Protection device for plug-in high-pressure temperature instrument and pipeline temperature measurement structure

Abstract

The utility model discloses a protection device for a plug-in high-pressure temperature instrument and a pipeline temperature measurement structure, and the protection device comprises a protection sleeve which is provided with an insertion section used for being inserted into a pipeline; a mounting channel and a protection channel which are communicated with each other are arranged in the protection sleeve, and the protection channel extends into the insertion section; the end, away from the installation channel, of the protection channel is closed, a first connecting structure is arranged in the installation channel and used for being detachably and fixedly connected with the temperature instrument, and the protection channel is used for containing a temperature sensing element of the temperature instrument; and an external thread is arranged on the outer side of the insertion section and is used for being in threaded connection with a pipeline. According to the utility model, the problems that the protection device of the temperature instrument is not easy to mount and dismount on the pipeline, is difficult to adapt to the small-caliber pipeline and is high in use cost in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement, in particular to a protection device for an inserted high-pressure temperature instrument and a pipeline temperature measurement structure. Background Art

[0002] In some industrial processes, temperature measurement in many unconventional environments requires the protection of temperature instruments. Since high-precision temperature measurement requires the temperature sensing element to be inserted into the cavity of a pipe, container, etc., high pressure or high flow rate will cause deformation and damage during the temperature sensing period. In addition, when measuring corrosive media, the temperature measurement components will also be damaged. Therefore, it is necessary to protect the temperature measurement sensor used in such an unconventional environment.

[0003] In the related art, a flange-type temperature instrument protection sleeve is used. The sleeve is used as an intermediate transfer protection device, connected to the temperature instrument by threading, and connected to the temperature measured pipeline by flange. However, the flange-type temperature instrument protection sleeve is too large and is only suitable for the installation of temperature instruments in large-diameter pipelines, but not for the installation of temperature instruments in small-diameter pipelines. An additional flange base is required, which is costly.

[0004] In addition, there is also a welded temperature instrument protection sleeve, which is used as an intermediate transfer protection device, connected to the temperature instrument by threading, and connected to the temperature measured pipeline by welding. However, the welded temperature instrument protection sleeve needs to be welded from the pipeline. If the opening of the pipeline with a small diameter is too large, it will affect the strength, and the welding structure is not convenient for disassembly during use. Utility Model Content

[0005] The main purpose of the utility model is to provide a protection device for an inserted high-pressure temperature instrument and a pipeline temperature measurement structure, so as to solve the problems in the related art that the protection device of the temperature instrument is not easy to install and disassemble on the pipeline, is difficult to apply to small-diameter pipelines, and has high use costs.

[0006] In order to achieve the above object, the utility model provides a protection device for an inserted high-pressure temperature instrument, the protection device comprising:

[0007] A protective sleeve, wherein the protective sleeve is provided with an insertion section for inserting into the pipeline;

[0008] The protective sleeve is provided with a connecting installation channel and a protective channel, and the protective channel extends into the insertion section;

[0009] One end of the protection channel away from the installation channel is closed, a first connection structure is arranged in the installation channel, the first connection structure is used to be detachably fixedly connected to the temperature instrument, and the protection channel is used to accommodate the temperature sensing element of the temperature instrument;

[0010] The outer side of the insertion section is provided with an external thread, and the external thread is used for being threadedly connected with a pipeline.

[0011] Furthermore, a temperature conducting medium is arranged in the protection channel, and the temperature conducting medium is filled between the temperature sensing element of the temperature instrument and the inner wall of the protection channel.

[0012] Furthermore, the temperature transfer medium includes heat transfer oil.

[0013] Furthermore, the protective sleeve also includes a mounting section, the outer diameter of the mounting section is larger than the outer diameter of the insertion section, the mounting channel is located in the mounting section, and the inner diameter of the mounting channel is larger than the inner diameter of the protective channel.

[0014] Furthermore, the protective sleeve also includes a connecting section, which is configured as a conical structure, wherein a large diameter end of the connecting section is connected to the mounting section, and a small diameter end of the connecting section is connected to the insertion section.

[0015] Furthermore, the top end of the external thread is close to the small diameter end of the connecting section.

