CN209068800U - Temperature measuring assembly of working medium of refrigeration or heat pump system and refrigeration or heat pump system - Google Patents

Temperature measuring assembly of working medium of refrigeration or heat pump system and refrigeration or heat pump system Download PDF

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Publication number
CN209068800U
CN209068800U CN201821723939.0U CN201821723939U CN209068800U CN 209068800 U CN209068800 U CN 209068800U CN 201821723939 U CN201821723939 U CN 201821723939U CN 209068800 U CN209068800 U CN 209068800U
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China
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working medium
heat pump
pump system
refrigeration
metal protection
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CN201821723939.0U
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Inventor
黄碧涵
郭嘉
陈六彪
周远
王俊杰
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Technical Institute of Physics and Chemistry of CAS
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Technical Institute of Physics and Chemistry of CAS
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Abstract

The utility model provides a temperature measurement subassembly of refrigeration or heat pump system working medium, its include the lower extreme seal upper end open-ended metal protection sleeve and with lower extreme bottom contact and fixed platinum resistance temperature element in the metal protection sleeve, many leads are connected to platinum resistance temperature element's signal output part, sealed packing is sealed in the metal protection sleeve has sealed glue, sealed glue will many the input of lead wire platinum resistance temperature element's signal output part, platinum resistance temperature element and metal protection sleeve encapsulation are as an organic whole. The utility model also provides a refrigeration or heat pump system. The utility model discloses can the temperature value of each temperature measurement point of accurate measurement, guarantee that this temperature measurement subassembly is good still leakproofness under high-pressure environment, the system is the steady continuous operation safely.

