Variable spring hanger

Abstract

The invention relates to the field of steam-water pipeline hanging brackets, and discloses a variable spring hanging bracket which comprises a root assembly, a spring assembly, a connecting piece assembly and a pipe assembly which are sequentially connected from top to bottom, and a steam-water pipeline is fixed in the pipe assembly; wherein the spring assembly comprises a spring housing and a spring indication assembly, and a spring and a long screw rod arranged in the spring are arranged in the spring housing; the spring indicating assembly comprises an indicating plate which is arranged on the spring housing in an up-down sliding mode, the indicating plate is connected with the upper end of the long screw rod, and the indicating plate can extrude the spring; the outer side face of the indicating plate is an inclined face, the indicating plate is covered with a microprism type reflective film, the variable spring hanging bracket is provided with the spring indicating assembly, so that an operator can conveniently observe the state of a unit, and the observation accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steam and water pipeline hangers, in particular to a variable spring hanger. Background Art

[0002] The function of the variable spring hanger of the steam-water pipeline in the power plant is to bear the gravity of the pipeline. As the unit's operating time accumulates, the state of the pipe system support hanger will change. Once the support hanger partially or completely loses its function, the pipeline load will change, and the allowable stress of the pipe may be exceeded locally, shortening the expected service life of the pipeline.

[0003] The variable spring hanger currently used in power plants is a fixed spring hanger, which can be used by simply removing the locking device during installation. Daily maintenance requirements: the indication position of the variable spring hanger is in the cold indication position when the machine is stopped, and in the hot indication position when the machine is started.

[0004] The daily maintenance of steam and water pipe supports and hangers in the steam engine room of a thermal power plant is generally carried out in accordance with the "DLT 616-2006 Guidelines for the Maintenance and Adjustment of Steam and Water Pipes and Supports and Hangers in Thermal Power Plants". The specification requires that the daily maintenance inspection of supports and hangers should be mainly visual inspection. Professionals who inspect supports and hangers usually use tools such as flashlights, telescopes, and cameras to assist in the inspection.

[0005] The existing spring hanger has the following problems when in use: The core method of existing macroscopic inspection of supports and hangers is still visual inspection, which uses the method of close field of vision, including setting up scaffolding and directly close field of vision or indirectly close field of vision through telescope. In these methods, observers observe the hanger from below. The indicator plate and the sign on the hanger will cause a large parallax problem due to the angle problem. In addition, the existing displacement sign itself is made of limited materials, with poor normal reflectivity and diffuse reflection. When the distance is far and the light is dim, it cannot play an auxiliary role and cannot accurately and quickly read the hanger information. At the same time, there are a large number of springs on site, and it is impossible to quickly locate the information of the faulty spring.

[0006] In view of this, it is necessary to design a new variable spring hanger that can overcome the above technical difficulties and effectively solve or alleviate the above technical difficulties. Summary of the invention

[0007] The basic technical problem to be solved by the present invention is to provide a variable spring hanger, which can quickly and accurately view the information of the hanger.

[0008] In order to achieve the above-mentioned purpose, the present invention provides a variable spring hanger, which includes a root component, a spring component, a connector component and a pipe component connected in sequence from top to bottom, and a steam-water pipe is fixed in the pipe component; wherein the spring component includes a spring cover and a spring indicator component, and a spring and a long screw rod are arranged in the spring in the spring cover; the spring indicator component includes an indicator plate which is slidably arranged on the spring cover up and down, the indicator plate is connected to the upper end of the long screw rod, and the indicator plate can squeeze the spring; the outer side surface of the indicator plate is an inclined surface, and the indicator plate is covered with a micro-prismatic reflective film.

[0009] Preferably, the angle between the inclined surface of the indicator plate and the horizontal plane is 50° to 70°.

[0010] Preferably, the spring indication assembly also includes a position identification plate and a spring parameter information plate arranged on the spring cover, the outer side surfaces of the position identification plate and the spring parameter information plate are both arranged as inclined surfaces, and the outer side surfaces of the position identification plate and the spring parameter information plate are covered with a micro-prismatic reflective film.

