Multi-point thermocouple mounting assembly and multi-point thermocouple measuring device

Abstract

The present invention provides a multi-point thermocouple mounting assembly, comprising a sleeve rod (21), the sleeve rod (21) being used to receive a plurality of wires (7) and fix a thermocouple probe (8), the mounting assembly further comprising a mounting base (19) sleeved on the sleeve rod (21), a sealing ferrule (16), and a sealing ring between the mounting base (19) and the sealing ferrule (16), the mounting base (19) being configured to be fixed on a container (1) to be measured, the sealing ferrule (16) being capable of being threadedly connected to the mounting base (19) so that when the sealing ferrule (16) is threadedly connected to the mounting base (19), the sealing ring is clamped on the outer peripheral surface of the sleeve rod (21). The present invention also provides a multi-point thermocouple measuring device (2). The multi-point thermocouple mounting assembly according to the present invention has improved sealing performance and is capable of orienting or adjusting the direction of the probe.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring devices, and in particular to a multi-point thermocouple mounting assembly and a multi-point thermocouple measuring device. Background Art

[0002] Thermocouples are commonly used temperature measuring elements in temperature measurement instruments. They can directly measure temperature and convert the temperature signal into a thermoelectromotive force (EMF). This signal is then converted into the temperature of the measured medium via an electrical instrument. Thermocouples offer many advantages, including simple structure, ease of manufacture, a wide measurement range, high accuracy, low inertia, and easy remote transmission of output signals. They are widely used to measure the temperature of gases or liquids within containers or pipelines. Multi-point thermocouples are often used when the measurement application requires simultaneous measurement of temperature parameters at multiple locations or multiple measurements at a single location.

[0003] A multi-point thermocouple measurement device typically includes multiple thermocouples, each equipped with an interface assembly and wires. The interface assembly is electrically connected to the wires of each thermocouple to connect the thermocouple to an electronic device, thereby processing the electrical signals generated by the thermocouples to generate a temperature value representing the local temperature of the measured point. The interface assembly includes an electrical plug to facilitate plug-in connection of the multi-point thermocouple measurement device to the electronic device. However, the multi-wire structure of the multi-point thermocouple measurement device poses challenges to the sealed installation of the multi-point thermocouples.

[0004] Furthermore, traditional multi-point thermocouple measurement devices cannot guarantee the probe's orientation, or even know the probe's orientation within the container. In extreme cases, the probe may be facing away from the desired measurement location, which can lead to severe measurement lag and severely affect the measurement results. In particular, certain applications require specific orientation requirements for the measurement device's probe. For example, when measuring the temperature field of a jet ejected within a container, it is expected that each thermocouple probe in a multi-point thermocouple measurement device is positioned toward the nozzle. Therefore, the ability to accurately orient and adjust the probe orientation of a multi-point thermocouple measurement device becomes essential. Summary of the Invention

[0005] The object of the present invention is to at least partially overcome the defects of the prior art and provide a multi-point thermocouple mounting assembly, which can improve the sealing performance of a multi-point thermocouple measuring device.

[0006] Another object of the present invention is to provide a multi-point thermocouple mounting assembly that can accurately orient the direction of a probe in an unmounted state and can adjust the direction of the probe in an mounted state.

[0007] Another object of the present invention is to provide a multi-point thermocouple measuring device with higher reliability and higher measurement accuracy.

[0008] To achieve the above purpose or one of the purposes, the technical solutions of the present invention are as follows:

[0009] A multi-point thermocouple mounting assembly includes a sleeve rod, the sleeve rod is used to receive multiple wires and fix thermocouple probes. The mounting assembly also includes a mounting base mounted on the sleeve rod, a sealing ferrule, and a sealing ring between the mounting base and the sealing ferrule. The mounting base is configured to be fixed on a container to be tested, and the sealing ferrule can be threadedly connected to the mounting base so that when the sealing ferrule is threadedly connected to the mounting base, the sealing ring is clamped on the outer circumferential surface of the sleeve rod.

