CN217873161U - Ultrahigh-temperature gas vacuum-pumping system - Google Patents

Abstract

The utility model relates to an ultra-high temperature gas evacuation system belongs to vacuum technical field. The utility model provides a cooling water inlet line and cooling water outlet pipe way all are connected with the cooler, the cooling water regulating valve group sets up on cooling water inlet pipe way, the gas flow advances the pipe and is connected with the one end of cooler, the other end and the main vacuum pipe connection of cooler, main vacuum pipe is connected with first order steam injector, first order steam injector is connected with the elbow pipe, the elbow pipe is connected with first order spray condenser, first order spray condenser is connected with a cooling water log pipe and second level steam injector respectively, second level steam injector is connected with No. two elbow pipes, no. two elbow pipes are connected with second level spray condenser, second level spray condenser is connected with No. two cooling water log pipes and third level steam injector respectively, third level steam injector is connected with No. three elbow pipes.

Description

Ultrahigh-temperature gas vacuum-pumping system

Technical Field

The utility model relates to an ultra-high temperature gas evacuation system belongs to vacuum technical field.

Background

In some engine vacuum environment simulation experiment platforms, the temperature of tail gas exhausted by an engine is generally as high as 1000-3000K, a general vacuum-pumping system cannot directly exhaust high-temperature airflow, and the vacuum-pumping system combining ultra-high-temperature gas cooling equipment and a vacuum-pumping device needs to be provided to ensure the vacuum environment of a simulation experiment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a gaseous vacuum pumping system of ultra-high temperature that structural design is reasonable for solve current vacuum pumping system under the ultra-high temperature gas incoming flow condition, with the ultra-high temperature after-stream cooling and through vacuum pumping system with gas outgoing.

The utility model provides a technical scheme that above-mentioned problem adopted is: this gaseous vacuum pumping system of ultra-high temperature, including cooling water regulating valve group, cooler cooling water inlet pipe way, gas flow inlet pipe, cooler cooling water outlet pipe way, main vacuum pipeline, elbow pipe, a cooling water log pipe, no. two elbow pipes, no. two cooling water log pipes, no. three elbow pipes, no. three cooling water log pipes, gas discharge pipe, power steam pipeline and cooling water inlet pipe way, its structural feature lies in: still include desuperheater, first order steam sprayer, first order spray condenser, second level steam sprayer, second level spray condenser, third level steam sprayer and third level spray condenser, desuperheater cooling water inlet pipe and desuperheater cooling water outlet pipe all are connected with the desuperheater, cooling water governing valve group sets up on desuperheater cooling water inlet pipe, the gas flow admission pipe is connected with the one end of desuperheater, the other end and the main vacuum pipe connection of desuperheater, main vacuum pipe is connected with first order steam sprayer, first level steam sprayer is connected with the elbow pipe, the elbow pipe is connected with first level spray condenser, first level spray condenser is connected with a cooling water inlet pipe and second level steam sprayer respectively, second level steam sprayer is connected with No. two elbow pipes, no. two elbow pipes are connected with second level spray condenser, second level spray condenser is connected with No. two cooling water inlet pipe and third level steam sprayer respectively, third level spray condenser is connected with third level spray steam sprayer and third level spray condenser and third level spray steam sprayer respectively and third level spray steam sprayer and third level steam sprayer are connected with third level steam sprayer and third level spray steam sprayer. The cooling water regulating valve group is linked with a temperature transmitter signal of the main vacuum pipeline, a temperature point is set, when the temperature transmitter feeds back the temperature of the exhaust gas of the cooler to be higher than the temperature, the cooling water regulating valve group is automatically opened to be large, and when the exhaust temperature of the cooler is lower than the temperature, the cooling water regulating valve group is automatically closed to be small, so that the online automatic water quantity regulation is realized, and the cooling function is reliable.

Furthermore, the device also comprises an expansion joint, a main vacuum butterfly valve, a temperature transmitter and a pressure transmitter, wherein the expansion joint, the main vacuum butterfly valve, the temperature transmitter and the pressure transmitter are sequentially arranged on the main vacuum pipeline. The main vacuum pipeline is provided with an expansion joint, so that the requirement that the steel pipeline generates thermal expansion under the action of ultra-high temperature airflow is met, pipeline thermal compensation is provided, the main vacuum pipeline is provided with 1 pressure transmitter, the vacuum degree of the vacuum-pumping system can be monitored, and the main vacuum butterfly valve is arranged on the main vacuum pipeline and can be used for cold debugging of the vacuum-pumping system before a system hot test.