Description

The temperature of refrigeration or heat pump system working medium measurement component and refrigeration or heat pump system
Technical field
The utility model relates to freeze or the technical field of temperature measurement of heat pump system working medium, more particularly to a kind of refrigeration Or the temperature measurement component and refrigeration or heat pump system of heat pump system working medium.
Background technique
Trans-critical cycle CO with injector2Refrigeration or heat pump system in, comprising compressor, air cooler, injector, expansion valve, Evaporator and gas-liquid separator.CO2It is charged system from suction port of compressor, then becomes high temperature and pressure gas in compressor outlet Body, after air cooler exchanges heat, CO2Refrigerant itself can cool down, and that generate after injector is CO2Gas-liquid mixed two phase flow Body, two-phase fluid realize gas-liquid separation in gas-liquid separator, wherein CO2Liquid enters evaporator heat exchange after electric expansion valve Afterwards, the CO of gasification2Injector can be returned to as driving fluid, therefore forms a complete ejector refrigeration or heat pump cycle.
In system operation, the temperature sensor that each temperature measuring point is placed needs and CO2Refrigerant directly contacts, ability Obtain accurate fluid temperature values.Meanwhile it can reach under the hyperbaric environment of 11MPA in system maximum experimental pressure, it is necessary to assure The leakproofness of system well just can safely carry out experiment test job.The temperature value of accurate measurement each point is for carrying out accurately Performance test has important meaning.
Utility model content
(1) technical problems to be solved
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
The purpose of the utility model is to provide the temperature measurement components and refrigeration or heat of a kind of refrigeration or heat pump system working medium Pumping system, with the temperature value of each temperature measuring point of precise measurement, it is ensured that even if this temperature measurement component still seals under hyperbaric environment Property is good, system safely stable continuous service.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model embodiment provide it is a kind of refrigeration or heat pump system working medium temperature Measure component comprising the metal protection protector of lower end closed upper end opening and contact with the lower end base in the metal protection protector And fixed platinum resistor temperature measuring element, the signal output end of the platinum resistor temperature measuring element connect more leads, the metal is protected It is packaged with sealant in sheath, the sealant is by the input terminal of the more leads, the signal of the platinum resistor temperature measuring element Output end, platinum resistor temperature measuring element and metal protection protector are packaged as a whole.
In the utility model embodiment, the metal protection protector uses stainless steel sleeve, the lower end appearance of the stainless steel sleeve Face is in arc surface.
In the utility model embodiment, the platinum resistor temperature measuring element uses PT100 platinum resistor temperature measuring element.
In the utility model embodiment, the platinum resistor temperature measuring element is set to the lower end center in the metal protection protector Place, the platinum resistor temperature measuring element are connected with signal wire, and the signal wire is set upwards along the axis vertical of the metal protection protector It sets, the top of the signal wire forms the signal output end of the platinum resistor temperature measuring element.
In the utility model embodiment, the more leads are four.
The utility model embodiment also provides a kind of refrigeration or heat pump system, including working medium pipeline and is set to the working medium tube Road forms compressor, air cooler, injector, expansion valve, evaporator and the gas-liquid separator of refrigeration or heat pump cycle;The work It is located at the suction port of compressor, compressor outlet, air cooler outlet, injector outlet, expansion valve inlet, evaporator on matter pipeline Entrance and evaporator outlet are equipped with the temperature measurement component of refrigeration or heat pump system working medium as described in the above technical scheme;Institute It states metal protection protector and extends into the working medium of the working medium pipeline and contacted with the working medium, pass through the platinum resistor temperature measuring element and survey Measure the temperature of the working medium.
In the utility model embodiment, the working medium is Trans-critical cycle CO2
In the utility model embodiment, the working medium tube road is located at the suction port of compressor, compressor outlet, air cooler Outlet, injector outlet, expansion valve inlet, evaporator inlet and evaporator exit are equipped with threeway ferrule fitting, and described three Logical ferrule fitting includes positioned at two horizontal cutting ferrules at horizontal segment both ends and vertically set on the vertical cutting ferrule of the horizontal segment;Two The horizontal cutting ferrule is socketed in the working medium tube road, and the metal protection protector is inserted into the working medium pipeline from the vertical cutting ferrule Working medium in, and the metal protection protector and vertical cutting ferrule sealing are fixed.
In the utility model embodiment, the outer wall of the metal protection protector is arranged with raw material band, the metal protection protector with It is fixed between the vertical cutting ferrule by raw material band sealing.
In the utility model embodiment, the vertical cutting ferrule is externally provided with external screw thread, and the upper end of the metal protection protector is fixed It is arranged with locking nut, the locking nut is equipped with internal screw thread, and the locking nut passes through the internal screw thread and the external screw thread Cooperation is threadedly coupled with the vertical cutting ferrule, is equipped with seal snap ring and card in the locking nut between the metal protection protector Circle.
(3) beneficial effect
Compared with prior art, the utility model has the advantage that