[0010] According to a preferred embodiment of the present invention, the sealing ring includes an expansion ring and a tapered retaining ring, the tapered retaining ring has different inner diameters at both ends along the direction of the sleeve rod, and the mounting base has an inner surface that abuts against the conical surface of the tapered retaining ring; the expansion ring is located on the side with the larger inner diameter of the tapered retaining ring, and the diameter of the expansion ring is smaller than the inner diameter of the end with the larger inner diameter, and the expansion ring is configured to wedge into the tapered retaining ring when the sealing sleeve is threadedly connected to the mounting base.

[0011] According to a preferred embodiment of the present invention, the mounting assembly further comprises an end cap, and the end cap covers one end of the mounting assembly.

[0012] According to a preferred embodiment of the present invention, the mounting assembly further comprises an additional ferrule, which is welded and fixed to the end of the sleeve rod away from the thermocouple probe, and the additional ferrule has a hollow through hole; a first seal, a second seal and an intermediate seal sandwiched between the first seal and the second seal are arranged in the hollow through hole, and the first seal, the second seal and the intermediate seal respectively have a plurality of holes for passing a plurality of wires; wherein the end cap is screwed onto the additional ferrule so that the first seal, the intermediate seal and the second seal are clamped between the end cap and the additional ferrule.

[0013] According to a preferred embodiment of the present invention, the intermediate seal is a seal made of graphite, and / or the first seal and the second seal are seals made of metal.

[0014] According to a preferred embodiment of the present invention, the additional ferrule is configured to be threadedly connected to the sealing ferrule.

[0015] According to a preferred embodiment of the present invention, the end cap has an opening for extending the wire.

[0016] According to a preferred embodiment of the present invention, the sleeve rod includes a plurality of through holes, and the plurality of through holes are configured for extension of thermocouple probes.

[0017] According to a preferred embodiment of the present invention, the mounting assembly further comprises a gasket, and the gasket is used to seal the connection between the mounting base and the container to be tested.

[0018] According to another aspect of the present invention, a multi-point thermocouple measurement device is provided. The multi-point thermocouple measurement device includes the multi-point thermocouple mounting assembly as described above.

[0019] The multi-point thermocouple mounting assembly according to the present invention includes components such as an end cap, a first seal, an intermediate seal, a second seal, an additional ferrule, a sealing ferrule, an expansion ring, a tapered retaining ring, a mounting base, a gasket, and a sleeve. The combination of these components achieves different levels of sealing, as described in detail below. First, the multi-point thermocouple mounting assembly of the present invention utilizes a sleeve to secure the thermocouple probe. The thermocouple wires extend from the sleeve and connect to an external interface assembly, which in turn connects to the thermocouple plug. To prepare for temperature measurement, the mounting base is first threaded onto the container to be measured, and a gasket is placed between the mounting base and the container to be measured. This achieves a first level of sealing, sealing the container to be measured from the outside air. Secondly, operate the sleeve rod that has been pre-welded with an additional ferrule and fixed with the thermocouple probe and wire, and pass the wire through the second seal, the middle seal and the first seal in sequence, and then place the second seal, the middle seal and the first seal in the hollow through hole of the additional ferrule in sequence, and then put the end cap on, screw the end cap on the additional ferrule, and the tightening of the end cap and the additional ferrule makes the first seal and the second seal tightly clamp the middle seal. Since the middle seal is made of deformable graphite material, the middle seal tightly clamps the wire, that is, the hole of the middle seal is tightly fitted with the wire, and the three seals are tightened in the hollow through hole, so that the three seals are close to the inner wall of the hollow through hole, which realizes the second level of sealing, that is, the gas or liquid from the container to be tested can flow along the inside of the sleeve rod to the additional ferrule, but cannot pass through the gap between the middle through hole and the seal, nor through the gap between the wire and the middle seal, and therefore cannot leak. Again, the sealing ferrule is screwed onto the additional ferrule, the expansion ring and the tapered clamping ring are sleeved on the sleeve rod, and then the combination of the end cap, the first seal, the intermediate seal, the second seal, the additional ferrule, the sealing ferrule and the sleeve rod (including the expansion ring and the tapered clamping ring) is inserted into the container to be tested through the aforementioned installed mounting base, so that the thermocouple probe is inserted into the specified position in the container to be tested, and the direction of the thermocouple probe is oriented, and then the sealing ferrule is screwed onto the mounting base. During the screwing process, the sealing ferrule presses against the expansion ring, so that the expansion ring is wedged into the tapered clamping ring, and the clamping force between the inner surface of the mounting base and the sealing ferrule and the mounting base is utilized, so that the expansion ring and the tapered clamping ring are tightly clamped between the outer circumferential surface of the sleeve rod and the inner surface of the mounting base, thereby achieving the third level of sealing, that is, the gas or liquid from the container to be tested cannot leak through the gap between the outer circumferential surface of the sleeve rod and the inner surface of the mounting base.

