CN2884055Y - Main steam jetting device of steam-jetting type cooling water machine - Google Patents
Main steam jetting device of steam-jetting type cooling water machine Download PDFInfo
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- CN2884055Y CN2884055Y CN 200620023975 CN200620023975U CN2884055Y CN 2884055 Y CN2884055 Y CN 2884055Y CN 200620023975 CN200620023975 CN 200620023975 CN 200620023975 U CN200620023975 U CN 200620023975U CN 2884055 Y CN2884055 Y CN 2884055Y
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Abstract
The utility model discloses a main steam injector for steam jet type water chiller according to the patent requirement 1, which is characterized in that an auxiliary nozzle is arranged in a suction chamber, a main and an auxiliary double-cavity steam chamber which are not communicated with each other are arranged between the suction chamber and a main inlet pipe, wherein the main steam chamber is communicated with a main nozzle and the auxiliary steam chamber is communicated with the auxiliary nozzle. An isolation valve is arranged on an auxiliary inlet pipe of an auxiliary inlet chamber connected with the main inlet pipe of the main inlet chamber. When the temperature of the cooling water is higher than the normal value, the auxiliary nozzle is started and the ultimate backpressure value of the cooling water increases 0.0015 to 0.002Mpa, the increased condensing pressure is overcome to guarantee the continuous and steady operation of the steam jet type water chiller.
Description
Technical field
The utility model relates to a kind of main steam injector of steam-sprayed cooling-water machine, particularly relates to a kind of change back pressure main steam injector of steam-sprayed cooling-water machine.
Background technology
At present, known steam-sprayed cooling-water machine be a kind of be the vapour compression refrigerator of power with heat energy, be refrigeration working medium with water, utilize working medium evaporation endothermic process under low pressure to produce cold.Steam-sprayed cooling-water machine structure is evaporimeter, main steam injector, hybrid main condenser, first auxiliary ejector, first auxiliary condenser, second auxiliary ejector, second auxiliary condenser composition.The main steam injector is equivalent to compressor, be by suction chamber, single main burner in the suction chamber, the diffuser formation that is linked in sequence, its suction inlet is connected with the low pressure cold steam (vapor) outlet of evaporimeter, its outlet is connected with the mixed vapour inlet of hybrid main condenser, working steam produces the supersonic speed vapor stream more than 1000～1200m/S in main steam injector nozzle exit, nozzle exit forms vacuum, make and keep the certain vacuum degree in the evaporimeter, after the supersonic speed vapor stream attracts the low pressure cold condensing of refrigeration working medium evaporation generation in the evaporimeter to enter the mixing chamber mixing, diffusion constant pressure through the main steam injector is reduced to condensing pressure, be generally 0.005733Mpa～0.006398Mpa, it promptly is its limit back pressure value, and cooling temperature of circulating water is that the saturated vapour pressure of condensation temperature when being 35 ℃～37 ℃ is 0.005733～0.006398Mpa in the hybrid main condenser, when both force value equated, the main steam injector can be worked.But, at high temperature season, when the cooling water cycle water temperature of hybrid main condenser is higher than normal range (NR), can reach 39 ℃～41 ℃, hybrid main condenser internal pressure reaches 0.007129Mpa～0.007930Mpa, the big 0.001396Mpa～0.001532Mpa of limit back pressure than main steam injector, main steam injector operating mode worsens, and refrigerating capacity descends, and then the phenomenon of pouring in down a chimney that working steam flows backwards and enters evaporimeter takes place, evaporimeter heating, not freezing or freeze is decline and influences work.
The utility model content
The purpose of this utility model is for to address the above problem, can not only under normal cooling temperature of circulating water condition, work and provide a kind of, and can be higher than the steam-sprayed cooling-water machine main steam injector of continous-stable work under the condition of normal temperature at cooling temperature of circulating water.
For achieving the above object, the technical solution that the utility model adopted is finished by following measure: a kind of steam-sprayed cooling-water machine main steam injector has a major and minor air chamber of mutual disconnected two-chamber is set between suction chamber and main steam inlet tube; An auxiliary jet is set in the described suction chamber at least; The major and minor air chamber of described two-chamber is connected with major and minor nozzle respectively; Between described live steam pipe and secondary steam inlet pipe that secondary air chamber is communicated with, establish an isolating valve.When steam-sprayed cooling-water machine main steam spray apparatus limit back pressure certain, cause because of the cooling circulating water temperature rise at high temperature season under the condition of condensing pressure increase, auxiliary jet cooperates main burner to devote oneself to work, increased the critical section area of major and minor nozzle effectively, made the ratio of total critical section area sum of the cross-sectional area of cylindrical mixing chamber and nozzle reduce to 120～140: 1; The limit back pressure value of injector increases by 0.0015～0.002Mpa (absolute pressure), overcomes the condensing pressure of rising, thus realized cool cycles be higher than in coolant-temperature gage under the condition of normal temperature can continous-stable work.
