CN108663131B - Temperature measuring device - Google Patents
Temperature measuring device Download PDFInfo
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- CN108663131B CN108663131B CN201810344221.9A CN201810344221A CN108663131B CN 108663131 B CN108663131 B CN 108663131B CN 201810344221 A CN201810344221 A CN 201810344221A CN 108663131 B CN108663131 B CN 108663131B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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Abstract
The application discloses temperature measuring device, including thermocouple (4), first test wire (51), second test wire (52), adapter socket (6) and signal acquisition equipment (9), set up the constant temperature equipment in adapter socket (6) both sides. The invention solves the problem of accurately acquiring the temperature signal in a low-pressure environment. On the basis of not changing the hardware configuration of the existing acquisition equipment, a set of socket constant temperature device is designed for the adapter socket (6) to control the temperature inside and outside the copper pin of the adapter socket (6) of the low-pressure bulkhead so as to maintain the temperature in an even and stable temperature environment, the high-precision transmission of temperature test signals in the low-pressure cabin (1) is completed, the flexibility of a test system is enhanced, the test capability of the existing equipment is expanded, and the economic cost is saved.
Description
Technical Field
The application relates to the field of temperature control, in particular to a temperature measuring device.
Background
In the normal-pressure thermal test, the temperature signal is acquired and directly connected into the acquisition equipment through the sensor test wire, and then cold end compensation operation is carried out by the acquisition equipment, so that an accurate temperature indication value is obtained. In the low-pressure test, because the tightness of the low-pressure (1000Pa) environment needs to be maintained, and because the sealing adhesive has volatility in the low-pressure environment, the test cable for acquiring the temperature signal in the test cannot be directly wired at the opening of the cabin wall when the test cable is taken out of the cabin, and the signal transmission can be realized by using the sealing adhesive for sealing.
The structural thermal test in the low-pressure environment needs to acquire signals such as temperature, heat flow and pressure. Wherein, the test wire of heat flow and pressure is copper cable. Temperature testing of different types of tests in a low pressure environment requires different types of thermocouple sensors to be configured. In order to ensure that the test signals of various sensors do not generate extra loss in the transmission process and meet the requirement of tightness in a low-pressure environment, a universal engineering-grade adapter socket is used for the penetration of the test cable for connecting the test cable in the low-pressure cabin with a test lead outside the low-pressure cabin so as to obtain the test signals in the low-pressure environment.
For the sensor with heat flow, pressure and other transmission signals as voltage or current signals, the test cable is a copper wire and a cabin penetrating socket with copper contact pins is used, so that the cabin penetrating test has little influence on the accuracy of the signals. For different types of temperature sensors (thermocouples), if the adapter socket is prepared according to corresponding thermocouple wires, the cost is high, the preparation time is long, and the later installation is time-consuming. If the adapter socket with the copper contact pin is selected, according to the thermocouple temperature measurement principle, when the positive electrode/negative electrode of the thermocouple is connected with the third medium, an extra adapter contact potential can be generated at the connection or the adapter part of the thermocouple test lead and the adapter socket contact pin due to different materials, and the accuracy of a temperature signal can be directly influenced by the extra contact potential in actual measurement.
In order to accurately obtain an accurate value at a temperature measurement point of a test piece in a low-pressure chamber, a temperature compensation point is added at an accessed third medium in a traditional measurement method, and a temperature value can be obtained through a series of table look-up back calculation, so that the accurate measurement of the temperature is realized. The measuring method reduces the flexibility of the channel configuration of the existing equipment, has certain limitation, needs to install a temperature compensation point at the adapter socket, has the risk of easy damage and has lower reliability.
Aiming at the problems of high cost and poor stability of temperature accurate measurement in a low-pressure environment, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a temperature measuring device, which solves the problem of accurately acquiring a temperature signal in a low-pressure environment. On the basis of not changing the hardware configuration of the existing equipment, a set of plug constant temperature device is designed for a single adapter socket. According to the 'law of intermediate conductors' of the thermocouple loop property, the temperature inside and outside the copper contact pin of the low-pressure bulkhead adapter socket is controlled to be maintained in a uniform and stable temperature environment, high-precision transmission of temperature test signals in the low-pressure cabin is completed, the flexibility of a test system is enhanced, the test capability of existing equipment is expanded, and the economic cost is saved.