[0020] Thus, it can be seen that the thermocouple mounting assembly of the present invention is supplemented with a sealing structure at every possible leakage location. In particular, the structure using the first seal, the intermediate seal (graphite), and the second seal, as well as the structure using the expansion ring and the tapered retaining ring, provides a strong seal. Therefore, the thermocouple mounting assembly of the present invention can improve the sealing performance of a multi-point thermocouple measuring device.

[0021] It should be noted that the aforementioned additional ferrule, sealing ferrule and mounting base are all structures with threads at both ends. Both ends of the additional ferrule have external threads, one end of the sealing ferrule is internal threaded and the other end is external threaded, and one end of the mounting base is internal threaded and the other end is external threaded. When the thermocouple mounting assembly is in the installed state, the end cap is screwed to the additional ferrule, the sealing ferrule is screwed to the mounting base, and the mounting base is screwed to the container to be tested, but the additional ferrule and the sealing ferrule do not need to be completely screwed together. This is because, as mentioned above, before the aforementioned assembly is inserted into the container to be tested, the sealing ferrule is completely screwed onto the additional ferrule. However, after the aforementioned assembly is inserted into the container to be tested, the operator uses a wrench to rotate the sealing ferrule to screw it onto the mounting base. During the operation, the components of the assembly except the sealing ferrule need to be kept stationary (because the direction and external position of the thermocouple probe have been set at this time). Therefore, as the sealing ferrule is screwed onto the mounting base, the sealing ferrule gradually loosens from the additional ferrule. The ideal state is that after the sealing ferrule is connected to the mounting base, the sealing ferrule is not completely detached from the additional ferrule, that is, the sealing ferrule is connected to the additional ferrule but the two are not completely screwed together. This state does not affect the sealing performance, because the leakage along the outer circumference of the sleeve rod has been suppressed by the expansion ring and the tapered clamping ring. Therefore, even if there is a gap between the outer circumference of the sleeve rod and the sealing ferrule and between the sealing ferrule and the additional ferrule, it will not cause leakage.

[0022] As previously mentioned, the orientation of the thermocouple probe can be oriented after the aforementioned assembly is inserted into the container to be tested, and the orientation of the thermocouple probe can also be adjusted after the mounting assembly is installed by loosening the connection between the sealing sleeve and the mounting base and then rotating the aforementioned assembly. Therefore, the multi-point thermocouple mounting assembly of the present invention can accurately orient the probe in the unmounted state and adjust the probe's orientation in the mounted state.

[0023] The multi-point thermocouple measuring device of the present invention has improved sealing performance by adopting the aforementioned mounting assembly, and can accurately orient the thermocouple probes, thereby having higher reliability and higher measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A diagram showing the installation status of a multi-point thermocouple measuring device and a container to be measured according to an embodiment of the present invention;

[0025] Figure 2 is an overall schematic diagram of a multi-point thermocouple installation assembly according to an embodiment of the present invention;

[0026] Figure 3 is an exploded cross-sectional view of a multi-point thermocouple mounting assembly according to an embodiment of the present invention;

[0027] Figure 4 An enlarged cross-sectional view of an end cap and an additional ferrule portion of a multi-point thermocouple mounting assembly according to an embodiment of the present invention; and

[0028] Figure 5 Schematic diagram of a container seat of a container to be tested according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] Below in conjunction with the accompanying drawings, exemplary embodiments of the present invention are described in detail, wherein the same or similar reference numerals represent the same or similar elements. In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may also be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the drawings.

