CN202349305U - Cryogenic system temperature control throttle valve - Google Patents
Cryogenic system temperature control throttle valve Download PDFInfo
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- CN202349305U CN202349305U CN201120370013XU CN201120370013U CN202349305U CN 202349305 U CN202349305 U CN 202349305U CN 201120370013X U CN201120370013X U CN 201120370013XU CN 201120370013 U CN201120370013 U CN 201120370013U CN 202349305 U CN202349305 U CN 202349305U
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- valve
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Abstract
A cryogenic system temperature control throttle valve, which belongs to a temperature controller and a throttling refrigerator for negative 200 DEG C cryogenic systems, comprises a valve rod, a valve body, a spring, a spring retainer, spring-adjusting bolts, a valve body end cover, a spring-adjusting ring, a seal ring, a diffuser and the like, and is characterized in that: the diffuser is screwed in the top of the valve body of the throttle valve, the valve body end cover is screwed in the bottom of the valve body, the compression spring is arranged in the middle of the valve body, the moving end of the spring is in contact with the spring-adjusting ring, and the spring-adjusting bolts are screwed in the spring retainer; the valve rod is located in the center of the diffuser and provided with the seal ring, and the bottom end of the valve rod is screwed in the spring retainer; the spring-adjusting bolts can be rotated to push the spring-adjusting ring to finely adjust the pretightening force of the spring, so that the fixed saturated pressure of a system can be controlled to correspond to a saturated temperature; after cryogenic fluid flows through the diffuser to press the valve rod to move upwards and generate violent vibration, a throttling differential refrigeration effect is realized, and after being throttled, cold energy can be effectively applied to cryogenic system temperature control. The throttle valve is applicable to the variable-pressure, variable-temperature and multi-phase flow dynamic cryogenic refrigeration process.
Description
Technical field
Cryogenic system temperature control throttle valve belongs to cryogenic system below-200 ℃ with temperature control apparatus and throttling refrigeration device; Belong to new type low temperature process control front end product; Relate to the cooling throttling refrigeration equipment technology of the heterogeneous change of cryogen; Be applicable to emission control process, temperature controlled processes and the throttling refrigeration process of cryogen in the cryogenic system; It mainly acts on is to utilize the inner saturated liquid temperature of differential temperature control technology control system and produce the differential throttle effect, realizes control of cryogenic system temperature and throttling refrigeration effect.
Background technique
Because the cryogenic refrigerating system temperature generally is lower than-200 ℃, ambient temperature has the big temperature difference relatively, and cryogen generally is in saturation state, superheat state or high pressure multiphase flow state.When system's thermal environment changed, multiphase flow very easily caused overheated boiling or subcooled boiling.In starting and stable operation process, has complicated heat-transfer behavior; Cryogen is in fierce phase transformation and heterogeneous flowing state and is attended by pressure and the acute variation of temperature in the system; Constantly produce a large amount of saturated vapors, superheated vapor, saturated liquids, super-heated liquid and gas-liquid two-phase flow, not outwards discharging of section in the pressure and temperature varying process, cryogenic system difficult control of temperature; Process of refrigerastion is complicated and changeable, and Security is difficult to problems such as assurance.The utility model is primarily aimed at control of cryogen temperature and throttling refrigeration problem; Control inner saturated liquid temperature through the inner saturated vapor pressure of control system; Reduce problem, finally solve the temperature control and the refrigeration problem of cryogenic system because the unstable inside temperature that is caused of system's transformation, alternating temperature and surface heat flux suddenlys change.Aspects such as the throttle valve of cryogenic system temperature control simultaneously freezing by change of state, diffusion shunting and maintenance overall structure to excess refrigerant in cryogen filling or starting process is stable, global temperature distribution rationally have important function equally.
Summary of the invention
According to temperature control technology characteristics in the open type low temperature phase change process of refrigerastion; Design cryogenic system temperature control throttle valve; Be used for solving the cryogen temperature control and the refrigeration difficult problem of transformation, alternating temperature, the dynamic process of refrigerastion of multiphase flow cryogenic system; Improve freezing by change of state efficient, realize effective control of cryogenic system temperature, effective management of cryogen process of refrigerastion.