Further, the first, second, and third stage steam injectors each include a nozzle assembly and an injector body, the nozzle assembly disposed on the injector body.

Further, the nozzle assembly comprises a nozzle connecting pipe and a nozzle, the injector body comprises an injector barrel, an injector diffuser pipe and an injector connecting pipe, the nozzle is arranged on the nozzle connecting pipe, the nozzle connecting pipe is arranged on the injector barrel, the nozzle is located in the injector barrel, the injector barrel is respectively connected with the injector diffuser pipe and the injector connecting pipe, and a pressure gauge interface is arranged on the injector barrel.

Furthermore, a contraction section, a throat section and a diffusion section are sequentially arranged in the diffuser of the ejector, and shoulder rings are arranged between the contraction section and the throat section and between the throat section and the diffusion section.

Further, first order spray condenser, second grade spray condenser and third level spray condenser all include the spray condenser barrel, spray the intake pipe, spray the outlet duct, spray the inlet tube, spray the outlet pipe, spray the taper pipe and shower head, spray the intake pipe and spray the outlet pipe and all set up the lower part at the spray condenser barrel, spray the outlet duct and spray the inlet tube and all set up the upper portion at the spray condenser barrel, the spray taper pipe with spray the water piping connection, the shower head is connected with the spray taper pipe, and the shower head is located the spray condenser barrel.

Furthermore, the first-stage spray condenser, the second-stage spray condenser and the third-stage spray condenser further comprise a spray base, a water baffle ring and an overflow plate, the spray condenser barrel is arranged on the spray base, the water baffle is matched with the spray head, the water baffle ring is arranged in the middle of the spray condenser barrel, and the overflow plate is arranged on the water baffle ring. The water deflector can prevent water sprayed by the spray header from entering the spray outlet pipe, the water sprayed by the spray header forms water drops, and the water drops on the spray condenser cylinder are gathered on the water deflector and overflow through the overflow plate to form a water film.

Furthermore, the cooler comprises a shell, an air inlet pipe, an air outlet pipe, a cooling liquid inlet pipe, a cooling liquid outlet pipe, a jacket, an interlayer, a first pipe bundle, a second pipe bundle and pipe bundle partition plates, wherein the air inlet pipe and the air outlet pipe are respectively arranged at two ends of the shell, the first pipe bundle and the second pipe bundle are arranged in the shell at intervals, the pipe bundle partition plates are arranged at two sides of the first pipe bundle and the second pipe bundle, the jacket is arranged at the end part of the shell and forms the interlayer with the end part of the shell, the cooling liquid inlet pipe and the cooling liquid outlet pipe are communicated with the interlayer, the cooling liquid inlet pipe is arranged at the lower end of the jacket, and the cooling liquid outlet pipe is arranged at the upper end of the jacket. Set up the clamp cover at the tip of casing to form the intermediate layer, accessible coolant liquid advances the pipe and pours into the coolant liquid into the intermediate layer into, the coolant liquid is flowing through the coolant liquid exit tube, can realize the cooling to the casing, avoids the initial temperature that ultra-high temperature gas entered into the cooler too high, damages the cooler.

Further, no. one the tube bank includes a tube bank chamber, a baffle, a cooling intake antrum, a cooling play water cavity, a cooling inlet tube, a cooling outlet pipe, a heat exchange tube and gaseous piece of blocking, a tube bank chamber and a heat exchange tube all set up in the casing, a baffle sets up in a tube bank intracavity, and separates a tube bank chamber for a cooling intake antrum and a cooling play water cavity, the both ends of a heat exchange tube communicate with a cooling intake antrum and a cooling play water cavity respectively, a cooling inlet tube and a cooling outlet pipe all set up in the bottom in a tube bank chamber, and a cooling inlet tube and a cooling outlet pipe communicate with a cooling intake antrum and a cooling play water cavity respectively, gaseous piece sets up at the top in a tube bank chamber, and gaseous piece of blocking is located the axis department of a heat exchange tube and a heat exchange tube. When the ultra-high temperature gas flows in the cooler, the gas can be blocked by the arranged gas blocking piece so as to increase the contact area between the gas and the first heat exchange tube and the second heat exchange tube and improve the cooling efficiency,