[0011] Preferably, the angles of the inclined surfaces of the position identification plate and the spring parameter information plate to the horizontal plane are 50° to 70° respectively.

[0012] Preferably, the spring indicating assembly further comprises a spring state display slot, the spring state display slot penetrates the spring housing, and the indicating plate is slidably disposed in the spring state display slot.

[0013] Preferably, the connector assembly includes a turnbuckle nut arranged at the lower end of the long screw, a tie rod group connected to the turnbuckle nut, and a lifting eye nut arranged at the lower end of the tie rod group.

[0014] Preferably, the tie rod assembly comprises a plurality of tie rods, and two adjacent tie rods are connected by a connecting turnbuckle nut and a nut, and the nut is suitable for abutting against the connecting turnbuckle nut.

[0015] Preferably, the pipe assembly includes at least two three-hole pipe clamps and a spring hanger positioning device arranged on the three-hole pipe clamps, and the at least two three-hole pipe clamps are used to adjust the tightness between the three-hole pipe clamps through pipe clamp bolts.

[0016] Preferably, the spring hanger positioning device comprises a connecting rod arranged on one side of the three-hole pipe clamp and a spring hanger positioning information plate arranged on the connecting rod.

[0017] Preferably, the spring assembly also includes an upper cover plate arranged at the upper end of the spring cover shell; the root assembly includes an H-shaped steel and a lifting lug arranged at the lower end of the H-shaped steel, and the lifting lug is connected to the upper cover plate; a concrete structure is arranged outside the H-shaped steel, angle steels are arranged at both ends of the H-shaped steel, embedded irons are arranged on the concrete structure, and the angle steels are connected to the embedded irons.

[0018] Through the above technical scheme, the beneficial effects of the present invention are as follows: by setting the outer side surface of the indicator plate as a slope, the reflectivity of light is improved, and by setting a micro-prismatic reflective film on the slope, it is convenient for operators to observe the status of the unit and improve the accuracy of observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a variable spring hanger disclosed in an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of a location identification plate disclosed in an embodiment of the present invention; Figure 3 is a side view of a variable spring hanger disclosed in an embodiment of the present invention.

[0020] Description of Reference Numerals 1. Root component; 11. Concrete structure; 12. Embedded iron; 13. Angle steel; 14. H-shaped steel; 15. Lifting lug; 2. Spring component; 21. Upper cover plate; 22. Spring indicator component; 221. Spring status display slot; 222. Indicator plate; 2221. Inclined surface; 23. Spring; 24. Spring cover; 25. Long screw; 26. Flower basket nut; 27. Position identification plate; 28. Spring parameter information plate; 3. Connector component; 31. Connecting flower basket nut; 32. Nut; 33. Tie rod group; 34. Lifting eye nut; 4. Pipe component; 41. Three-hole pipe clamp; 42. Spring hanger positioning device; 421. Spring hanger positioning information plate; 422. Connecting rod; 43. Pipe clamp bolt; 5. Steam and water pipeline. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0022] join Figures 1 to 3 The present invention provides a variable spring hanger, which includes a root component 1, a spring component 2, a connector component 3 and a pipe component 4 which are connected in sequence from top to bottom, and a soda pipe 5 is fixed in the pipe component 4; wherein the spring component 2 includes a spring housing 24 and a spring indicating component 22, and a spring 23 and a long screw 25 arranged in the spring 23 are arranged in the spring housing 24; the spring indicating component 22 includes an indicating plate 222 which is slidably arranged on the spring housing 24 up and down, and the indicating plate 222 is connected to the upper end of the long screw 25, and the indicating plate 222 can squeeze the spring 23; the outer side surface of the indicating plate 222 is an inclined surface 2221, and the indicating plate 222 is covered with a micro-prismatic reflective film.

