Throttling and pressure reducing device

Abstract

The utility model discloses a throttling depressurization device which comprises a shell, fasteners, inner core installation pieces, an inner core, a throttling plate structure and a water inlet end protection structure, a through hole is formed in the shell, the two fasteners are assembled at the two ends of the through hole respectively, and the two inner core installation pieces are assembled in the through hole respectively and located on the inner sides of the fasteners. The water inlet end protection structure is assembled at the outer end of one inner core installation part, the inner core is assembled between the two inner core installation parts, and the throttling plate structure is assembled in the through hole and located between the inner core installation parts. According to the throttling and pressure-reducing device, the pressure-reducing cavity is formed between the positioning cylinder and the throttling plate, and the throttling plate structure is arranged in the shell at different angles, so that the flow speed and pressure of a medium can be effectively reduced, the scouring of the medium to a rear pipeline after passing through the throttling and pressure-reducing device is reduced, and the service life of the pipeline can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of throttling equipment, and in particular provides a throttling and pressure reducing device. Background Art

[0002] In the current hot rolling process of steel strip, a high-pressure water descaling process is required before rolling. The main function is to spray high-pressure water onto the surface of the rolled piece to remove the iron oxide scale produced in the heating furnace, so as to improve the surface quality of the rolled steel strip. The high-pressure water is produced by the continuous operation of a multi-stage centrifugal pump. When water descaling is not performed, a part of the water needs to be discharged through another pipeline to avoid overheating of the multi-stage centrifugal pump.

[0003] In reality, other pipelines mostly adopt multi-stage throttling and pressure reduction methods, with multiple throttling plates arranged in parallel, each throttling plate having a throttling hole, and throttling and pressure reduction work is performed through multiple throttling plates. The main disadvantage is that the flow rate of water out of the throttling device is relatively fast, which has a relatively serious impact on the subsequent pipelines. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a throttling and pressure reducing device.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a throttling and pressure reducing device, comprising a shell, a fastener, an inner core mounting piece, an inner core, a throttling plate structure and a water inlet end protection structure, wherein a through hole is opened inside the shell, two fasteners are respectively assembled at the two ends of the through hole, two inner core mounting pieces are respectively assembled in the through hole and located inside the fastener, an outer end of one inner core mounting piece is assembled with a water inlet end protection structure, the inner core is assembled between the two inner core mounting pieces, and the throttling plate structure is assembled in the through hole and located between the inner core mounting pieces;

[0006] The throttle plate structure includes a positioning tube and a throttle plate. The positioning tube is plugged into the through hole. The throttle plate is integrally formed on the inner wall of the positioning tube. A pressure reduction chamber is formed between the positioning tube and the throttle plate. Small holes are unevenly opened on the surface of the throttle plate.

[0007] Furthermore, the outer surface of the inner core is alternately sleeved with flow guide sleeves and flow guide sleeve spacers, and the outer surface of the flow guide sleeve is integrally formed with an annular flow guide convex plate.

[0008] Furthermore, the inner core mounting part includes a mounting tube and a limit plate, the four limit plates are welded to the inner wall of the mounting tube in a cross shape, and the outer end of the inner core passes through the inner end of the limit plate, the outer surfaces of both ends of the inner core are provided with threads, and both ends of the inner core are screwed with fastening nuts.

[0009] Furthermore, the water inlet end protection structure includes a mounting plate and a protection block, the mounting plate is composed of an annular plate of an outer ring and a support plate integrally formed on the inner wall of the annular plate, there are four support plates in total, and the width of the support plate is the same as the width of the limit plate, and the protection block is fixedly installed on the inner end outer surface of the support plate.

[0010] Furthermore, the outer surface of the protection block is an arc-shaped surface, and the diameter of the protection block is larger than the outer diameter of the fastening nut.

[0011] Furthermore, a positioning groove is formed at the outer end of the installation tube, and a positioning block corresponding to the position of the positioning groove is fixedly mounted on the surface of the annular plate.

[0012] Furthermore, a positioning tube spacer is provided between adjacent throttle plate structures.

[0013] Furthermore, an end spacer is provided at the inner end of the fastener.

[0014] The beneficial effects of using the utility model are:

[0015] 1. The utility model designs a throttle plate structure, sets a plurality of unevenly distributed small holes on the throttle plate, cooperates with the pressure reduction chamber formed between the positioning cylinder and the throttle plate, and places the throttle plate structure at different angles in the shell, which can effectively reduce the flow rate and pressure of the medium, thereby reducing the scouring of the subsequent pipeline after the medium passes through the throttling and pressure reduction device, and can extend the service life of the pipeline.