further, no. two tube banks include No. two tube bank chambeies, no. two baffles, no. two cooling intake antrums, no. two cooling water outlet chambeies, no. two cooling inlet tubes, no. two cooling outlet pipes and No. two heat exchange tubes, no. two tube bank chambeies and No. two heat exchange tubes all set up in the casing, no. two baffles set up in No. two tube bank intracavity, and separate No. two tube bank chambeies for No. two cooling intake antrums and No. two cooling water outlet chambeies, the both ends of No. two heat exchange tubes communicate with No. two cooling intake antrums and No. two cooling water outlet chambeies respectively, no. two cooling inlet tubes and No. two cooling outlet pipes all set up in the bottom in No. two tube bank chambeies, and No. two cooling inlet tubes and No. two cooling outlet pipes communicate with No. two cooling intake antrums and No. two cooling water outlet chambeies respectively.

Compared with the prior art, the utility model has the advantages of it is following: adopt tube bank formula desuperheater + vapour sprayer compound mode to carry out the evacuation, adopt tube bank formula desuperheater to carry out the big difference in temperature cooling to high temperature gas incoming flow in short stroke earlier, can be from 1000K ~ 3000K cooling to below 600K, gas after the cooling gets into the evacuation pump system and discharges after the pressure boost.

The shell is arranged on the saddle-type support, the equipment is considered to be expanded when heated, and the cooler adopts a sliding support, so that the design is reasonable and reliable; the expansion joint is arranged on the main vacuum pipeline, so that the thermal compensation of the pipeline is considered, and the design is reliable; the cooler is provided with a cooling water regulating valve which is interlocked with a temperature transmitter behind the cooler, so that the on-line automatic water quantity regulation is realized, and the cooling function is reliable.

Drawings

Fig. 1 is a schematic connection diagram of an ultra-high temperature gas evacuation system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the first stage steam injector, the second stage steam injector, and the third stage steam injector according to an embodiment of the present invention.

Fig. 3 is the structural schematic diagram of the first stage spray condenser, the second stage spray condenser and the third stage spray condenser of the embodiment of the present invention.

Fig. 4 is a schematic front view of the cooler according to the embodiment of the present invention.

Fig. 5 is a schematic front view of a first tube bundle according to an embodiment of the present invention.

Fig. 6 is a left side view schematic diagram of a first tube bundle according to an embodiment of the present invention.

Fig. 7 is a schematic front view of a second tube bundle according to an embodiment of the present invention.

Fig. 8 is a left side view schematic diagram of a second tube bundle according to an embodiment of the present invention.

In the figure: a cooler 1, a cooling water regulating valve group 2, a cooler cooling water inlet pipeline 3, a gas inflow pipe 4, a cooler cooling water outlet pipeline 5, a main vacuum pipeline 6 an expansion joint 7, a main vacuum butterfly valve 8, a temperature transmitter 9, a pressure transmitter 10, a first-stage steam injector 11, a first elbow pipe 12, a first-stage spray condenser 13 a first cooling water discharge pipe 14, a second stage steam ejector 15, a second elbow pipe 16, a second stage spray condenser 17, a second cooling water discharge pipe 18, a third stage steam ejector 19 a third elbow pipe 20, a third stage spray condenser 21, a third cooling water discharge pipe 22, a gas discharge pipe 23, a power steam pipeline 24, a cooling water inlet pipeline 25,

A nozzle assembly A1, an injector body A2,

A nozzle adapter A11, a nozzle A12,

An injector cylinder A21, an injector diffuser pipe A22, an injector connecting pipe A23, a contraction section A24, a throat section A25, a diffuser section A26, a pressure gauge interface A27, a shoulder ring A28,

A spray base B1, a spray condenser cylinder B2, a spray air inlet pipe B3, a spray air outlet pipe B4, a spray water inlet pipe B5 a spraying water outlet pipe B6, a spraying taper pipe B7, a spraying head B8, a water baffle B9, a water baffle ring B10, an overflow plate B11,

A shell C1, an air inlet pipe C2, an air outlet pipe C3, a cooling liquid inlet pipe C4, a cooling liquid outlet pipe C5, a jacket C6, an interlayer C7, a first pipe bundle C8, a second pipe bundle C9, a pipe bundle partition plate C10,

A first tube bundle cavity C81, a first partition plate C82, a first cooling water inlet cavity C83, a first cooling water outlet cavity C84, a first cooling water inlet pipe C85, a first cooling water outlet pipe C86, a first heat exchange pipe C87, a gas barrier C88, a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger,

A second tube bundle cavity C91, a second partition plate C92, a second cooling water inlet cavity C93, a second cooling water outlet cavity C94, a second cooling water inlet tube C95, a second cooling water outlet tube C96 and a second heat exchange tube C97.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Examples are given.