[0023] It should be noted that the variable spring hanger provided by the present invention has a simple structure, which can facilitate the operator to quickly view the hanger information, improve the structural stability of the hanger indicator, and facilitate the use and maintenance of the hanger. The "from top to bottom" mentioned in the above technical solution is as follows: Figure 1 Shown is from the root assembly 1 to the tube assembly 4.

[0024] It is understandable that if Figure 1 As shown, the outer side surface of the indicator plate 222 is a slope 2221, which is convenient for receiving light source for reflection in a dim environment. The color of the micro-prismatic reflective film can be yellow, and it is attached to the slope 2221 of the indicator plate 222. The yellow micro-prismatic reflective film has high penetration in a dim environment, which is convenient for the operator to observe.

[0025] Preferably, the angle between the inclined surface 2221 of the indicator plate 222 and the horizontal plane is 50°-70°. Figure 1 As shown, the angle between the inclined surface 2221 of the indicator plate 222 and the horizontal plane can be 60°, so that the inclined surface 2221 of the indicator plate 222 can structure most of the flashlight reflected light, so that even if the observer is obliquely below the steam-water pipe 5 in the steam engine room, the large parallax caused by the angle observation problem will not cause misjudgment of the spring reading and cause a large displacement deviation, which is convenient for the operator to observe.

[0026] Preferably, the spring indication assembly 22 also includes a position identification plate 27 and a spring parameter information plate 28 arranged on the spring cover 24, the outer side surfaces of the position identification plate 27 and the spring parameter information plate 28 are both set as inclined surfaces, and the outer side surfaces of the position identification plate 27 and the spring parameter information plate 28 are covered with a micro-prismatic reflective film.

[0027] It is understandable that if Figure 2As shown, the position identification plate 27 and the spring parameter information plate 28 are raised on the spring cover 24 to prevent the anti-corrosion personnel of the thermal power plant from mistakenly pressing the position identification plate 27 and the spring parameter information plate 28 against the spring cover 24 for painting. Micro-prismatic reflective films can be arranged on the position identification plate 27 from top to bottom. The micro-prismatic reflective film located on the top can be blue, and the micro-prismatic reflective film located on the bottom can be red. The blue micro-prismatic reflective film indicates the cold state of the unit in the steam engine room of the thermal power plant, at which time the pipeline temperature is room temperature, and the red micro-prismatic reflective film indicates the hot state of the unit in the steam engine room of the thermal power plant, at which time the pipeline temperature is the operating condition temperature. The micro-prismatic reflective film can be made into a 15mm diameter button-type reflector or a 10*15mm long strip reflector, which reflects The light mirror is welded to other metal parts through the metal buckle on the back. The yellow micro-prismatic reflective film set on the inclined surface 2221 of the indicator plate 222 should move between the blue micro-prismatic reflective film and the red micro-prismatic reflective film. In the shutdown state, the yellow micro-prismatic reflective film overlaps with the blue micro-prismatic reflective film, and in the startup state, the yellow micro-prismatic reflective film overlaps with the red micro-prismatic reflective film, which is the best state. At this time, the spring force is moderate, avoiding the stress concentration of the pipe elbows and three heads caused by excessive or insufficient spring force of the spring hanger. The stress may cause safety problems such as deformation and cracks of the pipe, affecting the stability and service life of the steam-water pipe 5 in the steam engine room. When installing the variable force spring support hanger, the direction of the position identification plate 27 and the spring parameter information plate 28 should be adjusted for easy observation.

[0028] Preferably, the angles of the inclined planes of the position identification plate 27 and the spring parameter information plate 28 to the horizontal plane are 50° to 70° respectively. Figure 1 As shown, the angle between the inclined surface of the position identification plate 27 and the spring parameter information plate 28 and the horizontal plane can be 60°, so that the inclined surface 2221 of the indicator plate 222 can structure most of the flashlight reflected light, which is convenient for the operator to observe.

[0029] Preferably, the spring indicating assembly 22 further includes a spring state display slot 221 , the spring state display slot 221 penetrates the spring housing 24 , and the indicating plate 222 is slidably disposed in the spring state display slot 221 .