[0016] 2. The utility model arranges an inner core in the shell, and a guide sleeve equipped with an annular guide convex plate is arranged on the inner core, which can guide the medium, make the medium more evenly distributed in the pressure reduction chamber, achieve better pressure reduction, and avoid the medium directly impacting the throttle plate structure, thereby protecting the throttle plate structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front sectional view of the utility model.

[0018] Figure 2 It is a left view of the throttle plate structure of the utility model.

[0019] Figure 3 It is a left view of the water inlet end protection structure of the utility model.

[0020] Figure 4 For this utility model Figure 1 A partial enlarged view of part a.

[0021] The reference numerals include: 1, shell, 2, fastener, 3, inner core mounting part, 31, mounting cylinder, 32, limit plate, 33, positioning groove, 4, inner core, 41, guide sleeve, 42, guide sleeve spacer, 5, throttle plate structure, 51, positioning cylinder, 52, throttle plate, 53, small hole, 6, water inlet end protection structure, 61, mounting plate, 62, protection block, 63, positioning block, 7, positioning cylinder spacer, 8, end spacer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figures 1 to 4 A throttling and pressure reducing device comprises a shell 1, a fastener 2, an inner core mounting piece 3, an inner core 4, a throttling plate structure 5 and a water inlet end protection structure 6. A through hole is opened inside the shell 1, two fasteners 2 are respectively assembled at the two ends of the through hole, two inner core mounting pieces 3 are respectively assembled in the through holes and located on the inner side of the fasteners 2, an outer end of an inner core mounting piece 3 is assembled with a water inlet end protection structure 6, the inner core 4 is assembled between the two inner core mounting pieces 3, and the throttling plate structure 5 is assembled in the through hole and located between the inner core mounting pieces 3.

[0024] The fastener 2 is used to clamp and fix the inner core mounting member 3, the throttle plate structure 5 and the water inlet end protection structure 6 installed in the housing 1.

[0025] The inner core 4 is mounted on the inner core mounting member 3 and mainly serves as a flow guide.

[0026] The throttle plate structure 5 plays a major role in throttling and reducing pressure.

[0027] The water inlet end protection structure 6 is used to protect the water inlet end of the inner core 4 .

[0028] like Figure 1 and Figure 2 As shown, the throttle plate structure 5 includes a positioning cylinder 51 and a throttle plate 52. The positioning cylinder 51 is plugged into the through hole, and a pressure reduction chamber is formed between the positioning cylinder and the throttle plate 52. The throttle plate 52 is integrally formed on the inner wall of the positioning cylinder 51, and small holes 53 are unevenly opened on the surface of the throttle plate 52.

[0029] The throttle plate structure 5 is inserted into the through hole of the shell, so that it is easy to replace and repair.

[0030] The setting of the pressure reducing chamber allows the water flow to enter a wider space after passing through the small hole 53, which can effectively relieve the pressure on the water flow.

[0031] By installing a plurality of throttle plate structures 5, a plurality of pressure reduction chambers can be formed, and the water flow can be pressure reduced in multiple stages.

[0032] The small holes 53 are the main channels for water flow. The uneven opening of the small holes 53 on the throttle plate 52 can make different small holes 53 be located at different heights. At the same time, when the throttle plate structure 5 is placed in the through hole, it needs to be placed at different rotation angles, so that the positions of the small holes 53 on different throttle plate structures 5 will be different, which can play a throttling role. In addition, according to the amount of water in the pressure reduction chamber, the amount of water passing through the throttle plate 52 can be automatically adjusted to play a role in reducing pressure, ultimately reducing the scouring of subsequent pipelines and extending the service life of the pipelines.

[0033] Specifically, if Figure 1 As shown, the outer surface of the inner core 4 is alternately sleeved with flow guide sleeves 41 and flow guide sleeve spacers 42 , and the outer surface of the flow guide sleeve 41 is integrally formed with an annular flow guide convex plate.

[0034] The annular guide convex plate guides the water flow, so that the water flow can be distributed more evenly when flowing into the pressure reduction chamber, and prevents the water flow from directly flowing to the throttle plate 52 and causing scouring damage to the throttle plate 52.

[0035] The throttle plate 52 and the guide sleeve 41 may be sealed or have a gap, depending on the actual situation. When sealed, water can only flow through the small hole 53; when a gap is left, water can also flow through the gap, and this gap can also play a role in throttling and assisting pressure reduction.

[0036] Specifically, if Figure 1 As shown, the inner core mounting member 3 includes a mounting tube 31 and a limiting plate 32. Four limiting plates 32 are welded to the inner wall of the mounting tube 31 in a cross shape, and the outer end of the inner core 4 passes through the inner end of the limiting plate 32. The outer surfaces of both ends of the inner core 4 are provided with threads, and both ends of the inner core 4 are screwed with fastening nuts.