According to an aspect of an embodiment of the present invention, there is provided a temperature measurement device including a thermocouple, a first test lead, an adaptor socket, a second test lead, and a signal acquisition apparatus. Wherein one end of the first test lead is connected with the thermocouple; one end of the second test lead is connected with the signal acquisition equipment; a conductor is arranged in the adapter socket, one end of the conductor is connected with the other end of the first test lead, the other end of the conductor is connected with the other end of the second test lead, and an electric signal generated by the thermocouple is transmitted to the signal acquisition equipment. In addition, the device also comprises a first constant temperature device and a second constant temperature device. The first constant temperature device is arranged on one side of the adapter socket and is arranged around one end of the conductor; the second thermostatic device is arranged on the other side of the adapter socket and surrounds the other end of the conductor. The invention can ensure that the temperature at the two end nodes is uniform when the third homogeneous conductor is connected into the thermocouple loop, thereby eliminating the influence of the copper contact pin of the cabin-through adapter socket on the test precision and solving the problem of temperature signal transmission and acquisition in a low-pressure environment.
Optionally, the first and second thermostatic devices comprise: an annular nylon inner assembly configured to surround the conductor; an annular outer nylon component, a portion of the outer nylon component configured to surround the inner nylon component; and the thermal insulation material is filled between the nylon inner component and the nylon outer component. The nylon material is light, and easy processing for the metal material, has lower heat conductivity under the prerequisite that satisfies equal intensity requirement, can play better constant temperature effect.
Optionally, the temperature measuring device further comprises a low-pressure chamber, a through hole is arranged on a wall of the low-pressure chamber, and the thermocouple and the first test lead are arranged in the low-pressure chamber; the adapter socket is arranged by penetrating through the through hole; and the second test lead and the signal acquisition equipment are arranged outside the low-pressure cabin. The low-pressure chamber provides a low-pressure environment for the system.
Optionally, the nylon outer assembly is secured to a low pressure bulkhead flange by countersunk screws, the low pressure bulkhead flange serving to secure the adaptor socket.
Optionally, a heat insulating pad and a rubber pad are also interposed between the nylon outer assembly and the low pressure bulkhead flange. The heat insulation effect of the system is enhanced by the heat insulation pad and the rubber pad.
Optionally, the outer nylon component is formed by splicing two outer nylon components, and wherein an inner surface of one portion of the outer nylon component is formed with a recess for receiving the inner nylon component and the insulation material, and an inner surface of another portion of the outer nylon component is formed with a boss extending beyond the inner nylon component and the insulation material. Because the test cable led out from the adapter socket is suspended for a long time, the phenomenon that the connection part of the cable and the insertion pin of the adapter socket is disconnected or the test lead is disconnected can occur under the influence of the dead weight of the cable, so that the test loop is broken. The binding off at subassembly top outside the nylon can play certain degree's supporting role to the test cable, reduces the possibility that above-mentioned problem takes place by a wide margin.
Optionally, a through hole is formed in a central position of the nylon outer assembly, and a flange is formed around the through hole at a top portion of the nylon outer assembly, and the thermostat further comprises a nylon clamping ring disposed around the flange. And eccentricity is easily formed at the wire outlet holes of the nylon outer assembly and the adapter socket, so that a gap is generated. Therefore, the nylon outer assembly is limited and clamped through the nylon clamping ring. Meanwhile, the nylon is used for clamping the circular ring, so that a relatively closed space is formed in the adapter socket, the convection effect formed by the interior of the adapter socket and the external environment is reduced, and the heat insulation effect is enhanced.
Optionally, the abutment surface of the nylon clamping ring intersects the abutment surface of the nylon outer member in a criss-cross pattern, and the nylon clamping ring is configured to be screwed to the upper surface of the nylon outer member.
Optionally, the first constant temperature device and the second constant temperature device are respectively arranged on one side of the adapter socket located in the low-pressure chamber and one side of the adapter socket located outside the low-pressure chamber, and the constant temperature devices ensure that the inner temperature and the outer temperature of the adapter socket conductor are consistent.
Optionally, the temperature measuring device further includes a cold end compensation device disposed on the second test wire, and configured to correct an electrical signal of the second test wire.