[0016] Furthermore, the first connection structure is configured as a first internal thread, and the first internal thread is used for threaded connection with the temperature instrument.

[0017] Furthermore, the outer contour of the installation section is set to be a polygon.

[0018] According to another aspect of the present application, there is provided a pipeline temperature measurement structure, comprising the above-mentioned protection device, a temperature instrument and a pipeline;

[0019] The temperature instrument comprises a temperature sensing element, a connecting element and a display element, wherein the connecting element is located at the upper end of the temperature sensing element, the connecting element is arranged in the installation channel and is detachably fixedly connected to the first connecting structure, and the temperature sensing element is inserted into the protection channel;

[0020] The insertion section of the protection device is threadably connected to the pipeline through the external thread and extends into the pipeline;

[0021] At least a portion of the protection channel and the temperature sensing element extends into the pipeline.

[0022] Furthermore, the pipeline includes a first pipe section, a second pipe section and a tee pipe, the two ends of the tee pipe are respectively connected to the first pipe section and the second pipe section, the third end of the tee pipe is provided with a second internal thread, the second internal thread is threadedly connected to the external thread, and the insertion section extends into the tee pipe.

[0023] In the embodiment of the utility model, a protective sleeve is provided, and an insertion section for inserting into the pipeline is provided on the protective sleeve; a connecting installation channel and a protective channel are provided in the protective sleeve, and the protective channel extends into the insertion section; an end of the protective channel away from the installation channel is closed, and a first connecting structure is provided in the installation channel, and the first connecting structure is used for detachably fixedly connecting with the temperature meter, and the protective channel is used to accommodate the temperature sensing element of the temperature meter; an external thread is provided on the outer side of the insertion section, and the external thread is used for connecting with the pipeline thread, so that the temperature sensing element of the temperature meter can be installed in the protection channel of the protective sleeve, and the temperature sensing element of the temperature meter is protected by the protection channel, and at the same time, the temperature sensing element of the temperature meter is protected by the first The temperature instrument is fixed under the action of the connecting structure, and then the protective sleeve can be threadedly connected to the pipeline using the external thread of the insertion section to complete the installation of the protective sleeve. When disassembling, it is only necessary to loosen the protective sleeve to make it completely separate from the pipeline, thereby achieving the purpose of enabling the protective sleeve to be threadedly connected to the pipeline, improving the reliability and pressure-bearing capacity of the protective sleeve, and facilitating repeated maintenance and disassembly. It can be applied to pipelines of various calibers, does not require additional accessories, and has a low cost of use. This solves the problem that the protective device of the temperature instrument in the related technology is not easy to install and disassemble on the pipeline, is difficult to apply to small-diameter pipelines, and has a high cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, so that other features, purposes and advantages of the present invention become more obvious. The drawings and descriptions of the schematic embodiments of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0025] Figure 1 is a schematic structural diagram of a protective sleeve according to an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of a pipeline temperature measurement structure according to an embodiment of the present invention;

[0027] Among them, 1 is a protective sleeve, 11 is an insertion section, 110 is an external thread, 111 is a protective channel, 12 is a mounting section, 120 is a mounting channel, 121 is a first connecting structure, 13 is a connecting section, 2 is a temperature meter, 20 is a temperature sensing element, 3 is a pipeline, 30 is a first pipe section, 31 is a three-way pipe, and 32 is a second pipe section. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to describe the embodiments of the utility model described here.

[0030] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "inner", etc. are based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0032] In addition, the terms "disposed", "provided with", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] In addition, the term "plurality" shall mean two or more.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] To solve relevant technical problems, such as Figure 1 and Figure 2As shown, the embodiment of the utility model provides a protection device for an inserted high-pressure temperature instrument, the protection device comprising:

[0036] A protective sleeve 1, wherein the protective sleeve 1 is provided with an insertion section 11 for inserting into the pipeline 3;

[0037] The protective sleeve 1 is provided with a connecting installation channel 120 and a protective channel 111, and the protective channel 111 extends into the insertion section 11;

[0038] One end of the protection channel 111 away from the installation channel 120 is closed, and a first connection structure 121 is provided in the installation channel 120. The first connection structure 121 is used to be detachably fixedly connected to the temperature instrument 2. The protection channel 111 is used to accommodate the temperature sensing element 20 of the temperature instrument 2.

