensor two, switch board is also connected with the outdoor temperature sensor for detecting outdoor environment temperature disposed in the outdoor, GPRS transceiver module is also equiped with in switch board, described GPRS transceiver module mainly carries out real-time radio transmission and reception to relevant data signal, is convenient to realize wireless remote monitering.
Operation principle of the present invention is, first shell-and-tube heat exchanger carries out heat exchange desuperheat to the steam source that steam pipe is carried, plate type heat exchanger is accessed again by serises connecting tube, simultaneously a part of flow of secondary returning water pipe after circulating pump pressurization enters shell-and-tube heat exchanger by desuperheat circulation pipe and heats after balance regulating valve, and then import secondary water-supply pipe by desuperheat feed pipe, the outdoor environment temperature detected according to outdoor temperature sensor is provided secondary water-supply pipe water outlet temperature setting value by switch board system adaptively, then the secondary water-supply pipe water outlet temperature setting value provided according to system relative to temperature sensor two by steam temperature-sensing valve regulates its aperture automatically, the temperature sensor two be contained on secondary water-supply pipe detects secondary water-supply pipe leaving water temperature, when the water outlet temperature setting value that secondary water-supply pipe leaving water temperature provides lower than system being detected, steam temperature-sensing valve will tune up its aperture, steam pipe flow is increased, secondary water-supply pipe leaving water temperature increases, otherwise, then turn steam temperature-sensing valve aperture down and reduce steam pipe flow, secondary water-supply pipe leaving water temperature reduces, adjustment like this, in secondary water-supply pipe leaving water temperature is maintained water outlet temperature setting value that system provides, realize the present invention energy-conservation, comfortable heating effect, be contained in balance regulating valve on desuperheat circulation pipe for regulating the flow of desuperheat circulation pipe, be tending towards identical to enable the secondary returning water pipe discharge pressure entered after shell-and-tube heat exchanger and plate type heat exchanger, thus ensure that heat exchange of the present invention, circulating effect, the temperature sensor one be contained on serises connecting tube detects the heat source temperature that serises connecting tube enters plate type heat exchanger, when detecting heat source temperature that serises connecting tube enters plate type heat exchanger to maximum temperature values higher than systemic presupposition, electromagnetic shut-off valve is closed immediately and is cut off plate type heat exchanger thermal source, thus protection plate type heat exchanger is not damaged, guarantee safety and avoid high temperature to threaten, meanwhile, the pressure sensor one be contained on secondary returning water pipe detects circulating pump intake pressure, when the pressure of return water steady state value of circulating pump intake pressure lower than systemic presupposition being detected, moisturizing variable frequency pump will automatically start and carry out frequency-changing pressure stabilizing moisturizing relative to pressure sensor one according to the pressure of return water steady state value of systemic presupposition, voltage stabilizing, be stabilized on the pressure of return water steady state value of systemic presupposition to make circulating pump intake pressure, when detecting that circulating pump intake pressure is stabilized in the pressure of return water steady state value of systemic presupposition, and when maintaining 30s ~ 60s, moisturizing variable frequency pump is by shutdown and enter dormancy holding state, so repeatedly, realize voltage stabilizing of the present invention, level pressure and termination of pumping energy-saving effect, when the pressure of return water steady state value of circulating pump intake pressure higher than systemic presupposition being detected, and reach systemic presupposition super-pressure force value and above time, pressure release electromagnetic valve will open sluicing automatically, pressure release, until when circulating pump intake pressure falls back to the pressure of return water steady state value of systemic presupposition, pressure release electromagnetic valve will be closed automatically, when the anhydrous force value of circulating pump intake pressure lower than systemic presupposition being detected, circulating pump is by stoppage protection, when circulating pump intake pressure recovers, and detect circulating pump intake pressure systemic presupposition pressure of return water steady state value and above time, circulating pump automatically starts and reverts to normal operating condition.