Referring to fig. 1 to 8, it should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essence, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, in the present specification, if there are terms such as "upper", "lower", "left", "right", "middle" and "one", they are used for clarity of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered as the scope of the present invention without substantial changes in the technical content.

The ultra-high temperature gas vacuumizing system in the embodiment comprises a cooler 1, a cooling water adjusting valve group 2, a cooler cooling water inlet pipeline 3, a gas flow inlet pipe 4, a cooler cooling water outlet pipeline 5, a main vacuum pipeline 6, an expansion joint 7, a main vacuum butterfly valve 8, a temperature transmitter 9, a pressure transmitter 10, a first-stage steam ejector 11, a first bent connecting pipe 12, a first-stage spray condenser 13, a first-stage cooling water discharge pipe 14, a second-stage steam ejector 15, a second bent connecting pipe 16, a second-stage spray condenser 17, a second-stage cooling water discharge pipe 18, a third-stage steam ejector 19, a third bent connecting pipe 20, a third-stage spray condenser 21, a third-stage cooling water discharge pipe 22, a gas discharge pipe 23, a power steam pipeline 24 and a cooling water inlet pipeline 25.

In the embodiment, a cooler cooling water inlet pipeline 3 is connected with a first cooling water inlet pipe C85 and a second cooling water inlet pipe C95 in a cooler 1, a cooler cooling water outlet pipeline 5 is connected with a first cooling water outlet pipe C86 and a second cooling water outlet pipe C96 in the cooler 1, a cooling water regulating valve group 2 is arranged on the cooler cooling water inlet pipeline 3, a gas inflow pipe 4 is connected with a gas inlet pipe C2 in the cooler 1, a gas outlet pipe C3 in the cooler 1 is connected with a main vacuum pipeline 6, an expansion joint 7, a main vacuum butterfly valve 8, a temperature transmitter 9 and a pressure transmitter 10 are sequentially arranged on the main vacuum pipeline 6, the main vacuum pipeline 6 is connected with an ejector connecting pipe A23 in a first-stage steam ejector 11, an ejector connecting pipe A22 in the first-stage steam ejector 11 is connected with a first bent connecting pipe 12, the first bent connecting pipe 12 is connected with a spraying gas inlet pipe B3 in a first-stage spraying condenser 13, a spray water outlet pipe B6 and a spray air outlet pipe B4 in the first-stage spray condenser 13 are respectively connected with a first cooling water discharge pipe 14 and an injector connecting pipe A23 in a second-stage steam injector 15, an injector diffuser pipe A22 in the second-stage steam injector 15 is connected with a second elbow pipe 16, the second elbow pipe 16 is connected with a spray air inlet pipe B3 in the second-stage spray condenser 17, a spray water outlet pipe B6 and a spray air outlet pipe B4 in the second-stage spray condenser 17 are respectively connected with a second cooling water discharge pipe 18 and an injector connecting pipe A23 in a third-stage steam injector 19, an injector diffuser pipe A22 in the third-stage steam injector 19 is connected with a third elbow pipe 20, the third elbow pipe 20 is connected with a spray air inlet pipe B3 in the third-stage spray condenser 21, a spray water outlet pipe B6 and a spray air outlet pipe B4 in the third-stage spray condenser 21 are respectively connected with a third cooling water discharge pipe 22 and a gas outlet pipe 23, the power steam pipeline 24 is respectively connected with a nozzle connecting pipe A11 in the first-stage steam ejector 11, a nozzle connecting pipe A11 in the second-stage steam ejector 15 and a nozzle connecting pipe A11 in the third-stage steam ejector 19, and the cooling water inlet pipeline 25 is respectively connected with a spray water inlet pipe B5 in the first-stage spray condenser 13, a spray water inlet pipe B5 in the second-stage spray condenser 17 and a spray water inlet pipe B5 in the third-stage spray condenser 21.

The first-stage steam injector 11, the second-stage steam injector 15, and the third-stage steam injector 19 in the present embodiment each include a nozzle assembly A1 and an injector body A2, the nozzle assembly A1 is provided on the injector body A2, the nozzle assembly A1 includes a nozzle connection pipe a11 and a nozzle a12, and the injector body A2 includes an injector barrel a21, an injector diffuser pipe a22, and an injector connection pipe a23.