[0039] An external thread 110 is provided on the outer side of the insertion section 11 , and the external thread 110 is used for threaded connection with the pipeline 3 .

[0040] In this embodiment, the temperature sensing element 20 of the temperature meter 2 needs to be protected by the protective sleeve 1, and the temperature meter 2 needs to be installed on the pipeline 3 and the temperature sensing element 20 needs to be extended into the pipeline 3. The temperature of the medium in the pipeline 3 is transmitted to the temperature sensing element 20 of the temperature meter 2 through the protective device, so that the temperature of the medium is measured by the temperature sensing element 20. Therefore, in this embodiment, the protective sleeve 1 includes an insertion section 11, and the insertion section 11 can be inserted into the pipeline 3, so that the temperature sensing element 20 located in the protective sleeve 1 can extend into the pipeline 3.

[0041] Since the temperature meter 2 needs to be installed in the protective sleeve 1 and the temperature sensing element 20 of the temperature meter 2 needs to be protected at the same time, the protective sleeve 1 in this embodiment is provided with a connecting installation channel 120 and a protection channel 111. The installation channel 120 is located at the upper end of the protection channel 111. During installation, the temperature sensing element 20 of the temperature meter 2 can be inserted into the protection channel 111 through the installation channel 120, and then the temperature meter 2 is fixed by the first connection structure 121 in the installation channel 120. In this embodiment, the first connection structure 121 is a structure fixedly connected to a specific part of the temperature meter 2. The first connection structure 121 also has different structural forms according to different connection forms. In one embodiment, the first connection structure 121 can be an internal thread formed in the installation channel 120, which can be threadedly connected to the external thread 110 at a specific part of the temperature meter 2 to fix the temperature meter 2. In another embodiment, the first connection structure 121 can be a snap-fit ​​structure, which can be snap-fitted to a specific part of the temperature meter 2 to fix the temperature meter 2. In this embodiment, there is no limitation on the specific structural form of the first connection structure 121 , as long as it can satisfy the requirement of fixed connection to the temperature instrument 2 .

[0042] In order to improve the protection capability of the temperature sensing element 20, in this embodiment, the end of the protection channel 111 away from the installation channel 120 is set as a closed structure, that is, the lower end of the protection channel 111 is set as a closed structure, so that after the protection sleeve 1 is installed on the pipeline 3, the impact force of the medium flow in the pipeline 3 and the corrosiveness of the medium will not directly act on the temperature sensing element 20, which can significantly improve the service life of the temperature sensing element 20.

[0043] In order to facilitate the installation of the protective sleeve 1 on the pipeline 3, in this embodiment, an external thread 110 is provided on the insertion section 11 of the protective sleeve 1, and the external thread 110 can be threadedly connected with the internal thread on the pipeline 3, so that the protective sleeve 1 can be installed on the pipeline 3 in a threaded connection manner. When disassembling, the protective sleeve 1 can be removed from the pipeline 3 by simply unscrewing it in the reverse direction.

[0044] The present embodiment achieves the purpose of installing the temperature sensing element 20 of the temperature instrument 2 into the protection channel 111 of the protection sleeve 1, and protecting the temperature sensing element 20 of the temperature instrument 2 by using the protection channel 111. At the same time, the temperature instrument 2 is fixed under the action of the first connection structure 121, and then the protection sleeve 1 can be threadedly connected to the pipeline 3 by using the external thread 110 of the insertion section 11 to complete the installation of the protection sleeve 1. When disassembling, it is only necessary to loosen the protection sleeve 1 to separate it from the pipeline 3 as a whole, thereby achieving the purpose of enabling the protection sleeve 1 to be threadedly connected to the pipeline 3, improving the reliability and pressure bearing capacity of the protection sleeve 1, and facilitating repeated maintenance and disassembly. Moreover, it can be applied to pipelines 3 of various calibers, does not require the configuration of additional accessories, and has a low use cost. This solves the problem that the protection device of the temperature instrument 2 in the related art is not easy to install and disassemble on the pipeline 3, is difficult to apply to small-caliber pipelines 3, and has a high use cost.

