Probe mounting structure of expansion machine

Abstract

The utility model provides an expansion machine probe installation structure which comprises a tubular part, a probe body, a first nut and a second nut, and the tubular part is perpendicular to a main shaft, penetrates through an expansion machine shell and extends to the peripheral side of the main shaft; the outer wall of the tubular part is in threaded connection with the expansion machine shell, so that the distance between the tubular part and the main shaft is adjustable; the probe body is arranged at the end part of the tubular part close to the main shaft and is in threaded connection with the inner wall of the tubular part; the first nut is screwed and fixed on the probe body, and is hermetically connected with the end part of the tubular part through a first sealing ring; the second nut is screwed and fixed on the tubular part, and is hermetically connected with the outer wall of the expansion machine shell through a second sealing ring; a third sealing ring is arranged between the inner wall of the second nut and the tubular part; according to the expansion machine probe installation structure, the structural strength is guaranteed, and meanwhile leakage of pressurized gas and lubricating oil in an expansion machine is prevented.

Description

Technical Field

[0001] The utility model relates to the field of expanders, and in particular to an expander probe mounting structure. Background Art

[0002] The spindle speed and vibration are important indicator parameters for monitoring the operating status of the expander. Usually, the spindle speed and vibration are measured by a probe. In order to make the measurement and monitoring results more accurate, the distance between the probe and the spindle needs to be fine-tuned to achieve the appropriate state.

[0003] At present, when other fields of equipment measure the spindle speed, the speed probe is threadedly connected to the shell on the side of the spindle. The distance between the probe and the spindle can be adjusted by screwing the speed probe. However, in some expander equipment, there is a large pressure difference between the inside and outside of the expander. If the probe and the expander shell are simply connected by threads under the large pressure difference, the pressurized gas and lubricating oil inside the expander can easily leak along the gap between the probe and the expander shell. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the background technology and provide an expander probe installation structure.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] An expander probe mounting structure, comprising:

[0007] a tubular member, which passes through the expander housing perpendicular to the main shaft and extends to the circumference of the main shaft; the outer wall of the tubular member is threadedly connected to the expander housing so that the distance between the tubular member and the main shaft is adjustable;

[0008] a probe body, which is disposed at the end of the tubular member close to the main shaft and is threadedly connected to the inner wall of the tubular member;

[0009] a first nut, which is screwed and fixed on the probe body and is sealed to the end of the tubular member via a first sealing ring; and

[0010] The second nut is screwed and fixed on the tubular member and is sealed to the outer wall of the expander housing via a second sealing ring; a third sealing ring is provided between the inner wall of the second nut and the tubular member.

[0011] Furthermore, the end of the tubular member has a trumpet-shaped groove, and the first sealing ring is embedded in the groove.

[0012] Furthermore, in any cross-section where the axis of the tubular member is located, the cross-sectional profile of the first sealing ring is in the shape of a right triangle, wherein two sets of right-angled sides of the triangular cross-sectional profile of the first sealing ring respectively abut against the first nut and the outer wall of the probe body, and the hypotenuse is adapted to the groove surface of the tubular member.

[0013] Furthermore, the tubular member has a first end and a second end opposite to each other, wherein the probe body is mounted on the first end of the tubular member, and a sealing plug is further mounted on the second end of the tubular member.

[0014] Furthermore, the second end of the tubular member has a head with an increased diameter, and the sealing plug is installed in the head.

[0015] Furthermore, the second sealing ring is embedded on the end surface of the second nut.

[0016] Furthermore, along the axial direction of the tubular member, at least two groups of the third sealing rings are provided between the second nut and the outer wall of the tubular member.

[0017] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0018] In the expansion host probe installation structure of the present invention, the probe thread is screwed onto the end of the tubular member and is compressed and sealed by the first nut and the first sealing ring; the tubular member thread is screwed onto the expander housing and is sealed to the expander housing and the tubular member respectively by the second sealing ring and the third sealing ring; the distance between the probe body and the main shaft can be adjusted by screwing the tubular member, and the adjustment is convenient and reliable, and the entire installation structure is locked by the first nut and the second nut, which not only ensures the structural strength but also prevents the leakage of pressurized gas and lubricating oil inside the expander. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the expansion host probe installation structure of the present utility model;

[0020] Figure 2 This is a schematic diagram of the connection relationship between the probe body and the tubular member of the present invention;

[0021] Icon: 10-expander housing, 2-main shaft, 30-tubular part, 300-groove, 31-head, 32-sealing plug, 40-probe body, 400-cable, 41-first nut, 42-first sealing ring, 50-second nut, 51-third sealing ring, 52-second sealing ring. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] Reference Figure 1 and Figure 2 The utility model discloses an expander probe installation structure, including a tubular member 30, a probe body 40, a first nut 41 and a second nut 50, wherein the probe body 40 is a speed measuring probe or a vibration monitoring probe, and a cable 400 is connected to its end.

[0025] Reference Figure 1 The tubular member 30 passes through the expander housing 10 perpendicular to the main shaft 20 of the expander, and the outer wall of the tubular member 30 is threadedly connected to the expander housing 10. The part of the tubular member 30 that passes through the inner side of the expander housing 10 extends to the circumferential side of the main shaft 20. In this embodiment, the tubular member 30 is in the radial direction of the main shaft 20.