[0030] According to the overall concept of the present invention, a multi-point thermocouple mounting assembly is provided, comprising a sleeve rod for receiving a plurality of wires and fixing a thermocouple probe, the mounting assembly further comprising a mounting base sleeved on the sleeve rod, a sealing ferrule, and a sealing ring between the mounting base and the sealing ferrule, the mounting base being configured to be fixed to a container to be tested, the sealing ferrule being threadably connected to the mounting base such that the sealing ring is clamped onto the outer circumferential surface of the sleeve rod when the sealing ferrule is threadably connected to the mounting base.

[0031] Figure 1 FIG. 1 is a diagram showing the installation state of a multi-point thermocouple measuring device and a container to be measured according to an embodiment of the present invention, as shown in FIG. Figure 1 As shown, the multi-point thermocouple measuring device 2 is installed on the container 1 to be tested. The container 1 to be tested has a container wall and a diffuser 3 arranged on the top of the container wall. A nozzle 4 is provided at the lower end of the diffuser 3. The diffuser 3 is used to pass steam, for example, from the outside into the container 1 to be tested. The steam is uniformly introduced into the container 1 to be tested through the diffuser 3, thereby reducing vibration and playing a role in silencing. Figure 1 As can be seen from the figure, the nozzle 4 faces the outer wall of the container 1 to be tested. Therefore, in order to more accurately obtain the parameters in the container 1 to be tested, it is advantageous that the thermocouple probe 8 of the multi-point thermocouple measuring device 2 should face the nozzle 4. Regarding the installation of the multi-point thermocouple measuring device 2, a container seat 31 can be set on the container 1 to be tested, such as Figure 5As shown, the container seat 31 for receiving the multi-point thermocouple measuring device 2 can be welded to the wall of the container 1 to be measured, and the multi-point thermocouple mounting assembly described later is installed in the container seat 31. Specifically, a mounting hole 32 is provided in the center of the container seat 31, and the side wall of the mounting hole 32 has a threaded portion 33. The mounting base 19 of the multi-point thermocouple mounting assembly described later is mounted in the container seat 31 through the threaded portion.

[0032] In order to provide a better sealing effect and ensure that the thermocouple probe 8 is facing the nozzle 4, the multi-point thermocouple installation assembly provided in the embodiment of the present invention includes an end cap 11, a first seal 12, an intermediate seal 13, a second seal 14, an additional ferrule 15, a sealing ferrule 16, an expansion ring 17, a tapered retaining ring 18, a mounting base 19, a gasket 21 and a sleeve rod 21, as shown in FIG. Figure 2-3 Also shown are the thermocouple plug 5, interface assembly 6, wire 7, and thermocouple probe 8. The thermocouple probe 8 is connected to the wire 7, through which the measurement signal of the thermocouple probe 8 is transmitted. The wire 7 is connected to the interface assembly 6, which is connected to the thermocouple plug 5. The sleeve rod 21 is used to receive the multiple wires 7 and secure the thermocouple probe 8. The sleeve rod 21 includes multiple through-holes configured to allow the thermocouple probe 8 to extend.

[0033] The mounting base 19, the sealing ferrule 16, and the sealing ring between the mounting base 19 and the sealing ferrule 16 are mounted on a sleeve rod 21. The mounting base 19 is configured to be fixed to the container 1 to be tested, for example, to the container seat 31 of the container 1 to be tested. The mounting base 19 has an external thread on the end proximal to the container 1 to be tested and an internal thread on the opposite end. Similarly, the sealing ferrule 16 has an external thread on the end proximal to the container 1 to be tested and an internal thread on the opposite end. The sealing ferrule 16 can be threadedly connected to the mounting base 19, such that the sealing ring is clamped against the outer circumferential surface of the sleeve rod 21 when the sealing ferrule 16 and the mounting base 19 are threadedly connected. In addition, a gasket 20 is disposed between the mounting base 19 and the container 1 to seal the connection between the mounting base 19 and the container 1 to be tested.