[0045] Since the lower end of the protection channel 111 is a closed structure, the temperature sensing element 20 in the protection channel 111 will not be in direct contact with the medium in the pipeline 3, and the temperature of the medium in the pipeline 3 needs to be conducted to the temperature sensing element 20 through the protection sleeve 1. Therefore, in order to facilitate the conduction of temperature, a temperature conduction medium is provided in the protection channel 111 in this embodiment, and the temperature conduction medium is filled between the temperature sensing element 20 of the temperature instrument 2 and the inner wall of the protection channel 111. In one embodiment, the temperature conduction medium includes heat transfer oil.

[0046] To facilitate the installation of the temperature instrument 2, Figure 1 As shown, the protective sleeve 1 in this embodiment further includes a mounting section 12 , the outer diameter of which is greater than the outer diameter of the insertion section 11 , the mounting channel 120 is located in the mounting section 12 , and the inner diameter of the mounting channel 120 is greater than the inner diameter of the protective channel 111 .

[0047] According to the structural characteristics of the temperature meter 2, the diameter of the portion of the temperature meter 2 used to adapt to the installation channel 120 is larger than the diameter of the temperature sensing element 20, so the diameter of the installation channel 120 needs to be larger than the diameter of the protection channel 111. On this basis, in order to make the installation channel 120 have sufficient structural strength, the diameter of the installation section 12 on the protective sleeve 1 in this embodiment is also larger than the diameter of the insertion section 11, and the installation section 12 with a larger diameter is used to provide sufficient structural strength for the installation channel 120. Since the protective sleeve 1 needs to be twisted when disassembling the protective sleeve 1, that is, the installation section 12 needs to be twisted, so in order to facilitate twisting the installation section 12, the outer contour of the installation section 12 in this embodiment is set to a polygon, preferably a hexagon, so that it can be adapted to a hexagonal wrench. Of course, in the case of considering disassembly without the aid of external tools, in order to facilitate twisting the installation section 12, a handle can be provided on the installation section 12, and the handle can extend radially, so that the installation section 12 can be twisted by the handle.

[0048] Since the insertion section 11 of the protective sleeve 1 is threadedly connected to the pipeline 3, in order to facilitate the connection of the insertion section 11, as shown in FIG. Figure 1 As shown, the protective sleeve 1 in this embodiment also includes a connecting section 13, which is configured as a conical structure. The large diameter end of the connecting section 13 is connected to the mounting section 12, the small diameter end of the connecting section 13 is connected to the insertion section 11, and the top end of the external thread 110 is close to the small diameter end of the connecting section 13.

[0049] In this embodiment, the tapered connecting section 13 can firstly limit the maximum screwing degree of the inserting section 11 after the inserting section 11 is screwed into the pipeline 3, that is, when the inserting section 11 is screwed into the outside of the pipeline 3 and abuts against the small diameter end of the connecting section 13, the inserting section 11 will not be able to be screwed in further, so that the screwing depth of the inserting section 11 in the pipeline 3 can be controlled. In order to facilitate the temperature measurement of the medium in the pipeline 3, the insertion depth of the temperature sensing element 20 is 1 / 2 to 2 / 3D, where D is the inner diameter of the pipeline 3. Secondly, the tapered connecting section 13 can also be installed on the pipeline 3, and the small diameter end of the connecting section 13 can be tightly fitted with the outer opening of the internal threaded hole on the pipeline 3 in the circumferential direction, thereby improving the connection sealing between the protective sleeve 1 and the pipeline 3.

[0050] On this basis, in order to further improve the sealing performance, a sealing ring can be embedded on the outside of the small diameter end of the connecting section 13, and the pressure of the inserted section 11 after the threaded connection can be used to cause the sealing ring to produce a certain amount of deformation, thereby better sealing the internal threaded hole on the pipeline 3.

[0051] In one embodiment of the first connection structure 121, the first connection structure 121 is configured as a first internal thread, and the first internal thread is used for threaded connection with the temperature instrument 2. The material of the protective sleeve 1 can be stainless steel or carbon steel. Preferably, the material of the protective sleeve 1 is 316SS stainless steel, which has good corrosion resistance and is compatible with higher hardness to improve impact resistance.

