CN210330719U - Working medium supply system for high-low temperature treatment - Google Patents
Working medium supply system for high-low temperature treatment Download PDFInfo
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- CN210330719U CN210330719U CN201920666326.6U CN201920666326U CN210330719U CN 210330719 U CN210330719 U CN 210330719U CN 201920666326 U CN201920666326 U CN 201920666326U CN 210330719 U CN210330719 U CN 210330719U
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Abstract
The utility model discloses a working medium supply system for high and low temperature treatment, which comprises a heat-insulating cold tank, a pressurizing part for pressurizing the cold tank, a first electric pressure release valve for releasing pressure to the cold tank, a first pressure sensor for detecting the internal pressure of the cold tank, and a first controller for controlling the pressurizing part and the first electric pressure release valve to open and close according to the detection result of the first pressure sensor; the device comprises a heating tank, a heating component, a second electric pressure release valve, a second pressure sensor, a temperature sensor and a second controller, wherein the heating component is used for heating the heating tank, the second electric pressure release valve is used for releasing pressure of the heating tank, the second pressure sensor is used for detecting the internal pressure of the heating tank, the temperature sensor is used for detecting the internal temperature of the heating tank, and the second controller is used for controlling the second electric pressure release valve to be opened and closed according to the detection result of the second pressure sensor and controlling the heating component to be. The working medium supply system can keep relatively stable pressure and temperature of the working medium in the conveying process, and compared with the existing helium-argon refrigerating equipment, the working pressure of the system is lower, and the safety and the economical efficiency are better.
Description
Technical Field
The utility model relates to a high low temperature treatment technical field especially relates to a working medium supply system that high low temperature treatment was used.
Background
At present, high-low temperature treatment technology is becoming the main means of interventional tumor treatment. The technology belongs to pure physical therapy, and has the advantages of exact treatment effect, no tumor cell diffusion caused by treatment, minimally invasive and painless treatment process, quick recovery, no damage to normal tissues and the like compared with radiotherapy and chemotherapy. Clinical data show that the body immunity of the patient treated by the technology is obviously improved compared with that before treatment, and the long-term survival rate is obviously improved. Has obvious advantages in the aspect of treating solid tumors such as lung cancer, liver cancer, breast cancer, kidney cancer, prostate cancer and the like.
At present, the commonly adopted high-low temperature treatment equipment is helium-argon refrigeration equipment taking argon as a low-temperature working medium and helium as a high-temperature working medium, and the action principle of the equipment is joule-thomson effect (rapid temperature change can be generated when high-pressure gas is suddenly released to a low-pressure area), so that the rapid temperature reduction of the argon and the rapid temperature rise of the helium are realized.
Due to the limitation of the action principle, the working pressure of the equipment is high (7-20 MPa), so that potential safety hazards exist in the operation; in addition, the working media (argon and helium) applicable to the equipment are expensive, so that the treatment cost is high.
In view of this, how to improve the existing high and low temperature treatment devices to improve the safety and economy of the operation is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a working medium supply system for high and low temperature treatment, which comprises an adiabatic cold tank, a pressurizing part for pressurizing the cold tank, a first electric pressure release valve for releasing pressure of the cold tank, a first pressure sensor for detecting the internal pressure of the cold tank, and a first controller, wherein the first controller is used for controlling the opening and closing of the pressurizing part and the first electric pressure release valve according to the detection result of the first pressure sensor;
the device also comprises a heat-insulated hot tank, a heating component for heating the hot tank, a second electric pressure release valve for releasing pressure of the hot tank, a second pressure sensor for detecting the internal pressure of the hot tank, a temperature sensor for detecting the internal temperature of the hot tank and a second controller; the second controller is used for controlling the second electric pressure relief valve to be opened and closed according to the detection result of the second pressure sensor and controlling the heating component to be opened and closed according to the detection result of the temperature sensor.
The working principle of the working medium supply part is as follows: the temperature of working medium is maintained through adiabatic cold jar and adiabatic hot jar, and the synergism through pressure boost part and first electronic relief valve maintains cold jar internal pressure's steady, and the synergism through heating part and the electronic relief valve of second maintains hot jar internal pressure's steady to make working medium keep relatively stable temperature and pressure in transportation process, realize the stable output of working medium. Compared with the prior art that the abrupt change of the working medium temperature is realized through the abrupt change of the pressure, the working pressure of the system can be effectively reduced, and therefore the safety of the operation can be improved. Moreover, the working medium supply system can be suitable for various low-temperature working media and various high-temperature working media, so that a user can select the working medium with low price according to actual needs, and the economical efficiency of the operation can be improved.