The temperature of refrigeration or heat pump system working medium provided by the embodiment of the utility model measures component comprising lower end closed The metal protection protector of upper end opening and the platinum resistor temperature measuring element for contacting and fixing with the lower end base in the metal protection protector, The signal output end of the platinum resistor temperature measuring element connects more leads, is packaged with sealant in the metal protection protector, described Sealant by the input terminal of the more leads, the signal output end of the platinum resistor temperature measuring element, platinum resistor temperature measuring element, with And metal protection protector is packaged as a whole;Stabilized structure, simple, practical, measurement sensitivity height.
A kind of refrigeration provided by the embodiment of the utility model or heat pump system, including working medium pipeline and be set to the working medium tube Road forms compressor, air cooler, injector, expansion valve, evaporator and the gas-liquid separator of refrigeration or heat pump cycle;The work It is located at the suction port of compressor, compressor outlet, air cooler outlet, injector outlet, expansion valve inlet, evaporator on matter pipeline Entrance and evaporator outlet are equipped with the temperature measurement component of refrigeration or heat pump system working medium as described in the above technical scheme;Institute It states metal protection protector and extends into the working medium of the working medium pipeline and contacted with the working medium, pass through the platinum resistor temperature measuring element and survey The temperature of the working medium is measured, good airproof performance, accuracy is high, is capable of the temperature value of each temperature measuring point of precise measurement, also ensures that temperature Even if still leakproofness is good under hyperbaric environment for measuring cell, system can safely stable continuous service.
Detailed description of the invention
Fig. 1 is the structural representation of the temperature measurement component of a kind of refrigeration of the utility model embodiment or heat pump system working medium Figure;
Fig. 2 is the partial structural diagram of a kind of refrigeration of the utility model embodiment or heat pump system;
Fig. 3 is the schematic diagram of a kind of refrigeration of the utility model embodiment or heat pump system;
In figure: 1: compressor;2: air cooler;3: injector;4: gas-liquid separator;5: expansion valve;6: evaporator;7: temperature Measure component;71: platinum resistor temperature measuring element;72: metal protection protector;73: sealant;74: signal wire;8: lead;9: triplet card Bell and spigot joint;91: horizontal cutting ferrule;92: vertical cutting ferrule;10: locking nut;11: snap ring;12: retainer ring;13: raw material band.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitations of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it is above-mentioned that concrete condition understanding can be regarded The concrete meaning of term in the present invention.
In addition, in the description of the present invention, unless otherwise indicated, " multiple ", " more ", " multiple groups " are meant that two It is a or more than two.
As shown in Figure 1, the utility model embodiment provide it is a kind of refrigeration or heat pump system working medium temperature measurement component 7 comprising the metal protection protector 72 of lower end closed upper end opening and contacted simultaneously with the lower end base in the metal protection protector 72 Fixed platinum resistor temperature measuring element 71, platinum resistor temperature measuring element 71 be used as temperature sensor, it is ensured that platinum resistor temperature measuring element 71 with Metal protection protector 72 comes into full contact with and fixes, furthermore, it is to be ensured that 72 outer diameter of metal protection protector and finish reach sealing and wants It asks, the signal output end of the platinum resistor temperature measuring element 71 connects more leads 8, and more leads 8 connect external circuit, by more The temperature signal of measurement is transferred to external equipment and shown by root lead 8, is packaged with sealant 73 in the metal protection protector 72, Sealant 73 selects the low thermally conductive high-temperature resistant packaging adhesive of high heat resistance, 400 DEG C of heatproof or more, thermal coefficient 0.06W/mk, reduces Interference of the metal protection protector 72 to resistive element, the sealant 73 survey the input terminal of the more leads 8, the platinum resistance Signal output end, platinum resistor temperature measuring element 71 and the metal protection protector 72 of warm element 71 are packaged as a whole, and stabilized structure is resistance to With high sensitivity.
In the utility model embodiment, the metal protection protector 72 uses stainless steel sleeve, sturdy and durable, the stainless steel sleeve Lower end outer surface be in arc surface, without tip, concentrated without stress, and platinum resistor temperature measuring element 71 is convenient for using arc surface Installation, when platinum resistor temperature measuring element 71 is placed on arc surface, finds the center of arc surface accurately automatically.
In the utility model embodiment, the platinum resistor temperature measuring element 71 uses PT100 platinum resistor temperature measuring element 71, selects A grades -200 DEG C~+200 DEG C of effective temperature use scope, allowable error is ± (0.15+0.002t)=± 0.55 DEG C, and t indicates temperature Degree.
In the utility model embodiment, the platinum resistor temperature measuring element 71 is set in the lower end in the metal protection protector 72 At the heart, the platinum resistor temperature measuring element 71 is connected with signal wire 74, axis of the signal wire 74 along the metal protection protector 72 It is arranged vertically upwards, the top of the signal wire 74 forms the signal output end of the platinum resistor temperature measuring element 71.
In the utility model embodiment, the more leads 8 are four, select four-wire system wiring compared with three-wire system and two-wire system It is more accurate and stable.