In the embodiment of the invention, the temperature of the joint of the first test lead in the low-pressure cabin and the copper pin of the adapter socket is ensured to be consistent with the temperature of the joint of the second test lead outside the low-pressure cabin and the copper pin of the adapter socket by arranging the constant temperature device on the adapter socket. Therefore, the invention can ensure that the temperature at the nodes at two ends of the thermocouple loop is uniform when the third homogeneous conductor is connected in the thermocouple loop, thereby eliminating the influence of the copper contact pin of the cabin-through adapter socket on the test precision and solving the problem of temperature signal transmission and acquisition in a low-pressure environment. Therefore, the invention realizes the technical effect of accurate temperature measurement on the basis of not changing the hardware configuration of the existing acquisition equipment, further solves the technical problem of accurate temperature measurement in a low-pressure environment, improves the system stability and reduces the cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a block diagram of a temperature measuring device according to an embodiment of the present invention;
FIG. 2 illustrates a top view of a thermostat according to an embodiment of the present patent application; and
figure 3 shows a cross-section of a thermostatic device according to an embodiment of the present patent application;
reference numerals:
1, a low-pressure chamber; 2, a guide rail; 3, testing the part; 4, a thermocouple; 51 a first test lead; 52 a second test lead; 6, a patch jack; 7 a low pressure bulkhead flange; 8, plugging a plug; 9 signal acquisition equipment; 10 nylon clamping ring; 11 a nylon outer component; 12, a heat insulating material; 13 an inner nylon component; 14 heat insulation pad; 15, a rubber pad;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Example 1
Fig. 1 shows a block diagram of a temperature measuring device according to an embodiment of the present patent application. As shown in fig. 1, the present embodiment provides a temperature measuring device, which includes a thermocouple 4, a first test lead 51, an adapter socket 6, a second test lead 52, and a signal acquisition device 9. Wherein one end of the first test wire 51 is connected to the thermocouple 4; one end of the second test wire 52 is connected with the signal acquisition device 9; a conductor is arranged in the adapter socket 6, one end of the conductor is connected with the other end of the first test lead, the other end of the conductor is connected with the other end of the second test lead 52, and the electric signal generated by the thermocouple 4 is transmitted to the signal acquisition equipment 9. The temperature measuring device also comprises a first thermostat device and a second thermostat device (not shown in the figure), wherein the first thermostat device is arranged on one side of the adapter socket 6 and is arranged around one end of the conductor; a second thermostatic device is arranged on the other side of the adapter socket 6 and around the other end of the conductor.
Thus, with the above arrangement, the conductor in the adaptor socket 6 may be a third, homogeneous conductor different from the two conductors constituting the thermocouple 4. The first and second thermostats described above ensure that the temperature T1 at the junction of the first test lead 51 with the conductor of the patch socket 6 and the temperature T2 at the junction of the second test lead 52 with the conductor of the patch socket 6 remain the same. Therefore, due to the arrangement of the first constant temperature device and the second constant temperature device, the temperature at the nodes of the two ends of the loop of the thermocouple 4 can be ensured to be uniform when the third homogeneous conductor is connected, so that the influence of the conductor in the cabin-through adapter socket on the test precision can be eliminated, and the problem of temperature signal transmission and acquisition in a low-pressure environment is solved.
Alternatively, the conductors in the adapter socket 6 may be copper pins, but other conductors may be selected as long as the electrical signals generated by the thermocouple can be transmitted.
Furthermore, fig. 2 shows a top view of a thermostat device according to an embodiment of the present patent application, and fig. 3 further shows a cross-sectional view of a thermostat device according to an embodiment of the present patent application. Wherein the thermostat may be the first thermostat and/or the second thermostat as described above.
Referring to fig. 2 and 3, the first and second thermostatic devices may include: an annular nylon inner assembly 13 configured to surround the conductor; an annular nylon outer component 11, a portion of the nylon outer component 11 being configured to surround the nylon inner component 13; and a thermal insulation material 12 filled between the nylon inner component 13 and the nylon outer component 11. The nylon material is light, and easy processing for the metal material, has lower heat conductivity under the prerequisite that satisfies equal intensity requirement, can play better constant temperature effect. In addition, the heat insulation material filled between the nylon inner and outer blocks can effectively reduce the heat exchange phenomenon between the adapter plug and the outside due to the good heat insulation property of the heat insulation material.