Furthermore, the working medium supply system also comprises a third electric pressure relief valve for relieving pressure of the liquid feeding pipeline of the cold tank, and a third pressure sensor for detecting the internal pressure of the liquid feeding pipeline of the cold tank; the first controller is communicated with the third electric pressure relief valve and the third pressure sensor to control the opening and closing of the third electric pressure relief valve according to the detection result of the third pressure sensor.
Further, the first electric pressure relief valve, the second electric pressure relief valve and the third electric pressure relief valve are all normally open valves.
Furthermore, the working medium supply system also comprises a first safety valve for releasing the pressure of the cold tank, a second safety valve for releasing the pressure of the hot tank and a third safety valve for releasing the pressure of a liquid charging pipeline of the cold tank.
Furthermore, working medium feed system still including be used for the first manual valve of cold jar pressure release, be used for detecting cold jar internal pressure's first manometer, be used for hot jar pressure release's the manual valve of second and be used for detecting hot jar internal pressure's second manometer.
Furthermore, the working medium supply system also comprises a temperature switch, and the temperature switch is arranged in the hot tank and electrically connected with the heating part.
Furthermore, the working medium supply system also comprises a first electric liquid adding valve arranged on a liquid adding pipeline of the cold tank and a first liquid level meter extending into the cold tank; the first controller is communicated with the first electric liquid adding valve and the first liquid level meter so as to control the opening and closing of the first electric liquid adding valve according to the detection result of the first liquid level meter;
the liquid level meter also comprises a second electric liquid adding valve and a liquid adding pump which are arranged on a liquid adding pipeline of the hot tank and a second liquid level meter extending into the hot tank; the second controller is communicated with the second electric liquid adding valve, the liquid adding pump and the second liquid level meter to control the opening and closing of the second electric liquid adding valve and the liquid adding pump according to the detection result of the second liquid level meter.
Furthermore, the working medium supply system also comprises a detection switch which is communicated with the first controller, and is used for detecting the connection state between the liquid feeding pipeline of the cold tank and the output pipeline of the low-temperature working medium storage tank.
Furthermore, the working medium supply system also comprises an air-cooled heat exchanger and a recovery tank communicated with an outlet of the air-cooled heat exchanger; and the pressure relief outlets of the cold tank, the hot tank and the cold tank are communicated with the inlet of the air-cooled heat exchanger.
Furthermore, the working medium supply system also comprises a third controller, an overflow alarm and a weighing meter supported below the recovery tank, wherein the third controller is communicated with the overflow alarm and the weighing meter so as to control the overflow alarm to send out an alarm signal according to the weighing result of the weighing meter.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a working medium supply system for high and low temperature treatment according to the present invention;
FIG. 2 is a schematic view of the low temperature working medium supply of FIG. 1;
FIG. 3 is a schematic view of a high temperature working medium supply section of FIG. 1;
FIG. 4 is a schematic view of the recovery section of FIG. 1.
The reference numerals in fig. 1-4 are illustrated as follows:
01, a low-temperature working medium storage tank and 02 a high-temperature working medium storage tank;
1 low-temperature working medium supply part, 11 cold tank, 12 first pressure sensor, 13 third pressure sensor, 14 detection switch, 15 first liquid level meter, 16 first pressure gauge, 17 filter, 1a first liquid adding valve, 1b one-way valve, 1c first electric pressure release valve, 1d third electric pressure release valve, 1e first manual valve, 1f first safety valve, 1g third safety valve, 1h pressure increasing valve and 1i first liquid outlet valve;
2, a high-temperature working medium supply part, 21 a hot tank, 22 a second pressure sensor, 23 a heating part, 24 a temperature sensor, 25 a temperature switch, 26 a second liquid level meter, 27 a liquid adding pump, 28 a second pressure gauge, 2a second liquid adding valve, 2b a second electric pressure relief valve, 2c a second manual valve, 2d a second safety valve and 2e a second liquid outlet valve;
3 recovery part, 31 air cooling heat exchanger, 32 recovery tank, 33 weighing meter.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings and the detailed description.