The nozzle A12 in this embodiment is arranged on the nozzle connection pipe A11, the nozzle connection pipe A11 is arranged on the injector cylinder A21, the nozzle A12 is located in the injector cylinder A21, the injector cylinder A21 is respectively connected with the injector diffuser pipe A22 and the injector connection pipe A23, the injector cylinder A21 is provided with a pressure gauge interface A27, the injector diffuser pipe A22 is internally provided with a contraction section A24, a throat section A25 and a diffuser section A26 in sequence, and shoulder rings A28 are arranged between the contraction section A24 and the throat section A25 and between the throat section A25 and the diffuser section A26.

The first-stage spray condenser 13, the second-stage spray condenser 17 and the third-stage spray condenser 21 in the embodiment all comprise a spray base B1, a spray condenser cylinder B2, a spray air inlet pipe B3, a spray air outlet pipe B4, a spray water inlet pipe B5, a spray water outlet pipe B6, a spray taper pipe B7, a spray head B8, a water baffle B9, a water baffle B10 and an overflow plate B11, the spray condenser cylinder B2 is arranged on the spray base B1, and the water baffle B9 is matched with the spray head B8.

The spray air inlet pipe B3 and the spray water outlet pipe B6 in the embodiment are both arranged at the lower part of the spray condenser barrel B2, the spray air outlet pipe B4 and the spray water inlet pipe B5 are both arranged at the upper part of the spray condenser barrel B2, the spray taper pipe B7 is connected with the spray water inlet pipe B5, the spray head B8 is connected with the spray taper pipe B7, the spray head B8 is positioned in the spray condenser barrel B2, the water retaining ring B10 is arranged at the middle part of the spray condenser barrel B2, and the overflow plate B11 is arranged on the water retaining ring B10.

Cooler 1 in this embodiment includes casing C1, intake pipe C2, outlet duct C3, the coolant liquid advances pipe C4, coolant liquid exit tube C5, press from both sides cover C6, intermediate layer C7, no. one tube bank C8, no. two tube bank C9 and tube bank baffle C10, intake pipe C2 and outlet duct C3 set up respectively at casing C1's both ends, no. one tube bank C8 and No. two tube bank C9 intervals set up in casing C1, the both sides of No. one tube bank C8 and No. two tube bank C9 all are provided with tube bank baffle C10, press from both sides the cover C6 and set up the tip at casing C1, and form intermediate layer C7 between the tip with casing C1, the coolant liquid advances pipe C4 and coolant liquid exit tube C5 and all communicates with intermediate layer C7, the coolant liquid advances the lower extreme that pipe C4 set up at clamp cover C6, coolant liquid exit tube C5 sets up the upper end at casing C6.

In this embodiment, a tube bundle C8 includes a tube bundle cavity C81, a partition C82, a cooling water inlet cavity C83, a cooling water outlet cavity C84, a cooling water inlet tube C85, a cooling water outlet tube C86, a heat exchange tube C87 and a gas barrier C88, the tube bundle cavity C81 and the heat exchange tube C87 are both disposed in the housing C1, the partition C82 is disposed in the tube bundle cavity C81 and divides the tube bundle cavity C81 into the cooling water inlet cavity C83 and the cooling water outlet cavity C84, both ends of the heat exchange tube C87 are respectively communicated with the cooling water inlet cavity C83 and the cooling water outlet cavity C84, the cooling water inlet tube C85 and the cooling water outlet tube C86 are both disposed at the bottom of the tube bundle cavity C81, the cooling water inlet tube C85 and the cooling water outlet tube C86 are respectively communicated with the cooling water inlet cavity C83 and the cooling water outlet cavity C84, the gas barrier C88 is disposed at the top of the tube bundle cavity C81, and the gas barrier C87 is located at the axis of the heat exchange tube C87.

No. two tube bundles C9 in this embodiment include No. two tube bundle cavity C91, no. two baffle C92, no. two cooling intake cavities C93, no. two cooling water outlet cavities C94, no. two cooling water inlet pipes C95, no. two cooling water outlet pipes C96 and No. two heat exchange pipes C97, no. two tube bundle cavity C91 and No. two heat exchange pipes C97 all set up in casing C1, no. two baffle C92 sets up in No. two tube bundle cavity C91, and divide No. two tube bundle cavity C91 into No. two cooling intake cavities C93 and No. two cooling water outlet cavities C94, no. two ends of No. two heat exchange pipes C97 communicate with No. two cooling intake cavities C93 and No. two cooling water outlet cavities C94 respectively, no. two cooling water inlet pipes C95 and No. two cooling water outlet pipes C96 all set up the bottom of No. two tube bundle cavity C91, and No. two cooling water inlet pipes C95 and No. two cooling water outlet pipes C96 communicate with No. two cooling intake cavities C93 and No. two cooling water outlet cavities C94 respectively.