In this was novel, the related auxiliary jet axis and the angle of main burner axis were 2.The working steam that is sprayed simultaneously by major and minor nozzle is mixed into diffuser like this.
In this was novel, the leading portion angle of throat of related main burner and auxiliary jet was 5 times of the back segment angle of flare.
In this was novel, the related main burner and the angle of flare of auxiliary jet were 15 °～20 °; The best angle of flare is 15 °.
In this was novel, the ratio of related main burner throat critical section area and auxiliary jet throat critical surface cross-sectional area sum was 20: 7～20: 9.
In this was novel, related main burner, auxiliary jet were the absolute construction bodies of a split; Or the structure of an integral body.
In this was novel, the ratio of the cylindrical mixing chamber cross-sectional area in the related diffuser and the critical section area of major and minor nozzle was 190-200: 1.
In this was novel, the ratio of the critical section area sum of cylindrical mixing chamber cross-sectional area in the related diffuser and major and minor nozzle reduced to 120～140: 1.
The beneficial effects of the utility model are: have and set up auxiliary jet in suction chamber, be connected the major and minor air chamber of two-chamber with main burner.Therefore, the main steam injector is when cooling temperature of circulating water is higher than normal temperature, start auxiliary jet, the limit is faced the pressure value and is increased to 0.0015～0.002Mpa, overcome the condensing pressure that raises under the corresponding cooling temperature of circulating water, make the normal stable operation of its main steam injector, thereby guaranteed the work of main steam injecting type cooling-water machine continous-stable, do not reduce refrigerating capacity and refrigerating efficiency.
Description of drawings
Fig. 1 is this novel structural representation.
Fig. 2 is the main burner topology view.
Fig. 3 is the auxiliary jet topology view.
Fig. 4 is another structure of major and minor nozzle embodiment view.
The specific embodiment
Below in conjunction with accompanying drawing embodiment, to this novel being described in further detail.
By shown in Fig. 1,2,3 steam-sprayed cooling-water machine main ejector, it comprises by shrinking shape mixing chamber 20, cylindrical mixing chamber 23 and having the diffuser that the discharge chambe 26 of expansion shape outlet(discharge) flange 27 is formed by flange 21,24 and bolt 22,25 lines successively.Be connected with hybrid main condenser mixed vapour inlet by expansion shape outlet(discharge) flange 27.This end that shrinks shape mixing chamber 20 is connected with the flange 13 of suction chamber 12 1 ends by the flange 19 on it.Pipe 10 is connected in the main admission on middle part in described suction chamber 12 is provided with main burner 11 and has connecting plate 7.Produce shake when preventing main burner 11, and in its main admission, on the pipe 10 pipe box 8 is housed the one end is fixed on the connecting plate 7 by high speed vapour.The other end is fixed in the suction chamber 12 by a main burner master locating ring 9 is set.Be 120 ° at the periphery of described main burner 11 and be distributed with that pipe 15 is connected and fixed on the connecting plate 7 in three auxiliary jets 18 and the secondary admission, by nut 14 lockings.The angle of the axis of the axis of described auxiliary jet 18 and main burner 11 is 2 °.At the other end of described suction chamber connecting plate 7 a two-chamber air chamber is installed also, is fixedlyed connected with connecting plate 7 by the flange on the two-chamber air chamber 6.Described two-chamber air chamber is one and is made up of main air chamber 4 and mutual disconnected secondary air chamber 5.This main air chamber 4 is communicated with the interior pipe 10 of the main admission of main burner; Secondary air chamber 5 is communicated with the interior pipe 15 of the admission of auxiliary jet.End at described two-chamber air chamber master air chamber 4 connects a main steam inlet tube 1 connection; This main steam inlet tube 1 is provided with the secondary steam inlet pipe 2 of a branch and is communicated with the secondary air chamber 5 of two-chamber air chamber by the isolating valve 3 that is provided with.Consider that equally auxiliary jet 18 is in cantilever position, for reduce the high speed steam flow by the time produce shake, and in secondary admission, on the pipe 15 secondary locating ring 17 is housed and supports.Have the suction inlet 16 that is connected with the cool steam (vapor) outlet of evaporimeter low pressure on the described suction chamber 12.
In this was novel, the ratio of the critical section area sum of cylindrical mixing chamber 23 cross-sectional areas and main burner 11 and 18 was 190～200: 1.
In this was novel, the ratio of cylindrical mixing chamber 23 cross-sectional areas in the diffuser and the critical section area sum of major and minor nozzle 11 and 18 reduced to 120～140: 1.
In this was novel, angle of throat a, a of the preceding contraction section of described main burner 11 and auxiliary jet 18 was angle of flare b, b ' 5 times of back expansion segment; The angle of flare b of main burner 11 and auxiliary jet 18, b ' are 15 °～20 °; Best angle of flare b, b ' are 15 °.