Referring to fig. 1-3, fig. 1 is a schematic diagram of an embodiment of a working medium supply system for high and low temperature treatment according to the present invention; FIG. 2 is a schematic view of the low-temperature working medium supply part 1 in FIG. 1; fig. 3 is a schematic view of the high-temperature working medium supply portion 2 in fig. 1.
As shown in fig. 1, the working medium supply system includes a low-temperature working medium supply portion 1 and a high-temperature working medium supply portion 2.
As shown in fig. 2, low-temperature working medium supply unit 1 includes a heat-insulated cooling tank 11, cooling tank 11 is connected to a liquid feeding line (hereinafter referred to as a first liquid feeding line) and a liquid discharging line (hereinafter referred to as a first liquid discharging line), and first liquid discharging valve 1i is provided on the first liquid discharging line. Before the cold tank is used, low-temperature working medium is injected into the cold tank 11 through the first liquid adding pipeline, in the using process, the first liquid outlet valve 1i is opened, the low-temperature working medium flows into the working medium distribution system through the first liquid outlet pipeline, and then is distributed to different parts to be treated through the working medium distribution system. Specifically, the cold tank 11 may be a vacuum heat-insulating stainless steel pressure tank, and the injected low-temperature working medium may be liquid nitrogen, liquid oxygen, liquid methane, liquid argon, liquid neon, liquid helium, liquefied nitrous, liquefied carbon dioxide, chlorofluorocarbon, or the like.
Furthermore, low-temperature working medium supply unit 1 includes a pressurizing member for pressurizing cooling tank 11, a first electric relief valve 1c for relieving pressure in cooling tank 11, a first pressure sensor 12 for detecting the internal pressure of cooling tank 11, and a first controller (not shown). The first controller is in mutual communication with the pressure increasing component, the first electric pressure relief valve 1c and the first pressure sensor 12, so as to control the opening and closing of the pressure increasing component and the first electric pressure relief valve 1c according to the detection result of the first pressure sensor 12. So set up, under the synergism of pressure boost part and first electronic relief valve 1c, can make the internal pressure of cold jar 11 generally maintain steadily to, can provide power for the output of low temperature working medium through opening the pressure boost part.
As shown in fig. 3, the high-temperature working medium supply unit 2 includes a heat-insulated hot tank 21, the hot tank 21 is communicated with a liquid feeding line (hereinafter referred to as a second liquid feeding line) and a liquid discharging line (hereinafter referred to as a second liquid discharging line), and a second liquid discharging valve 2e is provided on the second liquid discharging line. Before use, high-temperature working media are injected into the hot pot 21 through the second liquid adding pipeline, in the use process, the second liquid outlet valve 2e is opened, the high-temperature working media flow into the working media distribution system through the second liquid outlet pipeline, and then are distributed to different parts to be treated through the working media distribution system. Specifically, the hot tank 21 may be a vacuum heat-insulating stainless steel pressure tank, and the injected high-temperature working medium may be water, methanol, formic acid, ethanol, acetic acid, ethyl ester, propanol, propionic acid, propyl ester, or the like.
The high-temperature working medium supply unit 2 further includes a heating member 23 for heating the working medium in the hot tank 21, a second electric relief valve 2b for relieving pressure in the hot tank 21, a second pressure sensor 22 for detecting the internal pressure of the hot tank 21, a temperature sensor 24 for detecting the internal temperature of the hot tank 21, and a second controller (not shown). The second controller communicates with the heating member 23, the second electric relief valve 2b, the second pressure sensor 22, and the temperature sensor 24 to control the opening and closing of the second electric relief valve 2b according to the detection result of the second pressure sensor 22 and control the opening and closing of the heating member 23 according to the detection result of the temperature sensor 24. So set up, under heating element 23 and the electronic relief valve 2b synergism, can make the internal pressure of hot jar 21 generally maintain steadily to, through opening heating element 23, can provide power for the output of high temperature working medium.
From the above analysis, the working principle of the working medium supply part is as follows: the temperature of working medium is maintained through adiabatic cold jar 11 and adiabatic hot jar 21, and the synergy through pressure boost part and first electronic relief valve 1c maintains the steady of cold jar 11 internal pressure, and the synergy through heating part 23 and second electronic relief valve 2b maintains the steady of hot jar 21 internal pressure to make high low temperature working medium keep relatively stable temperature and pressure in transportation process, realize the stable output of working medium. Compared with the prior art that the abrupt change of the working medium temperature is realized through the abrupt change of the pressure, the working pressure of the system can be effectively reduced, and therefore the safety and the reliability of the surgical equipment can be improved. Moreover, the working medium supply system can be suitable for various low-temperature working media and various high-temperature working media, so that a user can select the working medium with low price according to actual needs, and the economical efficiency of the operation can be improved.