Specifically speaking, when the ultra-high temperature gas vacuum-pumping system works, ultra-high temperature gas of 1000K-3000K flows into the pipe 4 from the gas, and enters the cooler 1 through the gas inlet pipe C2 to be cooled to a temperature below 600K, and the cooled gas enters the vacuum-pumping system through the main vacuum pipeline 6 and the gas outlet pipe C3 to be pressurized and exhausted.

The main vacuum pipeline 6 is connected with the first-stage steam ejector 11, after first-stage pressurization, the gas is mixed with power steam and then discharged into the first-stage spray condenser 13, condensable gas is condensed and cooled in the first-stage spray condenser 13, the gas is discharged from a spray gas outlet pipe B4 of the first-stage spray condenser 13 and enters the second-stage steam ejector 15, after second-stage pressurization, the gas is mixed with the power steam and then discharged into the second-stage spray condenser 17, the condensable gas is condensed and cooled in the second-stage spray condenser 17, the gas is discharged from a spray gas outlet pipe B4 of the second-stage spray condenser 17 and enters the third-stage steam ejector 19, after third-stage pressurization, the gas is mixed with the power steam and then discharged into the third-stage spray condenser 21, the condensable gas is condensed and cooled in the third-stage spray condenser 21, the gas is discharged from a spray gas outlet pipe B4 of the third-stage spray condenser 21 and enters a gas discharge pipe 23, temperature and pressurization are completed, and the vacuum environment of the simulation test platform is ensured.

The cooler 1 is provided with a set of cooler cooling water inlet pipeline 3, the cooler cooling water inlet pipeline 3 is provided with 1 set of cooling water regulating valve group 2, the cooling water regulating valve group 2 and a temperature transmitter 9 arranged on a main vacuum pipeline 6 are controlled in an interlocking manner, the opening degree of the cooling water regulating valve group 2 is regulated according to the air flow temperature fed back by the temperature transmitter 9, and automatic regulation of cooling water is realized; the cooler 1 is provided with a set of cooler cooling water outlet pipeline 5, and cooling water after heat exchange is discharged from the cooler cooling water outlet pipeline 5 to form cooling water flowing circulation.

The power steam pipeline 24 respectively enters the first-stage steam ejector 11, the second-stage steam ejector 15 and the third-stage steam ejector 19, is mixed with injected air flow entering the steam ejectors after passing through the steam ejectors, and mixed gas enters the spray condensers to be condensed and cooled secondarily, and is finally discharged from a spray gas outlet pipe B4 of the spray condenser at the last stage through a gas discharge pipe 23.

Through the adoption of the method, the purpose that the ultra-high temperature gas reaching 1000K-3000K is cooled to be below 600K and then enters the vacuumizing system for pressurizing and exhausting, and the vacuum environment required by a simulation test platform is met is achieved.