Alternatively, referring to fig. 2 and 3, the nylon outer member 11 is formed by splicing two nylon outer members, and wherein an inner surface of one portion of the nylon outer member 11 is formed with a recess for accommodating the nylon inner member 13 and the thermal insulation material 12, and an inner surface of the other portion of the nylon outer member 11 is formed with a boss extending beyond the nylon inner member 13 and the thermal insulation material 12. With the above structure, the nylon inner component 13 and the thermal insulation material 12 can be accommodated in the recess by forming the recess on a part of the inner surface of the nylon outer component 11. Thereby, the thermostat device is easy to assemble, and simultaneously, an effective thermostatic effect can be achieved.
Alternatively, as shown in fig. 2 and 3, a through hole is formed at a central position of the nylon outer member 11, and a flange is formed around the through hole at a top of the nylon outer member 11, and the thermostat device further includes a nylon clamping ring 10 disposed around the flange. Because the test cable led out from the adapter socket 6 is suspended for a long time, the phenomenon that the connection part of the cable and the insertion pin of the adapter socket 6 is disconnected or the test lead is disconnected can occur under the influence of the dead weight of the cable, so that the test loop is broken. The binding off at 11 tops of outer subassembly of nylon can play certain supporting role to the test cable, reduces the possibility that above-mentioned problem takes place by a wide margin. The wire outlet holes of the nylon outer component 11 and the adapter socket 6 are easy to form eccentricity, so that a gap is generated. Therefore, the nylon outer assembly 11 is limited and clamped by the nylon clamping ring 10. Meanwhile, the nylon is used for clamping the circular ring 10, so that a relatively closed space is formed in the adapter socket 6, the convection effect formed by the interior of the adapter socket 6 and the external environment is reduced, and the heat insulation effect is enhanced.
Optionally, the abutting surface of the nylon clamping ring 10 crosses the abutting surface of the nylon outer member 11 in a crisscross shape, and the nylon clamping ring 10 is configured to be screwed to the upper surface of the nylon outer member 11. Thus, the temperature insulation effect of the constant temperature device can be further enhanced through the arrangement.
Optionally, the temperature measuring device further comprises a low-pressure chamber 1, a through hole is arranged on a wall of the low-pressure chamber 1, and the thermocouple 4 and the first test lead are arranged in the low-pressure chamber 1; the adapter socket 6 is arranged through the through hole; and the second test conductor 52 and the signal acquisition device 9 are disposed outside the low-pressure chamber 1.
With continued reference to FIG. 1, FIG. 1 shows a schematic diagram of a testing system in a low pressure environment. The test piece 3 is mounted on the guide rail 2 in advance and placed in the low-pressure chamber 1. And 4, a thermocouple is fixed on the test piece 3 through a welding or pasting process. The thermocouple 4 is connected with a first test lead 51 which is laid in the cabin, and the first test lead 51 is connected with the adapter socket 6 through a gap of the low-pressure cabin wall flange 7. One end of the second test wire 52 outside the cabin is connected with the adapter socket 6, and the other end is connected with the signal acquisition equipment 9 through the plug 8, so that high-quality acquisition of the temperature test signal in the low-pressure cabin is realized.
The low-pressure chamber is in a laboratory environment, the influence of the heat radiation effect on the rotary connector is very little, and the influence can be avoided. The design of this application embodiment makes the outer chunk of nylon can form comparatively confined space, can show the convection action that reduces patchplug and outside air. Meanwhile, the heat insulation material filled between the nylon inner and outer blocks can effectively reduce the heat exchange phenomenon between the adapter plug and the outside due to the good heat insulation property of the heat insulation material. The two heat action modes which mainly affect the temperature change at the internal contact pin of the adapter socket can be effectively controlled by the device, so that the temperature at the internal contact pin of the adapter socket outside the low-pressure cabin can maintain higher consistency for a long time (more than 3600 s).
Aiming at the existing low-pressure environment test system, a constant temperature device for the adapter plug 6 is designed on the basis of the existing low-pressure bulkhead flange 7 and adapter plug 6 interface on the bulkhead of the low-pressure chamber 1, so as to maintain the temperature consistency of the connection positions of copper pins inside and outside the low-pressure chamber 1 and the thermocouple 4 test lead. So that the electrical signals collected by the signal acquisition device 9 can be made more accurate.