Specifically, the working pressure of the working medium supply system can be lower than or equal to the critical pressure of the low-temperature working medium, and can also be higher than the critical pressure of the low-temperature working medium. When the working pressure of the working medium supply system is higher than the critical pressure of the low-temperature working medium, the low-temperature working medium is in a supercritical state, and the low-temperature working medium is conveyed in the supercritical state, so that the on-way cold loss can be effectively reduced.
Specifically, as shown in fig. 2, the pressurization component may be a pressurization pipeline, a pressurization valve 1h is disposed on the pressurization pipeline, the pressurization pipeline is located outside the cold tank 11, and both ends of the pressurization pipeline are communicated with the inside of the cold tank 11. When the pressure increasing valve is opened for 1h, part of the low-temperature working medium in the cold tank 11 enters the pressure increasing pipeline, is gasified by heat exchange with the outside through the pipe wall, and flows back into the cold tank 11 after the volume is expanded violently, so that the internal pressure of the cold tank 11 is increased. It should be noted that the structure of the pressure increasing component is not limited to the example shown in fig. 2, for example, the pressure increasing component may also be a compressor, and the pressure increasing purpose is realized by pressing a gas with a boiling point not higher than that of the low-temperature working medium into the cold tank 11 through the compressor.
Specifically, as shown in fig. 3, the heating member 23 may be a heating rod or a heating sheet disposed inside the hot pot 21. It should be noted that the structure of the heating element 23 is not limited to the example shown in fig. 3, for example, the heating element 23 may also be a ceramic heater coated on the outer wall of the hot tank 21, or may also be a microwave heater.
The control strategy is exemplarily described, a working pressure P of the cold tank 11, a first pressure P- △ P0 slightly lower than the working pressure P, a second pressure P + △ P1 slightly higher than the working pressure P (△ P1 < △ P0), a third pressure P- △ P2 far lower than the working pressure P and a liquid level h0 are preset in the first controller, the pressure detected by the first pressure sensor 12 is recorded as Pn., when the liquid level in the cold tank 11 is higher than h0, if the pressure relief valve P2 is not less than Pn- △ P0, the first electric pressure relief valve 1c is closed, the pressure boosting component is opened, if the pressure relief valve P0 is less than Pn 0, the first electric pressure relief valve 1c is indicated to be closed, if the pressure relief valve P2 is not less than P- △ P0, the first electric pressure relief valve is indicated to be closed, the pressure boosting component is opened, if the pressure relief valve P △ P0 is less than Pn < P, the first electric pressure relief valve 1c is indicated to be closed, if the pressure relief valve P2 is not less than Pn + 2, the first electric pressure boosting component is indicated to be closed, or the pressure boosting component is not less than P2, the second electric pressure relief valve 2 is indicated to be opened, and the second electric pressure relief valve 2.
Specifically, according to different working conditions, the second controller may also control the opening and closing of the heating member 23 and the second electric relief valve 2b by using different control strategies. Since the saturated vapor pressure and the temperature of the high-temperature working medium are in one-to-one correspondence, a control strategy which is convenient to implement is a temperature PID control strategy, which is a technique well known to those skilled in the art and is not described herein again.
Further, the low-temperature working medium supply part 1 is also provided with a third electric pressure relief valve 1d for relieving pressure of the first liquid feeding pipeline and a third pressure sensor 13 for detecting the internal pressure of the first liquid feeding pipeline, and the third electric pressure relief valve 1d and the third pressure sensor 13 are communicated with the first controller, so that the first controller controls the opening and closing of the third electric pressure relief valve 1d according to the detection result of the third pressure sensor 13. So set up, can avoid remaining low temperature working medium in first liquid feeding pipeline and external heat transfer after the volume expansion cause the too big problem of first liquid feeding pipeline internal pressure.
Preferably, the first electric relief valve 1c, the second electric relief valve 2b, and the third electric relief valve 1d are all normally open valves, and all of them are opened when the system is powered off, so that the system is in a safe state without pressure after the power off.