The utility model technical solution:
According to control of cryogenic system temperature and refrigeration characteristics, design cryogenic system temperature control throttle valve comprises valve rod 1, valve body 2, spring 3, spring adjustment circle 4, spring adjustment bolt 5, valve body end cap 6, spring capping 7, seal ring 8, diffusion cover 9.Said valve rod 1 is positioned at diffusion cover 9 centers and is provided with seal ring 8; Diffusion cover 9 is positioned at valve body 2 centers; Valve body 2 screw top connect diffusion cover 9, and bottom thread connects valve body end cap 6, and the centre is provided with holddown spring 3; Spring 3 tache motorices contact with spring adjustment circle 4; Spring adjustment bolt 5 passes valve body end cap 6 spring capping 7 that is threaded; The spring capping 7 bottoms valve rod 1 that is threaded; Valve body 2 edges are provided with flange, and throttle valve is connected with cryogenic system through valve body 2 flanges; Valve body 2 is installed in the cryogenic system, and the side has fluid inlet; Diffusion cover 9 is positioned at outside the cryogenic system, and diffusion cover 9 bottoms have fluid inlet.
Through rotating spring adjustment bolt 5 propelling springs adjustment circle 4 fine-tuning spring 3 pretightening forces; Spring 3 is through the corresponding system of pretightening force saturation pressure control definite value cryogenic system saturation temperature.When the corresponding saturation pressure of system's saturation temperature surpasses spring 3 control system pressure promptly greater than spring 3 pretightening forces; Cryogen gets into valve body 2 through valve body 2 lower inlet; Get into diffusion cover 9 through diffusion cover 9 lower inlet again; Compressing valve rod 1 moves upward when flowing through diffusion cover 9 tops, drives spring capping 7, spring adjustment circle 4 simultaneously, spring adjustment bolt 5 moves upward and pressure spring 3, drives the vibration of valve rod 1 top spool again and produces the throttling differential effect; Reach the throttling refrigeration purpose, the cold of generation can effectively be applied to self temperature controlled processes of cryogenic system through system pipeline.
The problems of principle that scheme is related:
The cryogenic system surface is accepted after solar radiation, cross-ventilation heat exchange, environment thermal radiation or the Pneumatic friction heat; The internal system steam temperature can change thereupon; Especially after accepting instantaneous high heat flux heat; Because the refrigeration agent subcooled boiling produces a large amount of superheated vapors, superheated vapor causes the system pressure acute variation, may cause certain safety problem if can not effectively discharge superheated vapor.If heat transfer condition is poor in the system, system temperature is low excessively; When being lower than the pairing saturated vapor temperature of refrigeration agent triple point; Serious interim liquid flooding phenomenon then can occur or solidify phenomenon; If a large amount of superheated vapors that liquid flooding produces can not effectively be discharged, then internal system pressure can sharply rise, thereby produces dangerous.Refrigeration agent curing then possibly cause inner capillary materials can not effectively transmit refrigeration agent, and heat transfer condition worsens, and surface temperature can't evenly be controlled.The utility model is described emphatically through controlling cryogenic system pressure and then control system saturation temperature between definite value temperature and triple point temperature, realizes the effective problem of management of cryogen when ambient pressure variations.Control cryogenic system temperature is between triple point temperature to refrigeration agent definite value saturation temperature; If system temperature is higher than the definite value saturation temperature; Then valve is opened with the release of throttling refrigeration mode automatically, thereby produces the throttling refrigeration effect, makes cryogenic system temperature maintenance definite value temperature behind the recovery cold; When system temperature was lower than the definite value temperature, throttle valve cut out automatically.When the internal system temperature raises once more, when surface temperature raises, throttling refrigeration again, so circulation finally realizes the control of cryogenic system temperature and produces throttling differential refrigeration effect.
Technical characterstic of the present invention:
The present invention is primarily aimed at control of cryogenic system temperature and throttling refrigeration problem; Be characterized in to satisfy the temperature controlled requirement of cryogenic system; Can realize cryogen high low pressure control purpose; Realize the double utility of temperature control and throttling refrigeration, help solving the multiphase flow problem that outside pernicious heat transfer causes.When system accepted the heating of instantaneous high heat flux, the refrigerant superheat boiling caused internal system vapor pressure acute variation, and the temperature control capability of application of temperature control throttle valve can effectively be controlled the superheated vapor discharging, guarantees system safety operation.Cryogenic system temperature control throttle valve is throttling saturated vapor, saturated liquids, overcooled liquid, super-heated liquid, super-cooled vapor, superheated vapor and multiphase flow effectively, finally realizes the temperature control and the throttling refrigeration purpose of cryogenic system.
Description of drawings:
Critical piece and position relation for cryogenic system temperature control throttle valve shown in Figure 1.