In addition, although the present embodiment describes the technical solution of the present embodiment with a low-pressure environment testing system as a background, it should be clear to those skilled in the art that the temperature measuring device described in the present embodiment is also applicable to other scenarios. As long as the adapter socket is used to relay the electrical signal generated by the thermocouple, there is a problem that the third homogeneous conductor in the adapter socket causes interference of the electrical signal of the thermocouple. The technical scheme of the embodiment of the invention is suitable for solving the technical problems.
Alternatively, and as shown in fig. 2 and 3, the nylon outer component 11 is secured to the low pressure bulkhead flange 7 by countersunk screws. Therefore, aiming at the existing low-pressure environment test system, a constant temperature device for the adapter plug is designed on the basis of the existing flange and the adapter plug interface on the bulkhead of the low-pressure cabin, so as to maintain the consistency of the temperature of the connection part of the copper contact pins and the thermocouple test lead in and out of the low-pressure cabin. The low pressure bulkhead flange 7 thus serves to secure the adaptor socket 6.
Optionally, a heat insulating mat 14 and a rubber mat 15 are also interposed between the nylon outer assembly 11 and the low pressure bulkhead flange 7. In the low-pressure environment temperature measuring system, the adapter socket 6 is directly arranged on the flange 7 of the existing low-pressure chamber. In the installation, install between the two with heat insulating mattress 14 and rubber pad 15 additional, rubber pad 15 is used for realizing sealedly, and heat insulating mattress 14 is used for avoiding adapter socket 6 to pass through the heat dissipation of low-pressure bulkhead ring flange 7, can reduce external environment to the influence of adapter socket 6 temperature to minimumly. Thus, the heat insulating mat 14 and the rubber mat 15 enhance the heat insulating effect of the system.
Specifically, the plug thermostatic device designed by the invention is composed of a nylon outer assembly 11, a nylon inner assembly 13, a nylon clamping ring 10 and a heat insulation material 12 filled in the nylon clamping ring, and is directly installed on the conventional adapter socket 6 in an assembly splicing mode, so that the quick installation can be realized.
Firstly, the heat insulation material 12 is filled in a cavity formed by the outer nylon component 11 and the inner nylon component 13, the outer nylon component 11 and the inner nylon component 13 are assembled together, the bottom of the outer nylon component 11 is fastened by using countersunk head screws, and then the whole body is screwed on the plug of the low-pressure chamber flange 7. On the basis, the butt joint surfaces of the nylon clamping ring 10 and the nylon outer component 11 are combined in a cross shape and are screwed on the upper surface of the nylon outer component 11.
The adapter plug 6 is of a symmetrical structure, so that plug constant temperature devices are respectively arranged at the plug inside and the plug outside the low-pressure chamber 1, the temperature of the joint of the test lead inside the low-pressure chamber 1 and the copper pin of the adapter socket can be ensured to be consistent with the temperature of the joint of the test lead outside the low-pressure chamber 1 and the copper pin of the adapter socket, and the temperature can be accurately measured.
The embodiment is applied to the test under the existing low-pressure environment, can stably and normally work under the low-pressure environment, realizes the acquisition of thermocouple parameters, obtains the temperature precision in the low-pressure cabin 1 within 1 per thousand, and realizes the control and monitoring of the thermal characteristic test based on the temperature parameters on the basis.
Optionally, the first thermostatic device and the second thermostatic device are respectively arranged on one side of the adapter socket 6 located in the low-pressure chamber 1 and one side of the adapter socket 6 located outside the low-pressure chamber 1, and the thermostatic devices ensure that the inner temperature and the outer temperature of the conductor of the adapter socket 6 are consistent.
Optionally, the temperature measuring device further comprises a cold end compensation device disposed on second test conductor 52 for correcting the electrical signal of second test conductor 52. Therefore, a temperature compensation point is added at the third medium which is accessed, and a temperature value can be obtained through a series of table look-up back calculation, so that the accurate measurement of the temperature is realized.
