A probe line fixing structure for a large centrifugal unit
By designing a probe wire fixing structure including the upper half of the fixing block, the lower half of the fixing block and the bolt fastener, the problems of easy ripping, broken wire and falling off in the traditional probe wire fixing method are solved, and the stable fixing and corrosion-proof and explosion-proof effects of the probe wire are achieved.
Patent Information
- Application Number
- CN202421950133.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The traditional probe wire fixing method is prone to squirming, disconnection and falling off, resulting in unexpected parking accidents for large centrifuge units.
A probe wire fixing structure including the upper half of the fixing block, the lower half of the fixing block and the bolt fastener is designed. It is fixed to the tile seat by the bolt fastener, and the probe wire is clamped up and down on the fixing block, leaving instrument wire holes and air passages to prevent corrosion and explosion.
Effectively prevent the probe wire from squirting, disconnecting and falling off, ensure the smooth operation of the unit, avoid accidental parking, and achieve anti-corrosion and explosion-proof effects through the air channel.
Smart Images
Figure CN222721066U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of thrust bearings of centrifugal compressor units, and in particular relates to a probe line fixing structure of a large centrifugal unit. Background Art
[0002] The monitoring probes for the temperature and vibration of the thrust bearing of the centrifugal compressor need to lead the eddy current signal to the instrument box through the probe line, and then present it on the DCS interface after conversion through the data acquisition device. One end of the probe line is installed on the probe, and the other end must pass through the bearing box and lead to the instrument box. In order to prevent the probe line from contacting and moving with the rotating rotor, the probe line will be fixed with a clip.
[0003] Conventional fixing methods are frequently affected by the vortex of lubricating oil, resulting in problems such as probe line movement, warping, falling off, and line breakage. In severe cases, these problems affect the normal swing of the tile and pose a threat to production. Summary of the invention
[0004] Purpose of the utility model: The technical problem to be solved by the utility model is to provide a probe line fixing structure in view of the deficiencies in the prior art, so as to solve the problem of unexpected shutdown of large units caused by the easy movement, breakage and falling off of the traditional probe line fixing method.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] A probe line fixing structure for a large centrifuge unit comprises an upper fixing block, a lower fixing block and bolt fasteners; the upper fixing block and the lower fixing block are stacked and arranged on a tile seat of the centrifuge unit, and are fixed on the tile seat by a group of bolt fasteners penetrating the upper fixing block and the lower fixing block; an instrument line hole for the probe line to pass through is reserved between the upper fixing block and the lower fixing block, and the probe line is clamped and fixed by the upper fixing block and the lower fixing block.
[0007] Specifically, corresponding semicircular wire grooves are respectively arranged on the lower surface of the upper half of the fixing block and the upper surface of the lower half of the fixing block, and the semicircular wire grooves of the two can be matched with each other up and down to form an instrument wire hole.
[0008] Furthermore, there are more than one instrument line holes, and each instrument line hole is independent of each other.
[0009] Furthermore, an air passage is provided through the upper half of the fixing block or the lower half of the fixing block; and the middle portion of the air passage is connected to the instrument line hole.
[0010] Specifically, the air passage is provided with at least one air inlet and at least one air outlet.
[0011] Specifically, the air inlet and the instrument line hole are both located on the front end surface of the upper half of the fixing block or the lower half of the fixing block.
[0012] Specifically, the exhaust port is located on the lateral surface of the upper half of the fixing block or the lower half of the fixing block.
[0013] Furthermore, a detachable wire plug is provided at the exhaust port.
[0014] Furthermore, sealing rubber pads are evenly distributed around the upper half of the fixing block and the lower half of the fixing block, so that a sealed space can be formed on the fitting surface between the upper half of the fixing block and the lower half of the fixing block.
[0015] Specifically, threaded holes for bolt fasteners to penetrate longitudinally are reserved around the upper half and the lower half of the fixing block respectively; the bolt fasteners are a group, and the bottom screw rods are fixed to the bolt fasteners below after passing through the threaded holes respectively, and a gasket is arranged between the top nut of the bolt fastener and the upper surface of the fixing block. Beneficial Effects
[0016] (1) The probe wire fixing structure can achieve interference or overfit between the probe wire and the instrument wire hole, so that the probe wire is fixed and does not move. It has been applied to the unit and achieved good results. The unit runs smoothly and no problems such as probe wire breakage and warping have occurred. It has opened up a new way for fixing the unit probe wire and has a simple structure. It is worth promoting widely on units of the same type and industry.