When the ultra-high temperature gas is cooled in the cooler 1, the cooling water passes through the cooler cooling water inlet pipeline 3 and enters the first cooling water inlet cavity C83 and the second cooling water inlet cavity C93 through the first cooling water inlet pipe C85 and the second cooling water inlet pipe C95 respectively, and then enters the first heat exchange pipe C87 and the second heat exchange pipe C97 for heat exchange, the cooling water enters the first cooling water outlet cavity C84 and the second cooling water outlet cavity C94, and enters the cooler cooling water outlet pipeline 5 through the first cooling water outlet pipe C86 and the second cooling water outlet pipe C96, so as to realize cooling of the ultra-high temperature gas, when the ultra-high temperature gas flows in the cooler 1, the gas can be blocked by the arranged gas blocking piece C88 so as to increase the contact area between the gas and the first heat exchange pipe C87 and the second heat exchange pipe C97, so as to improve the cooling efficiency, the end part of the shell C1 is provided with the jacket C6, an interlayer C7 is formed, the cooling liquid can be injected into the interlayer C7 through the cooling liquid inlet pipe C4, the cooling liquid can flow out, the cooling liquid can realize outflow of the cooling gas, and the damage to the original cooling shell C1 can be avoided, and the cooling shell can be damaged after the temperature of the ultra-high temperature gas cooler 1.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above contents described in the present specification are merely illustrative of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The utility model provides an ultrahigh temperature gas vacuum pumping system, including cooling water regulating valve group (2), cooler cooling water inlet pipe way (3), gas flow admission pipe (4), cooler cooling water outlet pipe way (5), main vacuum pipe (6), elbow pipe (12), a cooling water discharge pipe (14), no. two elbow pipes (16), no. two cooling water discharge pipes (18), no. three elbow pipes (20), no. three cooling water discharge pipes (22), gas discharge pipe (23), power steam pipeline (24) and cooling water inlet pipe way (25), its characterized in that: still include desuperheater (1), first order steam jet ware (11), first order spray condenser (13), second level steam jet ware (15), second level spray condenser (17), third level steam jet ware (19) and third level spray condenser (21), desuperheater cooling water inlet pipe (3) and desuperheater cooling water outlet pipe way (5) all are connected with desuperheater (1), cooling water governing valve group (2) set up on desuperheater cooling water inlet pipe way (3), gaseous stream admission pipe (4) are connected with the one end of desuperheater (1), the other end and the main vacuum pipe (6) of desuperheater (1) are connected, main vacuum pipe (6) are connected with first order steam jet ware (11), first order steam jet ware (11) are connected with curved takeover (12) No. one, curved takeover (12) are connected with first order spray condenser (13), first order spray condenser (13) are connected with cooling water discharge pipe (14) and second level steam jet ware (15) respectively, second level spray condenser (16) are connected with curved takeover (17) and second level spray condenser (16) and second level spray condenser (17) are connected, third level steam ejector (19) is connected with No. three elbow pipes (20), no. three elbow pipes (20) spray condenser (21) with the third level and are connected, third level spray condenser (21) and be connected with No. three cooling water exhaust pipe (22) and gas exhaust pipe (23) respectively, power steam pipeline (24) are connected with first order steam ejector (11), second level steam ejector (15) and third level steam ejector (19) respectively, cooling water inlet pipe (25) spray condenser (13), second level spray condenser (17) and third level respectively and spray condenser (21) and be connected.

2. The ultra-high temperature gas evacuation system of claim 1, wherein: still include expansion joint (7), main vacuum butterfly valve (8), temperature transmitter (9) and pressure transmitter (10), expansion joint (7), main vacuum butterfly valve (8), temperature transmitter (9) and pressure transmitter (10) set gradually on main vacuum pipe (6).

3. The ultra-high temperature gas evacuation system of claim 1, wherein: the first stage steam injector (11), the second stage steam injector (15) and the third stage steam injector (19) each comprise a nozzle assembly (A1) and an injector body (A2), the nozzle assembly (A1) being disposed on the injector body (A2).

4. The ultra-high temperature gas evacuation system of claim 3, wherein: the nozzle assembly (A1) comprises a nozzle connecting pipe (A11) and a nozzle (A12), the ejector body (A2) comprises an ejector cylinder (A21), an ejector diffuser pipe (A22) and an ejector connecting pipe (A23), the nozzle (A12) is arranged on the nozzle connecting pipe (A11), the nozzle connecting pipe (A11) is arranged on the ejector cylinder (A21), the nozzle (A12) is located in the ejector cylinder (A21), the ejector cylinder (A21) is respectively connected with the ejector diffuser pipe (A22) and the ejector connecting pipe (A23), and a pressure gauge interface (A27) is arranged on the ejector cylinder (A21).

5. The ultra-high temperature gas evacuation system of claim 4, wherein: the ejector diffuser pipe (A22) is internally provided with a contraction section (A24), a throat section (A25) and a diffuser section (A26) in sequence, and shoulder rings (A28) are arranged between the contraction section (A24) and the throat section (A25) and between the throat section (A25) and the diffuser section (A26).

6. The ultra-high temperature gas evacuation system of claim 1, wherein: first order spray condenser (13), second level spray condenser (17) and third level spray condenser (21) and all include spray condenser barrel (B2), spray intake pipe (B3), spray outlet duct (B4), spray inlet tube (B5), spray outlet pipe (B6), spray taper pipe (B7) and shower head (B8), spray intake pipe (B3) and spray outlet pipe (B6) and all set up the lower part at spray condenser barrel (B2), spray outlet duct (B4) and spray inlet tube (B5) and all set up the upper portion at spray condenser barrel (B2), spray taper pipe (B7) with spray inlet tube (B5) and be connected, shower head (B8) are connected with spray taper pipe (B7), and shower head (B8) is located spray condenser barrel (B2).