[0034] Specifically, the sealing ring includes an expansion ring 17 and a conical retaining ring 18. The conical retaining ring 18 has a truncated conical profile. It is a hollow ring and the inner circumference is also truncated conical. The conical retaining ring 18 has different inner diameters at both ends along the direction of the sleeve rod 21. The mounting base 19 has an inner surface that abuts against the conical surface of the conical retaining ring 18, for example, it has a shape that matches the shape of the conical surface of the conical retaining ring 18 to abut against the conical surface; the expansion ring 17 is located on the side with the larger inner diameter of the conical retaining ring 18, and the diameter of the expansion ring 17 is smaller than the inner diameter of the end with the larger inner diameter. The expansion ring 17 is configured to wedge into the conical retaining ring 18 when the sealing sleeve 16 is threadedly connected to the mounting base 19. The expansion ring 17 can be a relatively thin circular ring, or alternatively, it can be a truncated cone with a height less than that of the tapered retaining ring 18. Thus, the expansion ring 17 and the tapered retaining ring 18 can be two truncated cones nested within one another. This design of the expansion ring 17 and the tapered retaining ring 18 ensures that when the sealing sleeve 16 and the mounting base 19 are screwed together, they engage, compress, and are also compressed to fit snugly between the inner surface of the mounting base 19 and the sleeve rod 21.

[0035] The additional ferrule 15 is welded to the end of the sleeve 21 away from the thermocouple probe 8 and has a hollow through-hole. A first seal 12, a second seal 14, and an intermediate seal 13 sandwiched between the first and second seals 12, 14 are disposed in the hollow through-hole. The first seal 12, the second seal 14, and the intermediate seal 13 each have a plurality of holes for passing a plurality of wires 7. The end cap 11 is screwed onto the additional ferrule 15 so that the first seal 12, the intermediate seal 13, and the second seal 14 are clamped between the end cap 11 and the additional ferrule 15. The intermediate seal 13 is a seal made of graphite, and / or the first seal 12 and the second seal 14 are seals made of metal.

[0036] External threads are provided at both ends of the additional ferrule 15. One end of the additional ferrule 15 is threadedly connected to the sealing ferrule 16, and the other end is threadedly connected to the end cap 11, so that the end cap 11 covers one end of the mounting assembly. The end cap 11 has an opening for the extension of the wire 7.

[0037] Figure 4This is an enlarged cross-sectional view of the end cap and additional ferrule portion of a multi-point thermocouple mounting assembly according to an embodiment of the present invention, which more clearly shows the connection relationship between the end cap 11, the first seal 12, the intermediate seal 13, the second seal 14 and the additional ferrule 15. As shown in the figure, a plurality of wires 7 pass through the plurality of holes of the first seal 12, the intermediate seal 13 and the second seal 14 and are constrained by the plurality of holes, and the first seal 12, the intermediate seal 13 and the second seal 14 are clamped between the end cap 11 and the additional ferrule 15 that are screwed together. Since the intermediate seal 13 made of graphite material will deform under extrusion, it can clamp the wire 7 and tightly abut against the outer surface of the hollow through hole of the additional ferrule 15, thereby forming a sealing structure.

[0038] It should be noted that, with the exception of the intermediate seal 13 and the gasket 12 , all other components in the multi-point thermocouple mounting assembly of the present invention can be made of metal materials, such as stainless steel.

[0039] The following describes the installation process, sealing effect, and principle of adjusting the orientation of the thermocouple probes of the multi-point thermocouple installation assembly of the present invention in conjunction with the aforementioned structure.