[0017] (2) Large centrifugal compressor units are mostly used in oil refining, petrochemicals, and coal chemical industries, and have large vibrations. The material of the probe line is prone to corrosion and produces significant impedance, resulting in obstruction or interruption of signal transmission. The probe line fixing structure achieves corrosion protection by setting an air channel connected to the instrument line hole in the fixing block, and injecting gas to isolate the probe line from contact with corrosive gases such as ammonia and hydrogen sulfide in the outside world, while using gas positive pressure to achieve explosion-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, and the above and / or other advantages of the present invention will become more clear.
[0019] Figure 1 It is a schematic diagram of the overall structure of the probe line fixing structure of the large centrifuge unit.
[0020] Figure 2 It is a cross-sectional view of the instrument line hole and the air passage in the probe line fixing structure.
[0021] Figure 3 It is a schematic diagram of the longitudinal section structure of the probe line fixing structure.
[0022] Wherein, each reference numeral represents:
[0023] 1-upper half of the fixing block; 2-lower half of the fixing block; 3-bolt fasteners; 4-instrument line hole; 5-air passage; 51-air inlet; 52-exhaust port; 53-thread plug; 6-sealing pad; 7-threaded hole; 8-gasket;
[0024] 100-Watt Block. DETAILED DESCRIPTION
[0025] The present invention can be better understood according to the following embodiments.
[0026] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.
[0027] Combination Figure 1 As shown, the probe line fixing structure of the large centrifuge unit includes a fixing block upper half 1, a fixing block lower half 2 and bolt fasteners 3; the fixing block upper half 1 and the fixing block lower half 2 are stacked and arranged on the tile seat 100 of the centrifuge unit, and are fixed on the tile seat 100 by a group of bolt fasteners 3 penetrating the fixing block upper half 1 and the fixing block lower half 2; an instrument line hole 4 for the probe line 200 to pass through is reserved between the fixing block upper half 1 and the fixing block lower half 2, and the probe line 200 is clamped and fixed up and down by the fixing block upper half 1 and the fixing block lower half 2.
[0028] The sizes of the upper half 1 and the lower half 2 of the fixing block are determined according to the center position of the probe hole where the tile seat 100 is located, that is, to ensure that the probe hole of the probe line fixing structure is concentric with the probe hole of the tile seat 100.
[0029] The probe hole diameter of the probe wire fixing structure should be slightly smaller than the diameter of the probe wire to ensure interference or overfit, so that the probe wire is fixed and does not move around, and is not affected by the vortex of the lubricating oil.
[0030] Combination Figure 2 The lower surface of the upper half 1 of the fixed block and the upper surface of the lower half 2 of the fixed block are respectively provided with corresponding semicircular wire grooves, and the semicircular wire grooves of the two can be matched with each other up and down to form an instrument wire hole 4.
[0031] In some embodiments, there are more than one instrument line hole 4, each of which is independent of each other and is used for installing and fixing different probe lines respectively.
[0032] Combination Figure 2 and Figure 3 In some embodiments, an air passage 5 is also provided through the upper half 1 of the fixing block or the lower half 2 of the fixing block; the middle portion of the air passage 5 is connected to the instrument line hole 4.
[0033] In some embodiments, the air channel 5 is provided with at least one air inlet 51 and at least one air outlet 52 .
[0034] In some embodiments, the air inlet 51 and the instrument line hole 4 are both located on the front end surface of the upper half 1 of the fixing block or the lower half 2 of the fixing block.
[0035] In some embodiments, the exhaust port 52 is located on the lateral surface of the upper half 1 of the fixing block or the lower half 2 of the fixing block.
[0036] In some embodiments, a detachable wire plug 53 is also provided at the exhaust port 52 .
[0037] In some embodiments, sealing pads 6 are evenly distributed around the upper half 1 of the fixing block and the lower half 2 of the fixing block, so that a sealed space can be formed on the fitting surface between the upper half 1 of the fixing block and the lower half 2 of the fixing block.
[0038] In some embodiments, threaded holes 7 for bolt fasteners 3 to penetrate longitudinally are reserved around the upper half 1 of the fixing block and the lower half 2 of the fixing block; the bolt fasteners 3 are a group, and the bottom screw rods are fixed to the bolt fasteners 3 below after passing through the threaded holes 7 respectively, and a gasket 8 is arranged between the top nut of the bolt fastener 3 and the surface of the upper half 1 of the fixing block.