As shown in Figures 2 and 3, the utility model embodiment additionally provides a kind of refrigeration or heat pump system, including working medium tube Road and compressor 1, air cooler 2, injector 3, the expansion valve 5, steaming that refrigeration or heat pump cycle are formed set on the working medium tube road Device 6 and gas-liquid separator 4 are sent out, when refrigeration or heat pump system are run, CO2It is charged system from 1 inlet of compressor, from compressor The high pressure gaseous CO of 1 outlet output2Work into air cooler 2, in air cooler 2 after heat release cooling as injector 3 Fluid, which enters in injector 3, to be exported after the driving fluid flowed into mixes with from evaporator 6 from the output of 3 diffuser pipe of injector, is gone forward side by side Enter gas-liquid separator 4, after separation liquid CO2Enter 6 endothermic gasification of evaporator after 5 decrease temperature and pressure of expansion valve along with temperature Degree increases, subsequent gaseous state CO2Enter as driving fluid from ejecting port and enters injector 3;Gaseous state CO after separation2Again into Enter 1 entrance of compressor, closed loop realizes a complete refrigeration or heat pump cycle;In order to measure compressor inlet temperature T1, compression Machine outlet temperature T2, air cooler outlet temperature T3, injector outlet temperature T4, expansion valve inlet temperature T5, evaporator inlet temperature T6With evaporator outlet temperature T7, the working medium tube road is located at 1 entrance of compressor, compressor 1 exports, air cooler 2 goes out Mouth, the outlet of injector 3,5 entrance of expansion valve, 6 entrance of evaporator and the outlet of evaporator 6 are equipped with as described in the above technical scheme The temperature of refrigeration or heat pump system working medium measures component 7;The metal protection protector 72 extends into the working medium of the working medium pipeline It is contacted with the working medium, working medium is Trans-critical cycle CO2, the temperature of the working medium is measured by the platinum resistor temperature measuring element 71.? In refrigeration or heat pump system, since the heat-conduction effect of stainless steel tube itself is much larger than inside pipe wall and CO2The heat convection of working medium, Therefore stainless steel outside wall temperature can not accurately reflect the fluid temperature of a certain position in pipe.Therefore, not only to guarantee that experiment is each The temperature sensor of each position need to be inserted into pipeline, connect temperature element directly with fluid by the measurement accuracy of temperature measuring point Touching, simultaneously as system maximum experimental pressure can reach 11.0MPA, even if therefore guaranteeing this thermometry in height again Still leakproofness is good under pressure ring border, can safely carry out experiment test job.Therefore, it can be obtained in order to ensure testing each temperature measuring point Accurate measured value is obtained, the temperature sensor of each position need to be inserted into pipeline, temperature element be made directly to contact with fluid.Together When, guarantee that leakproofness of the system under high-pressure situations is good again.The described temperature measurement component 7 can realize temperature sensor with Fluid directly contacts, not only can be with the temperature value of each temperature measuring point of precise measurement, even if also can ensure that this temperature measurement component 7 in height Still leakproofness is good under pressure ring border, and system can safely stable continuous service.
In the utility model embodiment, for the ease of installing this temperature measurement component 7, the working medium tube road is located at described 1 entrance of compressor, the outlet of compressor 1, the outlet of air cooler 2, the outlet of injector 3,5 entrance of expansion valve, 6 entrance of evaporator and evaporation 6 exit of device is equipped with threeway ferrule fitting 9, and the threeway ferrule fitting 9 includes two horizontal cards positioned at horizontal segment both ends Set 91 and the vertical cutting ferrule 92 for being set to the horizontal segment vertically, further, vertical cutting ferrule 92 is arranged vertically upwards;Described in two Horizontal cutting ferrule 91 is socketed in the working medium tube road, and the metal protection protector 72 is inserted into the working medium tube from the vertical cutting ferrule 92 In the working medium on road, and the metal protection protector 72 and the vertical sealing of cutting ferrule 92 are fixed.
In the utility model embodiment, the outer wall of the metal protection protector 72 is arranged with raw material band 13, and raw material band is liquid Common a kind of assistant product in Pipe installing is used for pipe fitting junction, enhances the airtightness of pipeline junction, and the metal is protected It is fixed between sheath 72 and the vertical cutting ferrule 92 by the raw material band 13 sealing, metal protection protector 72 winds appropriate F4 raw material It is inserted into after band in vertical cutting ferrule 92 until 2mm in horizontal pipeline is protruded into the temperature element position for being located at 72 bottom of metal protection protector It is come into full contact with fluid.
In the utility model embodiment, sealing effect, adapts to hyperbaric environment, the vertical cutting ferrule 92 in order to further increase It is externally provided with external screw thread, the upper end fixing sleeve of the metal protection protector 72 is equipped with locking nut 10, and the locking nut 10 is equipped with interior Screw thread, the locking nut 10 is cooperated by the internal screw thread with the external screw thread to be threadedly coupled with the vertical cutting ferrule 92, institute It states and is equipped with seal snap ring 11 and retainer ring 12 in locking nut 10 between the metal protection protector 72, to ensure sealing performance.
As can be seen from the above embodiments, the utility model is capable of the temperature value of each temperature measuring point of precise measurement, it is ensured that this temperature Even if still leakproofness is good under hyperbaric environment for degree measurement component, system safely stable continuous service.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (10)