Each related temperature signals, pressure signal that described switch board detects according to described outdoor temperature sensor, temperature sensor one, temperature sensor two, pressure sensor one and pressure sensor two; respectively Automatic Control and protection are carried out to circulating pump, moisturizing variable frequency pump, steam temperature-sensing valve, electromagnetic shut-off valve and pressure release electromagnetic valve; switch board also receives and sends relevant wireless data signal by GPRS transceiver module in GPRS mode simultaneously, realizes the unattended remote wireless monitoring of the present invention and management.
The invention has the beneficial effects as follows, the present invention utilizes shell-and-tube heat exchanger and plate type heat exchanger combination to carry out heating, not only efficiently solve the problem that plate type heat exchanger adapts to high-temperature steam, expand the range of application of plate type heat exchanger, but also there is energy-conservation, the advantage such as economy, safety and good stability, easy to utilize.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1, shell-and-tube heat exchanger, 2, plate type heat exchanger, 3, circulating pump, 4, moisturizing variable frequency pump, 5, switch board, 6, GPRS transceiver module, 7, outdoor temperature sensor, 8, steam pipe, 9, steam temperature-sensing valve, 10, desuperheat feed pipe, 11, temperature sensor one, 12, electromagnetic shut-off valve, 13, serises connecting tube, 14, condensed water discharge pipe, 15, steam trap, 16, secondary returning water pipe, 17, filter, 18, relief tube, 19, pressure release electromagnetic valve, 20, pressure sensor one, 21, balance regulating valve, 22, filling pipe, 23, secondary water-supply pipe, 24, pressure sensor two, 25, temperature sensor two, 26, desuperheat circulation pipe.
Detailed description of the invention
With regard to accompanying drawing 1, one heating heat-exchange unit of the present invention is described in detail below below.
As shown in Figure 1, one heating heat-exchange unit of the present invention is primarily of shell-and-tube heat exchanger 1, plate type heat exchanger 2, circulating pump 3, moisturizing variable frequency pump 4 and switch board 5 form, an import of shell-and-tube heat exchanger 1 is connected with steam pipe 8, and on steam pipe 8, steam temperature-sensing valve 9 is housed, the once outlet of shell-and-tube heat exchanger 1 is connected to serises connecting tube 13 and is connected with an import of plate type heat exchanger 2, serises connecting tube 13 is equipped with electromagnetic shut-off valve 12, serises connecting tube 13 is provided with temperature sensor 1 after electromagnetic shut-off valve 12, the once outlet of plate type heat exchanger 2 is connected with condensed water discharge pipe 14, condensed water discharge pipe 14 is equipped with steam trap 15, the secondary import of plate type heat exchanger 2 is connected with secondary returning water pipe 16 and secondary water-supply pipe 23 respectively with secondary outlet, secondary returning water pipe 16 is equipped with filter 17, secondary returning water pipe 16 is equipped with circulating pump 3 after filter 17, secondary returning water pipe 16 is before circulating pump 3, pressure sensor 1 is provided with after filter 17, secondary returning water pipe 16 is before circulating pump 3, filling pipe 22 and relief tube 18 is also connected to respectively after filter 17, and on filling pipe 22, moisturizing variable frequency pump 4 is housed, relief tube 18 is equipped with pressure release electromagnetic valve 19, secondary returning water pipe 16 is also connected to desuperheat circulation pipe 26 and is connected with the secondary import of described shell-and-tube heat exchanger 1 after circulating pump 3, the secondary outlet of shell-and-tube heat exchanger 1 is connected to desuperheat feed pipe 10 and is connected with described secondary water-supply pipe 23, secondary water-supply pipe 23 is provided with pressure sensor 2 24 and temperature sensor 2 25 after access desuperheat feed pipe 10, and on desuperheat circulation pipe 26, balance regulating valve 21 is housed.Described circulating pump 3, moisturizing variable frequency pump 4, steam temperature-sensing valve 9, temperature sensor 1, electromagnetic shut-off valve 12, pressure release electromagnetic valve 19, pressure sensor 1, pressure sensor 2 24 and temperature sensor 2 25 are connected with switch board 5 wiring respectively, switch board 5 is also connected with the outdoor temperature sensor 7 for detecting outdoor environment temperature disposed in the outdoor, GPRS transceiver module 6 is also equiped with in switch board 5, described GPRS transceiver module 6 mainly carries out real-time radio transmission and reception to relevant data signal, is convenient to realize wireless remote monitering.