Furthermore, the low-temperature working medium supply part 1 and the high-temperature working medium supply part 2 are both provided with safety valves so as to improve the safety of the system.
Specifically, as shown in fig. 2, the low-temperature working medium supply unit 1 is provided with a first safety valve 1f (two first safety valves 1f are provided in the drawing) for releasing pressure to the cold tank 11, and a third safety valve 1g for releasing pressure to the first charging line. So set up, when first electronic relief valve 1c normally worked, give cold jar 11 pressure releases through first electronic relief valve 1c, in case first electronic relief valve 1c became invalid, then can give cold jar 11 pressure releases through first relief valve 1f, when the normal during operation of third electronic relief valve 1d, give first liquid feeding pipeline pressure release through third electronic relief valve 1d, in case third electronic relief valve 1d became invalid, then give first liquid feeding pipeline pressure release through third relief valve 1 g.
Specifically, as shown in fig. 3, the high-temperature working medium supply unit 2 is provided with a second relief valve 2d for relieving pressure in the hot tank 21. So set up, when second electronic relief valve 2b normally worked, give hot jar 21 pressure release through second electronic relief valve 2b, in case second electronic relief valve 2b is invalid, then can give hot jar 21 pressure release through second relief valve 2 d.
Furthermore, the low-temperature working medium supply part 1 and the high-temperature working medium supply part 2 are both provided with manual valves, so that the safety of the system is further improved.
Specifically, as shown in fig. 2, low-temperature working medium supply unit 1 is provided with a first manual valve 1e for depressurizing cold tank 11 and a first pressure gauge 16 for detecting the internal pressure of cold tank 11. So set up, once first electronic relief valve 1c and first relief valve 1f all fail, can read cold jar 11 internal pressure and give cold jar 11 pressure release through first manual valve 1e through first manometer 16.
Specifically, as shown in fig. 3, the high temperature working medium supply unit 2 is further provided with a second manual valve 2c for releasing the pressure of the hot tank 21 and a second pressure gauge 28 for detecting the internal pressure of the hot tank 21, and in this arrangement, when both the second electric relief valve 2b and the second relief valve 2d fail, the internal pressure of the hot tank 21 can be read by the second pressure gauge 28 and the pressure of the hot tank 21 can be released through the second manual valve 2 c.
Furthermore, the low-temperature working medium supply part 1 and the high-temperature working medium supply part 2 are both provided with liquid adding assemblies.
Specifically, as shown in fig. 2, the liquid feeding assembly of the low-temperature working medium supply part 1 includes a first electric liquid feeding valve 1a disposed on the first liquid feeding pipeline and a first liquid level meter 15 extending into the cold tank 11, and the first electric liquid feeding valve 1a and the first liquid level meter 15 are both in communication with the first controller.
During liquid feeding, the output pipeline of the low-temperature working medium storage tank 01 for storing the low-temperature working medium is connected to the end connector of the first liquid feeding pipeline, after connection, the first electric liquid feeding valve 1a is opened through the first controller, then the output valve of the low-temperature working medium storage tank 01 is opened (arranged on the output pipeline of the low-temperature working medium storage tank 01), and the low-temperature working medium is gradually filled into the cold tank 11 under the self-pressurization effect of the low-temperature working medium storage tank 01. When the first controller judges that the liquid level detected by the first liquid level meter 15 is greater than or equal to the highest liquid level preset in the first controller, a closing instruction is sent to the first electric liquid adding valve 1a and an opening instruction is sent to the first electric pressure relief valve 1 c.
Preferably, a detection switch 14 can be further arranged near the end interface of the first liquid adding pipeline and used for detecting whether the first liquid adding pipeline is effectively connected with the output pipeline of the low-temperature working medium storage tank or not, the detection switch 14 is communicated with the first controller, and when the detection switch 14 detects that the end interface is effectively connected with the output pipeline of the low-temperature working medium storage tank, the first electric liquid adding valve 1a can be opened. So set up, can avoid the risk that the output pipeline of first liquid feeding pipeline and low temperature working medium storage jar wrongly opened first electronic liquid feeding valve 1a when not connecting well.
Preferably, a one-way valve 1b can be further arranged on the first liquid adding pipeline to prevent the low-temperature working medium in the cold tank 11 from flowing back under the condition that the first electric liquid adding valve 1a fails, so that the safety of the liquid adding process is ensured.