1. the temperature of a kind of refrigeration or heat pump system working medium measures component, which is characterized in that including lower end closed upper end opening Metal protection protector and the platinum resistor temperature measuring element for contacting and fixing with the lower end base in the metal protection protector, the platinum resistance The signal output end of temperature element connects more leads, and sealant is packaged in the metal protection protector, and the sealant will be more The input terminal of lead described in root, the signal output end of the platinum resistor temperature measuring element, platinum resistor temperature measuring element and metal coating Set is packaged as a whole.
2. the temperature of refrigeration according to claim 1 or heat pump system working medium measures component, which is characterized in that the metal Protective case uses stainless steel sleeve, and the lower end outer surface of the stainless steel sleeve is in arc surface.
3. the temperature of refrigeration according to claim 1 or heat pump system working medium measures component, which is characterized in that the platinum electricity It hinders temperature element and uses PT100 platinum resistor temperature measuring element.
4. the temperature of refrigeration according to claim 1 or heat pump system working medium measures component, which is characterized in that the platinum electricity It hinders temperature element to be set at the lower end center in the metal protection protector, the platinum resistor temperature measuring element is connected with signal wire, institute The axis vertical that signal wire is stated along the metal protection protector is set up, and the top of the signal wire forms the platinum resistor temperature measuring The signal output end of element.
5. the temperature of refrigeration according to claim 1 or heat pump system working medium measures component, which is characterized in that described in more Lead is four.
6. a kind of refrigeration or heat pump system, refrigeration or heat pump cycle are formed including working medium pipeline and set on the working medium tube road Compressor, air cooler, injector, expansion valve, evaporator and gas-liquid separator;It is characterized in that, the working medium tube road is located at The suction port of compressor, compressor outlet, air cooler outlet, injector outlet, expansion valve inlet, evaporator inlet and evaporator Outlet is equipped with the temperature of the described in any item refrigeration of the claims 1-5 or heat pump system working medium such as and measures component;It is described Metal protection protector is extended into the working medium of the working medium pipeline and is contacted with the working medium, is passed through the platinum resistor temperature measuring element and is measured The temperature of the working medium.
7. refrigeration according to claim 6 or heat pump system, which is characterized in that the working medium is Trans-critical cycle CO2
8. refrigeration according to claim 6 or heat pump system, which is characterized in that the working medium tube road is located at the compression Machine entrance, compressor outlet, air cooler outlet, injector outlet, expansion valve inlet, evaporator inlet and evaporator exit are equal Equipped with threeway ferrule fitting, the threeway ferrule fitting includes positioned at two horizontal cutting ferrules at horizontal segment both ends and vertically set on institute State the vertical cutting ferrule of horizontal segment;Two horizontal cutting ferrules are socketed in working medium tube road, and the metal protection protector is from described Vertical cutting ferrule is inserted into the working medium of the working medium pipeline, and the metal protection protector and the vertical cutting ferrule sealing are fixed.
9. refrigeration according to claim 8 or heat pump system, which is characterized in that the outer wall of the metal protection protector is arranged with Raw material band is fixed between the metal protection protector and the vertical cutting ferrule by raw material band sealing.
10. refrigeration according to claim 9 or heat pump system, which is characterized in that the vertical cutting ferrule is externally provided with external screw thread, The upper end fixing sleeve of the metal protection protector is equipped with locking nut, and the locking nut is equipped with internal screw thread, and the locking nut is logical It crosses the internal screw thread to be threadedly coupled with external screw thread cooperation with the vertical cutting ferrule, be protected in the locking nut with the metal Seal snap ring and retainer ring are equipped between sheath.
CN201821723939.0U 2018-10-23 2018-10-23 Temperature measuring assembly of working medium of refrigeration or heat pump system and refrigeration or heat pump system Active CN209068800U (en)

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CN201821723939.0U CN209068800U (en) 2018-10-23 2018-10-23 Temperature measuring assembly of working medium of refrigeration or heat pump system and refrigeration or heat pump system

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CN201821723939.0U CN209068800U (en) 2018-10-23 2018-10-23 Temperature measuring assembly of working medium of refrigeration or heat pump system and refrigeration or heat pump system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109297209A (en) * 2018-10-23 2019-02-01 中国科学院理化技术研究所 Temperature measuring assembly of working medium of refrigeration or heat pump system and refrigeration or heat pump system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109297209A (en) * 2018-10-23 2019-02-01 中国科学院理化技术研究所 Temperature measuring assembly of working medium of refrigeration or heat pump system and refrigeration or heat pump system

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