[0040] The multi-point thermocouple mounting assembly according to the present invention includes components such as an end cap, a first seal, an intermediate seal, a second seal, an additional ferrule, a sealing ferrule, an expansion ring, a tapered retaining ring, a mounting base, a gasket, and a sleeve. The combination of these components achieves different levels of sealing, as described in detail below. First, the multi-point thermocouple mounting assembly of the present invention utilizes a sleeve to secure the thermocouple probe. The thermocouple wires extend from the sleeve and connect to an external interface assembly, which in turn connects to the thermocouple plug. To prepare for temperature measurement, the mounting base is first threaded onto the container to be measured, and a gasket is placed between the mounting base and the container to be measured. This achieves a first level of sealing, sealing the container to be measured from the outside air. Secondly, operate the sleeve rod that has been pre-welded with an additional ferrule and fixed with the thermocouple probe and wire, and pass the wire through the second seal, the middle seal and the first seal in sequence, and then place the second seal, the middle seal and the first seal in the hollow through hole of the additional ferrule in sequence, and then put the end cap on, screw the end cap on the additional ferrule, and the tightening of the end cap and the additional ferrule makes the first seal and the second seal tightly clamp the middle seal. Since the middle seal is made of deformable graphite material, the middle seal tightly clamps the wire, that is, the hole of the middle seal is tightly fitted with the wire, and the three seals are tightened in the hollow through hole, so that the three seals are close to the inner wall of the hollow through hole, which realizes the second level of sealing, that is, the gas or liquid from the container to be tested can flow along the inside of the sleeve rod to the additional ferrule, but cannot pass through the gap between the middle through hole and the seal, nor through the gap between the wire and the middle seal, and therefore cannot leak. Again, the sealing ferrule is screwed onto the additional ferrule, the expansion ring and the tapered clamping ring are sleeved on the sleeve rod, and then the combination of the end cap, the first seal, the intermediate seal, the second seal, the additional ferrule, the sealing ferrule and the sleeve rod (including the expansion ring and the tapered clamping ring) is inserted into the container to be tested through the aforementioned installed mounting base, so that the thermocouple probe is inserted into the specified position in the container to be tested, and the direction of the thermocouple probe is oriented, and then the sealing ferrule is screwed onto the mounting base. During the screwing process, the sealing ferrule presses against the expansion ring, so that the expansion ring is wedged into the tapered clamping ring, and the clamping force between the inner surface of the mounting base and the sealing ferrule and the mounting base is utilized, so that the expansion ring and the tapered clamping ring are tightly clamped between the outer circumferential surface of the sleeve rod and the inner surface of the mounting base, thereby achieving the third level of sealing, that is, the gas or liquid from the container to be tested cannot leak through the gap between the outer circumferential surface of the sleeve rod and the inner surface of the mounting base.

[0041] Thus, it can be seen that the thermocouple mounting assembly of the present invention is supplemented with a sealing structure at every possible leakage location. In particular, the structure using the first seal, the intermediate seal (graphite), and the second seal, as well as the structure using the expansion ring and the tapered retaining ring, provides a strong seal. Therefore, the thermocouple mounting assembly of the present invention can improve the sealing performance of a multi-point thermocouple measuring device.

[0042] It should be noted that the aforementioned additional ferrule, sealing ferrule and mounting base are all structures with threads at both ends. Both ends of the additional ferrule have external threads, one end of the sealing ferrule is internal threaded and the other end is external threaded, and one end of the mounting base is internal threaded and the other end is external threaded. When the thermocouple mounting assembly is in the installed state, the end cap is screwed to the additional ferrule, the sealing ferrule is screwed to the mounting base, and the mounting base is screwed to the container to be tested, but the additional ferrule and the sealing ferrule do not need to be completely screwed together. This is because, as mentioned above, before the aforementioned assembly is inserted into the container to be tested, the sealing ferrule is completely screwed onto the additional ferrule. However, after the aforementioned assembly is inserted into the container to be tested, the operator uses a wrench to rotate the sealing ferrule to screw it onto the mounting base. During the operation, the components of the assembly except the sealing ferrule need to be kept stationary (because the direction and external position of the thermocouple probe have been set at this time). Therefore, as the sealing ferrule is screwed onto the mounting base, the sealing ferrule gradually loosens from the additional ferrule. The ideal state is that after the sealing ferrule is connected to the mounting base, the sealing ferrule is not completely detached from the additional ferrule, that is, the sealing ferrule is connected to the additional ferrule but the two are not completely screwed together. This state does not affect the sealing performance, because the leakage along the outer circumference of the sleeve rod has been suppressed by the expansion ring and the tapered clamping ring. Therefore, even if there is a gap between the outer circumference of the sleeve rod and the sealing ferrule and between the sealing ferrule and the additional ferrule, it will not cause leakage.