Specifically, as shown in fig. 3, the charging assembly of the high-temperature working medium supply part 2 includes a second electric charging valve 2a and a charging pump 27 provided on the second charging line, and a second level gauge 26 extending into the hot tank 21. The second electrically operated charging valve 2a, the charging pump 27 and the second level gauge 26 all communicate with a second controller.
During the liquid feeding, the output pipeline of the high temperature working medium storage tank 02 storing the high temperature working medium is connected to the end interface of the second liquid feeding pipeline, after the connection, the second electric liquid feeding valve 2a is opened through the second controller and the liquid feeding pump 27 is started, and under the action of the liquid feeding pump 27, the high temperature working medium is gradually fed into the hot tank 21. And when the second controller judges that the liquid level detected by the second liquid level meter 26 is greater than or equal to the highest liquid level preset in the second controller, the second controller sends closing instructions to the second electric charging valve 2a and the charging pump 27 in sequence.
Further, as shown in fig. 2, the low temperature working medium supply part 1 may be further provided with a filter 17, a lower end of the first liquid outlet pipe extends into the bottom side of the interior of the cold tank 11, and the filter 17 is disposed at a lower end of the second liquid outlet pipe to prevent impurities from entering the part to be treated along with the low temperature working medium.
Further, as shown in fig. 3, the high temperature working medium supply part 1 may further be configured with a temperature switch 25 for opening and closing the heating member 23, and the temperature switch 25 is disposed inside the hot tank 21 and electrically connected to the heating member 23. When the heating member 23 is dried and the temperature exceeds the off temperature of the temperature switch 25, the temperature switch 25 is automatically turned off to stop heating the heating member 23.
Furthermore, as shown in fig. 1, the working fluid supply system is also provided with a recovery section 3. Referring to fig. 4, fig. 4 is a schematic view of the recycling unit 3 in fig. 1.
As shown in fig. 4, the recovery unit 3 includes an air-cooled heat exchanger 31 and a recovery tank 32 communicating with an outlet of the air-cooled heat exchanger 31. The pressure relief outlets of the cold tank 11, the hot tank 21 and the first liquid adding pipeline are communicated with the inlet of the air-cooled heat exchanger 31, and particularly, the outlets of the first electric pressure relief valve 1c, the second electric pressure relief valve 2b, the third electric pressure relief valve 1d, the first manual pressure relief valve and the second manual pressure relief valve are connected with the inlet of the air-cooled heat exchanger 31 through pipelines.
So set up, the low temperature working medium that the pressure release was discharged flows through air cooled heat exchanger 31 heat transfer earlier and heaies up and flow into recovery tank 32 again, can avoid producing too much condensation white fog, and the high temperature working medium that the pressure release was discharged flows through air cooled heat exchanger 31 heat transfer condensation earlier and flows into recovery tank 32 again, can avoid the diffusion of high temperature working medium in the environment. In addition, the working medium of the working medium distribution system can also be connected to the air-cooled heat exchanger 31 for treatment and recovery.
Preferably, the recovery part 3 may further include an overflow alarm (not shown), a weight scale 33 supported below the recovery tank 32, and a third controller in communication with the overflow alarm and the weight scale 33, wherein the third controller sends an alarm command to the overflow alarm when determining that the weighed weight of the weight scale 33 is greater than or equal to a preset maximum weight, and the overflow alarm sends an alarm signal after receiving the alarm command to remind a user of treating the waste liquid in the recovery tank 32.
The working medium supply system for high and low temperature treatment provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The working medium supply system for high and low temperature treatment is characterized by comprising a heat-insulating cold tank (11), a pressurizing part for pressurizing the cold tank (11), a first electric pressure relief valve (1c) for relieving pressure of the cold tank (11), a first pressure sensor (12) for detecting the internal pressure of the cold tank (11), and a first controller, wherein the first controller is used for controlling the opening and closing of the pressurizing part and the first electric pressure relief valve (1c) according to the detection result of the first pressure sensor (12);
the device also comprises a heat-insulated hot tank (21), a heating component (23) for heating the hot tank (21), a second electric pressure release valve (2b) for releasing pressure to the hot tank (21), a second pressure sensor (22) for detecting the internal pressure of the hot tank (21), a temperature sensor (24) for detecting the internal temperature of the hot tank (21), and a second controller; the second controller is used for controlling the opening and closing of the second electric pressure relief valve (2b) according to the detection result of the second pressure sensor (22) and controlling the opening and closing of the heating component (23) according to the detection result of the temperature sensor (24).