[0030] It is understandable that if Figure 1 and Figure 2 As shown, the indicator plate 222 slides in the spring status display slot 221, and the position identification plate 27 can be set on one side of the spring status display slot 221. When the unit in the steam engine room of the thermal power plant is in a hot state, the indicator plate 222 slides to the top of the spring status display slot 221, indicating the red micro-prismatic reflective film on the position identification plate 27. When the unit in the steam engine room of the thermal power plant is in a cold state, the indicator plate 222 slides to the bottom of the spring status display slot 221, indicating the blue micro-prismatic reflective film on the position identification plate 27, so that the operator can identify the status of the unit.

[0031] Preferably, the connector assembly 3 includes a turnbuckle nut 26 disposed at the lower end of the long screw rod 25 , a tie rod set 33 connected to the turnbuckle nut 26 , and a lifting eye nut 34 disposed at the lower end of the tie rod set 33 .

[0032] It is understandable that if Figure 1 As shown, one end of the long screw 25 away from the root component 1 is connected to the tie rod group 33 through the basket nut 26, and the tie rod group 33 is connected to the pipe component 4 through the eye nut 34. The movement of the pipe component 4 drives the movement of the long screw 25 through the tie rod group 33, thereby improving the stability of the spring hanger.

[0033] Preferably, the tie rod assembly 33 includes a plurality of tie rods, and two adjacent tie rods are connected by connecting the turnbuckle nut 31 and the nut 32 , and the nut 32 abuts against the connecting turnbuckle nut 31 .

[0034] It is understandable that if Figure 1 As shown, connecting basket nuts 31 can be added to connect more pull rods to each other and extend the total length of the pull rods. The connecting basket nuts 31 are abutted with nuts 32 to prevent slipping, so that the angle between the connecting component 3 and the vertical line under cold and hot conditions should not exceed 4°, thereby improving the stability of the spring hanger.

[0035] Preferably, the pipe assembly 4 includes at least two three-hole pipe clamps 41 and a spring hanger positioning device 42 arranged on the three-hole pipe clamps 41 , and the at least two three-hole pipe clamps 41 are used to adjust the tightness between the three-hole pipe clamps 41 through a pipe clamp bolt 43 .

[0036] It can be understood that the material of the three-hole pipe clamp 41 is consistent with that of the steam-water pipe 5, the inner diameter of the three-hole pipe clamp 41 is the outer diameter of the steam-water pipe 5 in the steam engine room, and the three-hole pipe clamp 41 is tightened by the pipe clamp bolt 43, so that the three-hole pipe clamp 41 can stably clamp the steam-water pipe 5. The three-hole pipe clamp 41 is a non-integral pipe portion. When the angle between the connecting component 3 of the spring hanger and the vertical line exceeds 4° under cold and hot conditions, it is offset and its installation position is half of the opposite direction of the thermal displacement of the pipeline, that is, the position of the three-hole pipe clamp 41 relative to the upper ear 15 is offset by half of the opposite direction of the thermal displacement of the pipeline, so as to improve the stability of the spring hanger.

[0037] Preferably, the spring hanger positioning device 42 includes a connecting rod 422 arranged on one side of the three-hole pipe clamp 41 and a spring hanger positioning information plate 421 arranged on the connecting rod 422, wherein the spring hanger steam-water pipeline 5 is made of the same material and can be a stainless steel metal information plate, which contains the corresponding pipeline and hanger number information, and the connecting rod 422 is connected to the three-hole pipe clamp 41 by threads or clamps. The spring hanger positioning information plate 421 is arranged on the three-hole pipe clamp 41 to make it easier for operators to notice and observe.

[0038] Preferably, the spring assembly 2 also includes an upper cover plate 21 arranged at the upper end of the spring cover shell 24; the root assembly 1 includes an H-shaped steel 14 and a lifting lug 15 arranged at the lower end of the H-shaped steel 14, the lifting lug 15 is connected to the upper cover plate 21, angle steels 13 are arranged at both ends of the H-shaped steel 14, and embedded iron 12 is arranged on the concrete structure 11, and the angle steel 13 is connected to the embedded iron 12.