[0039] When using, first measure the height from the center hole of the bearing probe to the 100 reference plane of the bearing seat (i.e. the reference plane where the instrument block is installed), such as 10mm. Measure the diameter of the probe line, such as 6mm.
[0040] Then, drill a φ5.8mm hole (slightly smaller than the probe wire diameter) in the instrument block blank (rectangle), ensuring that the center of the hole is 10mm away from the reference surface where the instrument block is installed.
[0041] Then, along the center of the drilled φ5.8mm hole, the card block is cut into two halves to form the upper half 1 of the fixed block and the lower half 2 of the fixed block, so as to facilitate the insertion of the probe line. At the same time, an air passage 5 connected to the instrument line hole 4 is opened inside the upper half 1 of the fixed block.
[0042] Finally, place the block on the tile base reference surface, ensure that the center hole is concentric with the center hole of the probe on the tile, mark the position of the block, drill two bolt holes for fixing the block on the block and tile base reference surface, and tap the holes on the tile base reference surface to install the bolts.
[0043] During use, gas is injected into the air channel 5 to isolate the probe line from contact with corrosive gases such as ammonia and hydrogen sulfide in the outside world to achieve corrosion protection, and at the same time, explosion protection is achieved by using positive gas pressure.
[0044] The utility model provides a concept and method for fixing the probe line structure of a large centrifuge unit. There are many methods and ways to implement the technical solution. The above is only the preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.
Claims
1. A large centrifuge unit probe line fixing structure, characterized in that: The invention comprises an upper fixing block (1), a lower fixing block (2) and a bolt fastener (3); the upper fixing block (1) and the lower fixing block (2) are stacked and arranged on a tile seat (100) of a centrifugal unit, and are fixed to the tile seat (100) by a group of bolt fasteners (3) penetrating the upper fixing block (1) and the lower fixing block (2); an instrument line hole (4) for a probe line to pass through is reserved between the upper fixing block (1) and the lower fixing block (2), and the probe line is clamped and fixed by the upper fixing block (1) and the lower fixing block (2) up and down.
2. The large centrifuge unit probe line fixing structure according to claim 1, characterized in that: The lower surface of the upper half (1) of the fixing block and the upper surface of the lower half (2) of the fixing block are respectively provided with corresponding semicircular wire grooves, and the semicircular wire grooves of the two can be matched with each other up and down to form an instrument wire hole (4).
3. The large centrifuge unit probe line fixing structure according to claim 1, characterized in that: There are more than one instrument line hole (4).
4. The large centrifuge unit probe line fixing structure according to claim 1, characterized in that: An air passage (5) is also provided through the upper half (1) or the lower half (2) of the fixed block; the middle portion of the air passage (5) is connected to the instrument line hole (4).
5. The large centrifuge unit probe line fixing structure according to claim 4, characterized in that: The air channel (5) is provided with at least one air inlet (51) and at least one air outlet (52).
6. The large centrifuge probe line fixing structure according to claim 5, characterized in that: The air inlet (51) and the instrument line hole (4) are both located on the front end surface of the upper half (1) of the fixing block or the lower half (2) of the fixing block.
7. The large centrifuge unit probe line fixing structure according to claim 5, characterized in that: The exhaust port (52) is located on the lateral surface of the upper half (1) of the fixing block or the lower half (2) of the fixing block.
8. The large centrifuge unit probe line fixing structure according to claim 5, characterized in that: The exhaust port (52) is also provided with a detachable thread plug (53).
9. The large centrifuge unit probe line fixing structure according to claim 4, characterized in that: Sealing rubber pads (6) are evenly distributed around the upper half (1) and the lower half (2) of the fixing block, so that a sealing space can be formed at the fitting surface between the upper half (1) and the lower half (2) of the fixing block.
10. The large centrifuge unit probe line fixing structure according to claim 1, characterized in that: The upper half (1) and the lower half (2) of the fixing block are respectively provided with threaded holes (7) for the bolt fasteners (3) to penetrate longitudinally; the bolt fasteners (3) are a group, and the bottom screw rods are respectively inserted through the threaded holes (7) to be fixed to the bolt fasteners (3) below, and a gasket (8) is provided between the top nut of the bolt fastener (3) and the surface of the upper half (1) of the fixing block.