2. Working medium supply system according to claim 1, further comprising a third electrically operated pressure relief valve (1d) for relieving pressure to the charging line of the cold tank (11), a third pressure sensor (13) for detecting the pressure inside the charging line of the cold tank (11); the first controller is communicated with the third electric pressure relief valve (1d) and the third pressure sensor (13) to control the opening and closing of the third electric pressure relief valve (1d) according to the detection result of the third pressure sensor (13).
3. Working medium supply system according to claim 2, characterized in that the first electric pressure relief valve (1c), the second electric pressure relief valve (2b) and the third electric pressure relief valve (1d) are all normally open valves.
4. Working medium supply system according to claim 2, further comprising a first safety valve (1f) for venting the cold tank (11), a second safety valve (2d) for venting the hot tank (21) and a third safety valve (1g) for venting the filling line of the cold tank (11).
5. Working medium supply system according to claim 4, further comprising a first manual valve (1e) for venting the cold tank (11), a first pressure gauge (16) for detecting the pressure inside the cold tank (11), a second manual valve (2c) for venting the hot tank (21) and a second pressure gauge (28) for detecting the pressure inside the hot tank (21).
6. Working medium supply system according to claim 1, characterized in that a temperature switch (25) is provided, which temperature switch (25) is arranged inside the hot tank (21) and is electrically connected to the heating element (23).
7. Working medium supply system according to claim 1, further comprising a first electrically operated filling valve (1a) arranged on the filling line of the cold tank (11) and a first level gauge (15) extending into the interior of the cold tank (11); the first controller is communicated with the first electric liquid adding valve (1a) and the first liquid level meter (15) to control the opening and closing of the first electric liquid adding valve (1a) according to the detection result of the first liquid level meter (15);
the device also comprises a second electric liquid filling valve (2a) and a liquid filling pump (27) which are arranged on a liquid filling pipeline of the hot tank (21), and a second liquid level meter (26) which extends into the hot tank (21); the second controller is communicated with the second electric liquid adding valve (2a), the liquid adding pump (27) and the second liquid level meter (26) so as to control the opening and closing of the second electric liquid adding valve (2a) and the liquid adding pump (27) according to the detection result of the second liquid level meter (26).
8. Working medium supply system according to claim 7, characterized in that it further comprises a detection switch (14) in communication with said first controller for detecting the connection state between the filling line of said cold tank (11) and the output line of the cryogenic working medium storage tank (01).
9. Working medium supply system according to any one of claims 1 to 8, characterized by further comprising an air-cooled heat exchanger (31) and a recovery tank (32) in communication with the outlet of the air-cooled heat exchanger (31); and the pressure relief outlets of the cold tank (11), the hot tank (21) and the cold tank (11) are communicated with the inlet of the air-cooled heat exchanger (31).
10. Working medium supply system according to claim 9, characterized in that it further comprises a third controller, an overflow alarm and a weighing scale (33) supported below the recovery tank (32), the third controller communicating with the overflow alarm and the weighing scale (33) to control the overflow alarm to issue an alarm signal depending on the weighing result of the weighing scale (33).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920666326.6U CN210330719U (en) | 2019-05-09 | 2019-05-09 | Working medium supply system for high-low temperature treatment |
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| CN201920666326.6U CN210330719U (en) | 2019-05-09 | 2019-05-09 | Working medium supply system for high-low temperature treatment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023001215A1 (en) * | 2021-07-22 | 2023-01-26 | 海杰亚（北京）医疗器械有限公司 | Electrical control system for minimally invasive therapy of tumors |
| CN116428759A (en) * | 2023-06-13 | 2023-07-14 | 北京中科富海低温科技有限公司 | Refrigeration system and method for transporting low-temperature fluid in long distance |
-
2019
- 2019-05-09 CN CN201920666326.6U patent/CN210330719U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023001215A1 (en) * | 2021-07-22 | 2023-01-26 | 海杰亚（北京）医疗器械有限公司 | Electrical control system for minimally invasive therapy of tumors |
| CN116428759A (en) * | 2023-06-13 | 2023-07-14 | 北京中科富海低温科技有限公司 | Refrigeration system and method for transporting low-temperature fluid in long distance |
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