[0052] According to another aspect of the present application, Figure 2 As shown, a pipeline temperature measurement structure is provided, comprising the above-mentioned protection device, a temperature instrument 2 and a pipeline 3;

[0053] The temperature instrument 2 includes a temperature sensing element 20, a connecting element and a display element. The connecting element is located at the upper end of the temperature sensing element 20. The connecting element is arranged in the installation channel 120 and is detachably fixedly connected to the first connecting structure 121. The temperature sensing element 20 is inserted into the protection channel 111.

[0054] The insertion section 11 of the protection device is threadedly connected to the pipeline 3 through the external thread 110 and extends into the pipeline 3;

[0055] At least a portion of the protection channel 111 and the temperature sensing element 20 extends into the pipeline 3 .

[0056] In one embodiment of the pipeline 3, in order to facilitate the installation of the protective sleeve 1 in a threaded connection manner, the pipeline 3 includes a first pipe section 30, a second pipe section 32 and a tee pipe 31, and the two ends of the tee pipe 31 are respectively connected to the first pipe section 30 and the second pipe section 32, and the third end of the tee pipe 31 is provided with a second internal thread, and the second internal thread is threadedly connected to the external thread 110, and the insertion section 11 extends into the tee pipe 31.

[0057] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the utility model.

Claims

1. A protective device for an inserted high-pressure temperature instrument, characterized in that: include: A protective sleeve, wherein the protective sleeve is provided with an insertion section for inserting into the pipeline; The protective sleeve is provided with a connecting installation channel and a protective channel, and the protective channel extends into the insertion section; One end of the protection channel away from the installation channel is closed, a first connection structure is arranged in the installation channel, the first connection structure is used to be detachably fixedly connected to the temperature instrument, and the protection channel is used to accommodate the temperature sensing element of the temperature instrument; The outer side of the insertion section is provided with an external thread, and the external thread is used for being threadedly connected with a pipeline.

2. The protective device for an inserted high-pressure temperature instrument according to claim 1, characterized in that: A temperature conducting medium is arranged in the protection channel, and the temperature conducting medium is filled between the temperature sensing element of the temperature instrument and the inner wall of the protection channel.

3. The protective device for an inserted high-pressure temperature instrument according to claim 2, characterized in that: The temperature transfer medium includes heat transfer oil.

4. The protective device for an inserted high-pressure temperature instrument according to claim 1, characterized in that: The protective sleeve further comprises a mounting section, the outer diameter of which is larger than the outer diameter of the insertion section, the mounting channel is located in the mounting section, and the inner diameter of which is larger than the inner diameter of the protective channel.

5. The protective device for an inserted high-pressure temperature instrument according to claim 4, characterized in that: The protective sleeve also includes a connecting section, which is configured as a conical structure, wherein a large-diameter end of the connecting section is connected to the mounting section, and a small-diameter end of the connecting section is connected to the insertion section.

6. The protection device for an inserted high-pressure temperature instrument according to claim 5, characterized in that: The top end of the external thread is close to the small diameter end of the connecting section.

7. The protection device for an inserted high-pressure temperature instrument according to claim 1, characterized in that: The first connection structure is configured as a first internal thread, and the first internal thread is used for threaded connection with the temperature instrument.

8. The protection device for an inserted high-pressure temperature instrument according to claim 4, characterized in that: The outer contour of the installation section is set to be a polygon.

9. A pipeline temperature measurement structure, characterized in that: comprising the protection device, temperature instrument and pipeline as claimed in any one of claims 1 to 7; The temperature instrument comprises a temperature sensing element, a connecting element and a display element, wherein the connecting element is located at the upper end of the temperature sensing element, the connecting element is arranged in the installation channel and is detachably fixedly connected to the first connecting structure, and the temperature sensing element is inserted into the protection channel; The insertion section of the protection device is threadably connected to the pipeline through the external thread and extends into the pipeline; At least a portion of the protection channel and the temperature sensing element extends into the pipeline.

10. The pipeline temperature measurement structure according to claim 9, characterized in that: The pipeline includes a first pipe section, a second pipe section and a tee pipe, the two ends of the tee pipe are respectively connected to the first pipe section and the second pipe section, the third end of the tee pipe is provided with a second internal thread, the second internal thread is threadedly connected to the external thread, and the insertion section extends into the tee pipe.

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