[0037] The water flows through the space between the mounting tube 31 and the limiting plate 32 .

[0038] Specifically, if Figure 1 and Figure 3 As shown, the water inlet end protection structure 6 includes a mounting plate 61 and a protection block 62. The mounting plate 61 is composed of an outer ring plate and a support plate integrally formed on the inner wall of the ring plate. There are four support plates in total, and the width of the support plate is the same as the width of the limiting plate 32. The protection block 62 is fixedly installed on the inner end outer surface of the support plate.

[0039] The water inlet end protection structure 6 shields the inner core 4 and the inner core mounting member 3 to prevent the high-pressure water flow entering the throttling and pressure reducing device from directly flowing to the end of the inner core 4, the inner core mounting member 3 and the fastening nut, thereby playing a protective role.

[0040] Specifically, if Figure 1 As shown, the outer surface of the protection block 62 is an arc-shaped surface, and the diameter of the protection block 62 is larger than the outer diameter of the fastening nut.

[0041] The arc-shaped surface design of the protection block 62 can guide the high-pressure water flow to the side, thereby increasing its service life.

[0042] Specifically, if Figure 1 and Figure 4 As shown, a positioning groove 33 is formed at the outer end of the mounting tube 31 , and a positioning block 63 corresponding to the position of the positioning groove 33 is fixedly mounted on the surface of the annular plate.

[0043] Through the cooperation between the positioning block 63 and the positioning groove 33 , the water inlet end protection structure 6 can be accurately installed on the inner core mounting member 3 , and the support plate can shield and protect the limit plate 32 .

[0044] Specifically, if Figure 1 As shown, a positioning tube spacer 7 is arranged between adjacent throttle plate structures 5 .

[0045] Specifically, if Figure 1 As shown, the inner end of the fastener 2 is provided with an end spacer 8 .

[0046] The guide sleeve spacer 42 and the positioning tube spacer 7 prevent wear between the adjacent inner core mounting parts 3, the throttle plate structure 5, and the guide sleeve 41. The length of the end spacer 8 can be selected by oneself to ensure that the throttle plate structure 5 in the through hole of the shell 1 can fit closely to each other to avoid leaving gaps that cause the throttle plate structure 5 to move and cause wear.

[0047] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A throttling and pressure reducing device, characterized in that: It comprises a shell, a fastener, an inner core mounting piece, an inner core, a throttle plate structure and a water inlet end protection structure, wherein a through hole is opened inside the shell, two fasteners are respectively mounted at both ends of the through hole, two inner core mounting pieces are respectively mounted in the through hole and located inside the fasteners, an outer end of one inner core mounting piece is mounted with a water inlet end protection structure, the inner core is mounted between the two inner core mounting pieces, and the throttle plate structure is mounted in the through hole and located between the inner core mounting pieces; The throttle plate structure includes a positioning tube and a throttle plate. The positioning tube is plugged into the through hole. The throttle plate is integrally formed on the inner wall of the positioning tube. A pressure reduction chamber is formed between the positioning tube and the throttle plate. Small holes are unevenly opened on the surface of the throttle plate.

2. A throttling and pressure reducing device according to claim 1, characterized in that: The outer surface of the inner core is alternately sleeved with flow guide sleeves and flow guide sleeve spacers, and the outer surface of the flow guide sleeve is integrally formed with an annular flow guide convex plate.

3. A throttling and pressure reducing device according to claim 1, characterized in that: The inner core mounting part includes a mounting tube and a limiting plate. The four limiting plates are welded to the inner wall of the mounting tube in a cross shape, and the outer end of the inner core passes through the inner end of the limiting plate. The outer surfaces of both ends of the inner core are provided with threads, and both ends of the inner core are screwed with fastening nuts.

4. A throttling and pressure reducing device according to claim 3, characterized in that: The water inlet end protection structure includes a mounting plate and a protection block. The mounting plate is composed of an annular plate of an outer ring and a support plate integrally formed on the inner wall of the annular plate. There are four support plates in total, and the width of the support plate is the same as the width of the limit plate. The protection block is fixedly installed on the inner end outer surface of the support plate.

5. A throttling and pressure reducing device according to claim 4, characterized in that: The outer surface of the protection block is an arc-shaped surface, and the diameter of the protection block is larger than the outer diameter of the fastening nut.

6. A throttling and pressure reducing device according to claim 5, characterized in that: A positioning groove is formed at the outer end of the installation cylinder, and a positioning block corresponding to the position of the positioning groove is fixedly mounted on the surface of the annular plate.

7. A throttling and pressure reducing device according to claim 1, characterized in that: Positioning tube spacers are arranged between adjacent throttle plate structures.

8. A throttling and pressure reducing device according to claim 1, characterized in that: An end spacer is arranged at the inner end of the fastener.

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