[0026] Reference Figure 1 , it is defined that the tubular member 30 has a first end and a second end relative to each other, wherein the first end of the tubular member 30 extends to the interior of the expander casing 10, then, the probe body 40 is installed at the first end of the tubular member 30, and the second end of the tubular member 30 is also installed with a sealing plug 32; specifically, in this embodiment, the second end of the tubular member 30 has a head 31 with an increased diameter, the sealing plug 32 is installed in the head 31, and the cable of the probe body 40 is passed through the tubular member 30 and the sealing plug 32.

[0027] Reference Figure 1 and Figure 2 Since the outer wall of the tubular member 30 is threadedly connected to the expander housing 10 , the distance between the tubular member 30 and the main shaft 20 can be adjusted by screwing the tubular member 30 .

[0028] In this embodiment, since the probe body 40 is arranged at the first end of the tubular member 30, the probe body 40 is close to the main shaft 20, which is convenient for measuring the rotation speed of the main shaft 20, and the probe body 40 is threadedly connected to the inner wall of the tubular member 30, which facilitates the disassembly and assembly of the probe body 40.

[0029] Reference Figure 1 The first nut 41 is screwed and fixed on the probe body 40, and is sealed with the end of the tubular member 30 through a first sealing ring 42. That is, the probe body 40 is first connected to the tubular member 30, and then locked by the first nut 41 to prevent the pressurized gas and lubricating oil inside the expander from leaking out along the inside of the tubular member 30.

[0030] In addition, refer to Figure 2 In one embodiment, the first end of the tubular member 30 has a trumpet-shaped groove 300 , and the first sealing ring 42 is embedded in the groove 300 .

[0031] Specifically, in any cross-section of the axis of the tubular member 30, the cross-sectional profile of the first sealing ring 42 is in the shape of a right triangle, wherein the two sets of right-angled sides of the triangular cross-sectional profile of the first sealing ring 42 respectively abut against the first nut 41 and the outer wall of the probe body 40, and the hypotenuse is adapted to the groove 300 surface of the tubular member 30. Under the pressure of the first nut 41, the first sealing ring 42 is slightly deformed to fill the gap, and the sealing effect is better.

[0032] Reference Figure 1 The second nut 50 is screwed and fixed on the tubular member 30 , and the second nut 50 is sealed to the outer wall of the expander housing 10 through a second sealing ring 52 ; a third sealing ring 51 is provided between the inner wall of the second nut 50 and the tubular member 30 .

[0033] In this embodiment, the second sealing ring 52 is embedded on the end surface of the second nut 50 .

[0034] In this embodiment, along the axial direction of the tubular member 30 , at least two groups of third sealing rings 51 are provided between the inner wall of the second nut 50 and the outer wall of the tubular member 30 .

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An expander probe mounting structure, characterized in that: include: a tubular member (30) which penetrates the expander housing (10) perpendicularly to the main shaft (20) and extends to the circumference of the main shaft (20); an outer wall of the tubular member (30) is threadedly connected to the expander housing (10) so that the distance between the tubular member (30) and the main shaft (20) is adjustable; a probe body (40) which is arranged at the end of the tubular member (30) close to the main shaft (20) and is threadedly connected to the inner wall of the tubular member (30); a first nut (41) which is screwed and fixed on the probe body (40) and is sealed to the end of the tubular member (30) via a first sealing ring (42); and A second nut (50) is screwed and fixed on the tubular member (30) and is sealed to the outer wall of the expander housing (10) via a second sealing ring (52); a third sealing ring (51) is provided between the inner wall of the second nut (50) and the tubular member (30).

2. The expander probe mounting structure according to claim 1, characterized in that The end of the tubular member (30) has a trumpet-shaped groove (300), and the first sealing ring (42) is embedded in the groove (300).

3. The expander probe mounting structure according to claim 2, characterized in that In any cross section where the axis of the tubular member (30) is located, the cross-sectional profile of the first sealing ring (42) is in the shape of a right triangle, wherein two sets of right-angled sides of the triangular cross-sectional profile of the first sealing ring (42) respectively abut against the first nut (41) and the outer wall of the probe body (40), and the hypotenuse is adapted to the groove (300) surface of the tubular member (30).

4. The expander probe mounting structure according to claim 2 or 3, characterized in that The tubular member (30) has a first end and a second end opposite to each other, wherein the probe body (40) is installed on the first end of the tubular member (30), and a sealing plug (32) is also installed on the second end of the tubular member (30).

5. The expander probe mounting structure according to claim 4, characterized in that The second end of the tubular member (30) has a head (31) with an increased diameter, and the sealing plug (32) is installed in the head (31).

6. The expander probe mounting structure according to any one of claims 1 to 3 and 5, characterized in that: The second sealing ring (52) is embedded in the end surface of the second nut (50).

7. The expander probe mounting structure according to any one of claims 1 to 3 and 5, characterized in that: At least two groups of the third sealing rings (51) are provided between the second nut (50) and the outer wall of the tubular member (30) along the axial direction of the tubular member (30).

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