Embodiment:
Through rotating spring adjustment bolt 5 propelling springs adjustment circle 4 fine setting springs 3 pretightening forces, make the corresponding system's saturation pressure of spring 3 pretightening forces and cryogenic system definite value saturation temperature consistent, and pretightening force is higher than corresponding refrigeration agent triple point saturation pressure; Cryogenic system temperature control throttle valve is installed on the cryogenic system, the operation cryogenic system, make throttle valve can the control system temperature between triple point corresponding saturation temperature and definite value temperature; Under worst cold case, adjust spring 3 pretightening forces repeatedly, make control definite value temperature reach the control accuracy requirement; When system temperature surpassed the definite value temperature, throttle valve was opened with throttle style release and refrigeration automatically, produces the throttling refrigeration effect, and cold is introduced cryogenic system through the method that adds cooling line and reclaimed, and makes cryogenic system keep the definite value temperature; When ambient temperature changed, system temperature was lower than the triple point temperature, and when external pressure was lower than the triple point saturation pressure, throttle valve cut out automatically, kept system's triple point temperature.
Detailed process is described below: when system temperature is consistent with saturation temperature, and throttle valve control stabilization system saturation temperature, and keep state of rest; When system pressure surpasses spring 3 control system pressure promptly greater than spring 3 pretightening forces; Fluid flows to diffusion cover 9 through the import of diffusion cover 9 belows; Compressing valve rod 1 move upward and drive spring capping 7, spring adjustment circle 4, spring adjustment bolt 5 moves upward; And pressure spring 3, after the throttle valve throttling reach throttling refrigeration and control temperature action.Temperature reduces the back throttle valve and recovers state of rest.
Claims (5)
1. the cryogenic system temperature is controlled throttle valve; Mainly be made up of valve rod (1), valve body (2), spring (3), spring adjustment circle (4), spring adjustment bolt (5), valve body end cap (6), spring capping (7), seal ring (8), diffusion cover (9), said throttle valve valve rod (1) is positioned at diffusion cover (9) center and is provided with seal ring (8); Diffusion cover (9) is positioned at valve body (2) center; Valve body (2) screw top connects diffusion cover (9), and bottom thread connects valve body end cap (6), and the centre is provided with holddown spring (3); Spring (3) tache motorice contacts with spring adjustment circle (4); Spring adjustment bolt (5) passes valve body end cap (6) spring capping (7) that is threaded; Spring capping (7) the bottom valve rod (1) that is threaded.
2. according to claim
1Described cryogenic system temperature control throttle valve is characterized in that: through rotating spring adjustment bolt (5) propelling spring adjustment circle (4) fine-tuning spring (3) pretightening force; Through the corresponding definite value saturation temperature of control spring (3) pretightening force may command cryogenic system saturation pressure.
3. according to claim
1Described cryogenic system temperature control throttle valve, it is characterized in that: valve body (2) edge is provided with flange, and cryogenic system temperature control throttle valve is connected with cryogenic system through valve body (2) flange; Valve body (2) is installed in the cryogenic system, and the side has fluid inlet.
4. according to claim
1Described cryogenic system temperature control throttle valve, it is characterized in that: diffusion cover (9) is positioned at outside the cryogenic system, and diffusion cover (9) bottom has fluid inlet.
5. according to claim
1Described cryogenic system temperature control throttle valve; It is characterized in that: when cryogenic system pressure surpasses spring (3) control system pressure promptly greater than spring (3) pretightening force; Cryogen gets into valve body (2) through valve body (2) lower inlet; Get into diffusion cover (9) through diffusion cover (9) lower inlet again, compressing valve rod (1) moves upward when flowing through diffusion cover (9), drives spring capping (7), spring adjustment circle (4), spring adjustment bolt (5) simultaneously and moves upward and pressure spring (3); Drive the vibration of valve rod (1) top spool again and produce the throttling differential effect, reach the throttling refrigeration purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120370013XU CN202349305U (en) | 2011-09-27 | 2011-09-27 | Cryogenic system temperature control throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120370013XU CN202349305U (en) | 2011-09-27 | 2011-09-27 | Cryogenic system temperature control throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349305U true CN202349305U (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120370013XU Expired - Fee Related CN202349305U (en) | 2011-09-27 | 2011-09-27 | Cryogenic system temperature control throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202349305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821974A (en) * | 2014-03-01 | 2014-05-28 | 张周卫 | LNG (liquefied natural gas) check valve |
| CN104455599A (en) * | 2014-11-24 | 2015-03-25 | 西北工业大学 | Safety valve with tubular column structure |
-
2011
- 2011-09-27 CN CN201120370013XU patent/CN202349305U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821974A (en) * | 2014-03-01 | 2014-05-28 | 张周卫 | LNG (liquefied natural gas) check valve |
| CN104455599A (en) * | 2014-11-24 | 2015-03-25 | 西北工业大学 | Safety valve with tubular column structure |
| CN104455599B (en) * | 2014-11-24 | 2016-08-24 | 西北工业大学 | A kind of tubular column structure easing valve |
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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: 20120725 Termination date: 20120927 |