Operation principle of the present invention is, first the steam source that shell-and-tube heat exchanger 1 pair of steam pipe 8 is carried carries out heat exchange desuperheat, plate type heat exchanger 2 is accessed again by serises connecting tube 10, simultaneously a part of flow of secondary returning water pipe 16 after circulating pump 3 pressurizes enters shell-and-tube heat exchanger 1 by desuperheat circulation pipe 26 and heats after balance regulating valve 21, and then import secondary water-supply pipe 23 by desuperheat feed pipe 10, the outdoor environment temperature detected according to outdoor temperature sensor 7 is provided secondary water-supply pipe 23 water outlet temperature setting value by switch board 5 system adaptively, then the secondary water-supply pipe 23 water outlet temperature setting value provided according to system relative to temperature sensor 2 25 by steam temperature-sensing valve 9 regulates its aperture automatically, the temperature sensor 2 25 be contained on secondary water-supply pipe 23 detects secondary water-supply pipe 23 leaving water temperature, when the water outlet temperature setting value that secondary water-supply pipe 23 leaving water temperature provides lower than system being detected, steam temperature-sensing valve 9 will tune up its aperture, steam pipe 8 flow is increased, secondary water-supply pipe 23 leaving water temperature increases, otherwise, then turn steam temperature-sensing valve 9 aperture down and reduce steam pipe 8 flow, secondary water-supply pipe 23 leaving water temperature reduces, adjustment like this, in secondary water-supply pipe 23 leaving water temperature is maintained water outlet temperature setting value that system provides, realize the present invention energy-conservation, comfortable heating effect, be contained in balance regulating valve 21 on desuperheat circulation pipe 26 for regulating the flow of desuperheat circulation pipe 26, be tending towards identical with the discharge pressure enabling secondary returning water pipe 16 enter after shell-and-tube heat exchanger 1 and plate type heat exchanger 2, thus ensure that heat exchange of the present invention, circulating effect, the temperature sensor 1 be contained on serises connecting tube 13 detects the heat source temperature that serises connecting tube 13 enters plate type heat exchanger 2, when detecting heat source temperature that serises connecting tube 13 enters plate type heat exchanger 2 to maximum temperature values higher than systemic presupposition, plate type heat exchanger 2 thermal source is closed and cut off to electromagnetic shut-off valve 12 immediately, thus protection plate type heat exchanger 2 is not damaged, guarantee safety and avoid high temperature to threaten, meanwhile, the pressure sensor 1 be contained on secondary returning water pipe 16 detects circulating pump 3 intake pressure, when the pressure of return water steady state value of circulating pump 3 intake pressure lower than systemic presupposition being detected, moisturizing variable frequency pump 4 will automatically start and carry out frequency-changing pressure stabilizing moisturizing relative to the pressure of return water steady state value of pressure sensor 1 foundation systemic presupposition, voltage stabilizing, be stabilized on the pressure of return water steady state value of systemic presupposition to make circulating pump 3 intake pressure, when detecting that circulating pump 3 intake pressure is stabilized in the pressure of return water steady state value of systemic presupposition, and when maintaining 30s ~ 60s, moisturizing variable frequency pump 4 is by shutdown and enter dormancy holding state, so repeatedly, realize voltage stabilizing of the present invention, level pressure and termination of pumping energy-saving effect, when the pressure of return water steady state value of circulating pump 3 intake pressure higher than systemic presupposition being detected, and reach systemic presupposition super-pressure force value and above time, pressure release electromagnetic valve 19 will open sluicing automatically, pressure release, until when circulating pump 3 intake pressure falls back to the pressure of return water steady state value of systemic presupposition, pressure release electromagnetic valve 19 will be closed automatically, when the anhydrous force value of circulating pump 3 intake pressure lower than systemic presupposition being detected, circulating pump 3 is by stoppage protection, when circulating pump 3 intake pressure recovers, and detect circulating pump 3 intake pressure systemic presupposition pressure of return water steady state value and above time, circulating pump 3 automatically starts and reverts to normal operating condition.
Each related temperature signals, pressure signal that described switch board 5 detects according to described outdoor temperature sensor 7, temperature sensor 1, temperature sensor 2 25, pressure sensor 1 and pressure sensor 2 24; respectively Automatic Control and protection are carried out to circulating pump 3, moisturizing variable frequency pump 4, steam temperature-sensing valve 9, electromagnetic shut-off valve 12 and pressure release electromagnetic valve 19; switch board 5 also receives and sends relevant wireless data signal by GPRS transceiver module 6 in GPRS mode simultaneously, realizes the unattended remote wireless monitoring of the present invention and management.