[0043] As previously mentioned, the orientation of the thermocouple probe can be oriented after the aforementioned assembly is inserted into the container to be tested, and the orientation of the thermocouple probe can also be adjusted after the mounting assembly is installed by loosening the connection between the sealing sleeve and the mounting base and then rotating the aforementioned assembly. Therefore, the multi-point thermocouple mounting assembly of the present invention can accurately orient the probe in the unmounted state and adjust the probe's orientation in the mounted state.

[0044] After the aforementioned assembly is formed, the position of the thermocouple probe relative to the end cap or the additional ferrule is actually fixed. Therefore, a mark can be made on the end cap or the additional ferrule exposed outside the container to be tested to indicate the orientation of the thermocouple probe. After the aforementioned assembly is inserted into the container to be tested, the orientation of the thermocouple probe can be identified with the help of the mark, and based on this, the orientation of the thermocouple probe can be adjusted to match the desired orientation.

[0045] As a further improvement to the present invention, the designers noted that based on the aforementioned structure, when the multi-point thermocouple mounting assembly is installed, the additional ferrule 15 and the sealing ferrule 16 are relatively loose, that is, not tightly fastened. In this case, since there is no compressive force acting on the additional ferrule 15 and the sealing ferrule 16, the additional ferrule 15 is easily loosened from the end cap 11, and the sealing ferrule 16 is easily loosened from the mounting base 19. To avoid this phenomenon, the designers designed the external profiles of the additional ferrule 15 and the sealing ferrule 16 to be hexagonal nut-shaped. In addition, the multi-point thermocouple mounting assembly of the present invention further includes a pair of plastic clips that can be docked, each clip having a recess that matches the shape of half a hexagonal nut. After installation, the two clips can be buckled onto the outside of the additional ferrule 15 and the sealing ferrule 16. The shape of the hexagonal nut prevents the additional ferrule 15 and the sealing ferrule 16 from rotating relative to each other, thus making it difficult for the additional ferrule 15 and the sealing ferrule 16 to loosen.

[0046] Furthermore, a plurality of circular scale lines are provided on the sleeve rod 21, which are arranged around the circumference of the sleeve rod 21 and are spaced apart at fixed intervals. Each scale line is marked with a scale, so as to facilitate determination of the insertion depth of the sleeve rod 21 into the container 1 to be tested.

[0047] According to another aspect of the present invention, a multi-point thermocouple measurement device 2 is provided. The multi-point thermocouple measurement device 2 includes the multi-point thermocouple mounting assembly as described above.

[0048] The multi-point thermocouple measuring device of the present invention has improved sealing performance by adopting the aforementioned mounting assembly, and can accurately orient the thermocouple probes, thereby having higher reliability and higher measurement accuracy.

[0049] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes can be made to these embodiments without departing from the principles and spirit of the invention. The scope of application of the present invention is defined by the following claims and their equivalents.

[0050] List of reference numerals:

[0051] 1 Container to be tested

[0052] 2 Multi-point thermocouple measurement device

[0053] 3 Diffuser

[0054] 4 nozzles

[0055] 5 Thermocouple plug

[0056] 6 Interface Components

[0057] 7 wires

[0058] 8 Thermocouple probes

[0059] 11 End cap

[0060] 12 First seal

[0061] 13 Intermediate seal

[0062] 14 Second seal

[0063] 15 Additional card sleeve

[0064] 16 Sealing ferrule

[0065] 17 Rising Circle

[0066] 18 Conical snap ring

[0067] 19 Installing the base

[0068] 20 gaskets

[0069] 21 rod sets

[0070] 31 container seat

[0071] 32 mounting holes

[0072] 33 Threaded portion.