In this was novel, the ratio of described main burner 11 throat's critical section areas and auxiliary jet 18 throat's critical section area sums was 20: 7～20: 9.
The limit back of the body of the main ejector that this is novel is increased to 0.0015～0.002Mpa (absolute pressure) in value, overcome the condensing pressure of rising, not only under normal cooling temperature of circulating water condition, working, and can be higher than stable work under the condition bar of normal temperature at cooling temperature of circulating water.
Fig. 4 has provided another example structure of major and minor nozzle.It has has done corresponding improvement on the basis of Fig. 1 structure.Promptly on the main body of an integral body, be provided with in the main burner 11 of global formation and the main admission and manage 10, and pipe 15 constitutes in the auxiliary jet 18 of global formation and the secondary admission.The mounting means of this structure is identical with Fig. 1.
The major and minor nozzle 11 and 18 of global formation can omit main locating ring 9 and the secondary locating ring 17 that is disposed respectively like this in above-mentioned.
Under normal cooling temperature of circulating water condition, only drop into main burner 11 work, this moment, the ratio of critical surface area of cylindrical mixing chamber 23 cross-sectional areas and main burner 11 was respectively 190-200: 1 can be stable work.When cooling temperature of circulating water is higher than normal value, hybrid main condenser internal pressure is during greater than the limit back pressure of main ejector, the operating mode of main ejector worsens, refrigerating capacity descends significantly, pour in down a chimney, open isolating valve 2 this moment immediately, supply with two-chamber air chamber working steam, auxiliary jet 18 is devoted oneself to work, make cylindrical mixing chamber 23 cross-sectional areas and master, the ratio of auxiliary jet 11 and 18 critical section area sum reduces to 120-140: 1, the limit back pressure value of this main ejector is increased to 0.002-0.0025Mpa (absolute pressure), to adapt to the condensing pressure operating mode of variation, continues stable work.
Claims (7)
1, a kind of steam-sprayed cooling-water machine main steam injector comprises the diffuser that suction chamber and one end connect, and the other end connects main steam inlet tube; Be provided with main burner in this suction chamber, it is characterized in that, a major and minor air chamber of mutual disconnected two-chamber (4,5) is set between described suction chamber (12) and main steam inlet tube (1); An auxiliary jet (18) is set in the described suction chamber (12) at least; The major and minor air chamber of described two-chamber (4,5) is connected with major and minor nozzle (11,18) respectively; Between described main steam inlet tube (1) and secondary inlet pipe (3) that secondary air chamber (5) is communicated with, establish an isolating valve (2).
2, by the described steam-sprayed cooling-water machine main steam injector of claim 1, it is characterized in that the angle of described auxiliary jet (18) axis and main burner (11) axis is 2 °.
3, by the described steam-sprayed cooling-water machine main steam injector of claim 1, it is characterized in that the angle of flare of described major and minor nozzle (11,18) is 15 °～20 °; The best angle of flare is 15 °
4, by the described steam-sprayed cooling-water machine main steam injector of claim 1, it is characterized in that the ratio of described main burner (11) throat's critical section area and auxiliary jet (18) throat critical section area sum is 20: 7～20: 9.
5, by the described steam-sprayed cooling-water machine main steam injector of claim 1, it is characterized in that described major and minor nozzle (11,18) is the absolute construction body of a split; Or the structure of an integral body.
6, by the described steam-sprayed cooling-water machine main steam injector of claim 1, it is characterized in that the ratio of cylindrical mixing chamber (23) cross-sectional area in the described diffuser and the critical section area of main burner (11) is 190～200: 1.
7, by the described steam-sprayed cooling-water machine main steam injector of claim 1, it is characterized in that the ratio of the critical section area sum of cylindrical mixing chamber (23) cross-sectional area in the described diffuser and major and minor nozzle (11,18) reduces to 120-140: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023975 CN2884055Y (en) | 2006-03-29 | 2006-03-29 | Main steam jetting device of steam-jetting type cooling water machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023975 CN2884055Y (en) | 2006-03-29 | 2006-03-29 | Main steam jetting device of steam-jetting type cooling water machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884055Y true CN2884055Y (en) | 2007-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620023975 Expired - Fee Related CN2884055Y (en) | 2006-03-29 | 2006-03-29 | Main steam jetting device of steam-jetting type cooling water machine |
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| CN (1) | CN2884055Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102144131B (en) * | 2008-09-08 | 2014-03-05 | 西门子能源公司 | Method and system for controlling fuel to dual stage nozzle |
-
2006
- 2006-03-29 CN CN 200620023975 patent/CN2884055Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102144131B (en) * | 2008-09-08 | 2014-03-05 | 西门子能源公司 | Method and system for controlling fuel to dual stage nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070328 Termination date: 20120329 |