Claims (3)

1. a heating heat-exchange unit is primarily of shell-and-tube heat exchanger, plate type heat exchanger, circulating pump, moisturizing variable frequency pump and switch board composition, an import of shell-and-tube heat exchanger is connected with steam pipe, and steam temperature-sensing valve is housed on steam pipe, it is characterized in that, the once outlet of shell-and-tube heat exchanger is connected to serises connecting tube and is connected with an import of plate type heat exchanger, serises connecting tube is equipped with electromagnetic shut-off valve, serises connecting tube is provided with temperature sensor one after electromagnetic shut-off valve, the secondary import of plate type heat exchanger is connected with secondary returning water pipe and secondary water-supply pipe respectively with secondary outlet, secondary returning water pipe is equipped with filter, secondary returning water pipe is equipped with circulating pump after the filters, secondary returning water pipe is before circulating pump, pressure sensor one is provided with after filter, secondary returning water pipe is also connected to desuperheat circulation pipe and is connected with the secondary import of described shell-and-tube heat exchanger after circulating pump, the secondary outlet of shell-and-tube heat exchanger is connected to desuperheat feed pipe and is connected with described secondary water-supply pipe, secondary water-supply pipe is provided with temperature sensor two after access desuperheat feed pipe, desuperheat circulation pipe is equipped with balance regulating valve.
2. one heating heat-exchange unit according to claim 1, it is characterized in that, secondary returning water pipe is also connected to filling pipe and relief tube respectively before circulating pump, after filter, and moisturizing variable frequency pump is housed on filling pipe, and relief tube is equipped with pressure release electromagnetic valve.
3. one heating heat-exchange unit according to claim 1, it is characterized in that, described switch board is connected with the outdoor temperature sensor for detecting outdoor environment temperature disposed in the outdoor, in switch board, be also equiped with GPRS transceiver module.
CN201410678896.9A 2014-11-24 2014-11-24 Heat exchange unit for heat supply Pending CN104864440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410678896.9A CN104864440A (en) 2014-11-24 2014-11-24 Heat exchange unit for heat supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410678896.9A CN104864440A (en) 2014-11-24 2014-11-24 Heat exchange unit for heat supply

Publications (1)

Publication Number Publication Date
CN104864440A true CN104864440A (en) 2015-08-26

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Application Number Title Priority Date Filing Date
CN201410678896.9A Pending CN104864440A (en) 2014-11-24 2014-11-24 Heat exchange unit for heat supply

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949755A (en) * 2017-04-27 2017-07-14 南通中船机械制造有限公司 The Instant heating type hot-water heating system of ship
CN113669906A (en) * 2021-08-26 2021-11-19 广船国际有限公司 Alkali lye cabinet heating system and boats and ships

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949755A (en) * 2017-04-27 2017-07-14 南通中船机械制造有限公司 The Instant heating type hot-water heating system of ship
CN113669906A (en) * 2021-08-26 2021-11-19 广船国际有限公司 Alkali lye cabinet heating system and boats and ships

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Application publication date: 20150826