Claims

1. A multi-point thermocouple mounting assembly, comprising a sleeve rod (21), wherein the sleeve rod (21) is used to receive a plurality of wires (7) and fix thermocouple probes (8), characterized in that: The mounting assembly further comprises a mounting base (19) sleeved on the sleeve rod (21), a sealing sleeve (16), and a sealing ring between the mounting base (19) and the sealing sleeve (16). The mounting base (19) is provided with an external thread at one end close to the container to be tested (1) and is configured to be fixed on the container to be tested (1) based on the external thread, and the mounting base (19) is provided with an internal thread at one end away from the container to be tested (1). An end of the sealing sleeve (16) close to the container (1) to be tested is provided with an external thread, so that it can be threadedly connected to the internal thread of the mounting base (19), so that when the sealing sleeve (16) is threadedly connected to the mounting base (19), the sealing ring is clamped on the outer peripheral surface of the sleeve rod (21). The mounting assembly further comprises an additional ferrule (15), the additional ferrule (15) being welded and fixed to an end of the sleeve rod (21) away from the thermocouple probe (8), and the additional ferrule (15) being configured to be threadedly connected to an end of the sealing ferrule (16) away from the container to be tested (1), so that the sleeve rod (21) passes through the sealing ferrule (16); Wherein, the sleeve rod (21) is configured to pass through the mounting base (19) mounted on the container to be tested (1) to enter the container to be tested (1) after being fixedly connected to the sealing sleeve (16); wherein the thermocouple probe (8) is configured to be fixed in position relative to the additional ferrule (15), so that the orientation of the thermocouple probe (8) can be marked and identified on the additional ferrule (15); and The sealing ferrule (16) is configured to be fixed to the mounting base (19) in a threaded connection manner after the orientation of the thermocouple probe (8) in the sleeve rod (21) is oriented or adjusted, so that the threaded connection between the sealing ferrule (16) and the additional ferrule (15) is loosened.

2. The multi-point thermocouple mounting assembly according to claim 1, wherein: The sealing ring comprises an expansion ring (17) and a conical snap ring (18), wherein the conical snap ring (18) has different inner diameters at both ends along the direction of the sleeve rod (21), and the mounting base (19) has an inner surface that abuts against the conical surface of the conical snap ring (18); The expansion ring (17) is located on the side with the larger inner diameter of the tapered retaining ring (18), and the diameter of the expansion ring (17) is smaller than the inner diameter of the end with the larger inner diameter. The expansion ring (17) is configured to wedge into the tapered retaining ring (18) when the sealing sleeve (16) is threadedly connected to the mounting base (19).

3. The multi-point thermocouple mounting assembly according to claim 2, wherein: The mounting assembly further comprises an end cap (11), wherein the end cap (11) covers one end of the mounting assembly.

4. The multi-point thermocouple mounting assembly according to claim 3, wherein: The additional ferrule (15) has a hollow through hole; A first sealing member (12), a second sealing member (14), and an intermediate sealing member (13) sandwiched between the first sealing member (12) and the second sealing member (14) are provided in the hollow through hole, and the first sealing member (12), the second sealing member (14), and the intermediate sealing member (13) respectively have a plurality of holes for a plurality of wires (7) to pass through; The end cap (11) is screwed onto the additional ferrule (15) so that the first seal (12), the intermediate seal (13) and the second seal (14) are clamped between the end cap (11) and the additional ferrule (15).

5. The multi-point thermocouple mounting assembly according to claim 4, characterized in that: The intermediate seal (13) is a seal made of graphite, and / or the first seal (12) and the second seal (14) are seals made of metal.

6. The multi-point thermocouple mounting assembly according to claim 4, characterized in that: The end cap (11) has an opening for the wire (7) to extend out.

7. The multi-point thermocouple mounting assembly according to any one of claims 1 to 6, characterized in that: The sleeve rod (21) includes a plurality of through holes, and the plurality of through holes are configured for the extension of thermocouple probes (8).

8. The multi-point thermocouple mounting assembly according to any one of claims 1 to 6, characterized in that: The mounting assembly further comprises a gasket (20), and the gasket (20) is used to seal the connection between the mounting base (19) and the container to be tested (1).

9. A multi-point thermocouple measuring device (2), characterized in that: The multi-point thermocouple measuring device (2) comprises a multi-point thermocouple mounting assembly as claimed in any one of claims 1 to 8.

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