7. The ultra-high temperature gas evacuation system of claim 6, wherein: the first-level spray condenser (13), the second-level spray condenser (17) and the third-level spray condenser (21) further comprise a spray base (B1), a water baffle (B9), a water baffle ring (B10) and an overflow plate (B11), the spray condenser barrel (B2) is arranged on the spray base (B1), the water baffle plate (B9) is matched with a spray head (B8), the water baffle ring (B10) is arranged in the middle of the spray condenser barrel (B2), and the overflow plate (B11) is arranged on the water baffle ring (B10).

8. The ultra-high temperature gas evacuation system of claim 1, wherein: the cooler (1) comprises a shell (C1), an air inlet pipe (C2), an air outlet pipe (C3), a cooling liquid inlet pipe (C4), a cooling liquid outlet pipe (C5), a jacket (C6), an interlayer (C7), a first pipe bundle (C8), a second pipe bundle (C9) and pipe bundle partition plates (C10), wherein the air inlet pipe (C2) and the air outlet pipe (C3) are respectively arranged at two ends of the shell (C1), the first pipe bundle (C8) and the second pipe bundle (C9) are arranged in the shell (C1) at intervals, the pipe bundle partition plates (C10) are respectively arranged at two sides of the first pipe bundle (C8) and the second pipe bundle (C9), the jacket (C6) is arranged at the end part of the shell (C1) and forms the interlayer (C7) between the jacket and the end part of the shell (C1), the cooling liquid inlet pipe (C4) and the cooling liquid outlet pipe (C5) are respectively communicated with the interlayer (C7), the cooling liquid inlet pipe (C4) is arranged at the lower end of the jacket (C6), and the cooling liquid outlet pipe (C5) is arranged at the upper end of the jacket.

9. The ultra-high temperature gas evacuation system of claim 8, wherein: a tube bank (C8) includes a tube bank chamber (C81), a baffle (C82), a cooling intake chamber (C83), a cooling outlet chamber (C84), a cooling inlet pipe (C85), a cooling outlet pipe (C86), a heat exchange tube (C87) and gas stop (C88), a tube bank chamber (C81) and a heat exchange tube (C87) all set up in casing (C1), a baffle (C82) sets up in a tube bank chamber (C81), and separates a tube bank chamber (C81) for a cooling intake chamber (C83) and a cooling outlet chamber (C84), the both ends of a heat exchange tube (C87) communicate with a cooling intake chamber (C83) and a cooling outlet chamber (C84) respectively, a cooling inlet pipe (C85) and a cooling outlet pipe (C86) all set up in a tube bank chamber (C81), and a cooling inlet pipe (C86) and a cooling outlet pipe (C84) communicate with a cooling outlet chamber (C88) respectively, a cooling inlet pipe (C85) and a cooling outlet pipe (C86) and a cooling outlet pipe (C88) are located in a tube bank chamber (C83) and a cooling outlet chamber (C88) and a cooling outlet pipe (C88) respectively, the cooling outlet pipe (C88) and a cooling inlet pipe (C83) and a cooling outlet pipe (C88) and a cooling outlet chamber (C88) department.

10. The ultra-high temperature gas evacuation system of claim 8, wherein: no. two tube bundles (C9) include No. two tube bundle chamber (C91), no. two baffle (C92), no. two cooling intake antrums (C93), no. two cooling water outlet chambeies (C94), no. two cooling inlet tubes (C95), no. two cooling outlet pipe (C96) and No. two heat exchange tubes (C97), no. two tube bundle chamber (C91) and No. two heat exchange tubes (C97) all set up in casing (C1), no. two baffle (C92) set up in No. two tube bundle chamber (C91), and separate No. two tube bundle chamber (C91) for No. two cooling intake antrums (C93) and No. two cooling water outlet chambeies (C94), the both ends of No. two heat exchange tubes (C97) communicate with No. two cooling intake antrums (C93) and No. two cooling water outlet chambeies (C94) respectively, no. two cooling inlet tubes (C95) and No. two cooling outlet pipe (C96) all set up the bottom in No. two tube bundle chamber (C91), and No. two cooling inlet tubes (C95) and No. two cooling outlet pipe (C96) communicate with No. two cooling intake antrums (C93) and No. two cooling outlet pipes (C94) respectively.

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