Through the scheme disclosed by the embodiment, the thermostatic device is configured on the adapter socket 6, the temperature of the joint of the first test wire and the copper pin of the adapter socket 6 in the low-pressure chamber 1 is ensured to be consistent with the temperature of the joint of the second test wire 52 and the copper pin of the adapter socket 6 outside the low-pressure chamber 1, the technical effect of accurate temperature measurement is realized on the basis of not changing the hardware configuration of the existing acquisition equipment, the technical problem of accurate temperature measurement in a low-pressure environment is solved, the cost is reduced, and the system stability is improved.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
In addition, the above-mentioned serial numbers of the embodiments of the present application are merely for description, and do not represent the merits of the embodiments. In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A temperature measuring device comprises a thermocouple (4), a first test lead (51), a transfer socket (6), a second test lead (52) and a signal acquisition device (9), wherein one end of the first test lead (51) is connected with the thermocouple (4); one end of the second test lead (52) is connected with the signal acquisition equipment (9); a conductor is arranged in the adapter socket (6), one end of the conductor is connected with the other end of the first test lead (51), the other end of the conductor is connected with the other end of the second test lead (52), and the electric signal generated by the thermocouple (4) is transmitted to the signal acquisition equipment (9), and the adapter socket is characterized by further comprising a first constant temperature device and a second constant temperature device, wherein the first constant temperature device is arranged on one side of the adapter socket (6) and is arranged around one end of the conductor; and the second thermostat is provided on the other side of the adapter socket (6) and around the other end of the conductor.
2. The temperature measurement device of claim 1, wherein the first and second thermostatic devices comprise: an annular nylon inner assembly (13) configured to surround the conductor; an annular outer nylon component (11), a portion of the outer nylon component (11) being configured to surround the inner nylon component (13); and the thermal insulation material (12) is filled between the nylon inner component (13) and the nylon outer component (11).
3. The temperature measuring device according to claim 2, further comprising a low pressure chamber (1), wherein a first through hole is provided in a wall of the low pressure chamber (1), wherein the thermocouple (4) and the first test wire (51) are provided in the low pressure chamber (1); the adapter socket (6) penetrates through the through hole; and the second test wire (52) and the signal acquisition device (9) are arranged outside the low-pressure chamber (1).
4. A temperature measuring device according to claim 3, characterized in that the nylon outer component (11) is fixed to the flange (7) of the low pressure bulkhead by means of countersunk screws.
5. A temperature measuring device according to claim 4, characterized in that a thermal insulating mat (14) and a rubber mat (15) are also interposed between said nylon outer assembly (11) and said flange (7).
6. The temperature measuring device according to claim 5, characterized in that the outer nylon component (11) is spliced by two outer nylon splices, and the inner surface of one part of the outer nylon component (11) is formed with a recess for accommodating the inner nylon component (13) and the insulation material (12), and the inner surface of the other part of the outer nylon component (11) is formed with a boss extending beyond the inner nylon component (13) and the insulation material (12).
7. The temperature measuring device according to claim 6, wherein: a second through hole is formed at a central position of the nylon outer member (11), and a flange (111) is formed at a top portion of the nylon outer member (11) around the second through hole, and the thermostat device further includes: a nylon gripping ring (10) disposed around the flange (111).
8. The temperature measuring device according to claim 7, wherein: the butt joint surface of the nylon clamping ring (10) and the butt joint surface of the nylon outer component (11) are crossed in a crisscross mode, and the nylon clamping ring (10) is configured to be screwed on the upper surface of the nylon outer component (11).
9. The temperature measuring device according to claim 8, wherein:
the first constant temperature device and the second constant temperature device are respectively arranged on one side of the adapter socket (6) located in the low-pressure chamber (1) and one side of the adapter socket located outside the low-pressure chamber (1).
10. Temperature measuring device according to claim 1, further comprising cold end compensation means arranged on the second test conductor (52) for correcting the electrical signal of the second test conductor (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810344221.9A CN108663131B (en) | 2018-04-17 | 2018-04-17 | Temperature measuring device |
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|---|---|---|---|
| CN201810344221.9A CN108663131B (en) | 2018-04-17 | 2018-04-17 | Temperature measuring device |
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| CN108663131A CN108663131A (en) | 2018-10-16 |
| CN108663131B true CN108663131B (en) | 2020-05-22 |
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| CN108663131A (en) | 2018-10-16 |
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