[0039] It is understandable that if Figure 1 and Figure 3 As shown, an upper cover plate 21 is provided on the spring housing 24, the upper cover plate 21 is connected to the lifting lug 15 by bolts, the lifting lug 15 is connected to the H-shaped steel 14 by welding, and the fillet weld between the hanging plate and the upper cover plate 21 ensures sufficient excess height, thereby improving the stability of the spring hanger.

[0040] In order to better understand the technical solution and method of use of the present invention, the following Figures 1 to 3 The preferred embodiments are described with relatively comprehensive preferred technical features.

[0041] The root component 1 includes an H-shaped steel 14 and a lifting lug 15 arranged under the H-shaped steel 14. Angle steels 13 are arranged at both ends of the H-shaped steel 14 to connect with the embedded iron 12 in the concrete structure 11, and the H-shaped steel 14 is fixed in the concrete structure 11. An upper cover plate 21 is arranged on the spring cover 24, and the upper cover plate 21 is fixedly connected to the lifting lug 15 by bolts. At the same time, the fillet weld between the hanging plate and the upper cover plate 21 ensures sufficient excess height. A spring state display groove 221 is opened on the spring cover 24, and a spring indication component 22 is arranged in the spring cover 24, wherein the spring indication component 22 includes a spring state display groove 221 slidably arranged in the spring state display groove 221. Indicator plate 222, a long screw 25 is connected under the indicator plate 222, and the long screw 25 is set in the spring 23. A position identification plate 27 and a spring parameter information plate 28 are set on one side of the spring state display slot 221. The outer side of the inclined surface 2221 of the indicator plate 222, the position identification plate 27 and the outer side of the spring parameter information plate 28 are all inclined surfaces with an inclination angle of 60°, wherein the inclined surface 2221 is bonded with a yellow micro-prismatic reflective film, the upper end of the position identification plate 27 is bonded with a blue micro-prismatic reflective film, and the lower end of the position identification plate 27 is bonded with a red micro-prismatic reflective film. The micro-prismatic reflective film can be made into a 15mm diameter A button-type reflector or a 10*15mm long strip reflector, the reflector is welded to other metal parts through a metal buckle on the back, the yellow micro-prismatic reflective film set on the inclined surface 2221 of the indicator plate 222 should move between the blue micro-prismatic reflective film and the red micro-prismatic reflective film to indicate the current state of the unit, a connector assembly 3 is set under the long screw 25, wherein the connector assembly 3 includes a basket nut 26 set at the lower end of the long screw 25, a tie rod group 33 connected to the basket nut 26, and a ring nut 34 set at the lower end of the tie rod group 33, the tie rod group 33 includes a plurality of tie rods, and two adjacent tie rods are connected by a basket nut The nut 31 is connected to the nut 32, and the nut 32 abuts against the connecting basket nut 31. The connecting basket nuts 31 can be added to connect more pull rods to each other and extend the total length of the pull rods. The nut 32 abuts against the connecting basket nut 31 to prevent slipping. The pull rod is connected to the three-hole pipe clamp 41. The three-hole pipe clamp 41 is tightened and clamped to the steam-water pipe 5 set in the three-hole pipe clamp 41 by the pipe clamp bolt 43. The three-hole pipe clamp 41 is connected to the spring hanger positioning information plate 421 through the connecting rod 422. The spring hanger positioning information plate 421 is set on the three-hole pipe clamp 41 to make it easier for operators to pay attention, facilitate observation, and quickly locate the faulty spring information.

[0042] The variable spring hanger provided by the present invention improves the reflectivity of light by setting the outer side surface of the indicator plate 222 as an inclined surface 2221, and provides a micro-prismatic reflective film on the inclined surface 2221, so that the operator can observe the status of the unit easily and improve the accuracy of observation.

[0043] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any appropriate manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A variable spring hanger, characterized in that: From top to bottom, it comprises a root component (1), a spring component (2), a connector component (3) and a pipe component (4) which are connected in sequence, wherein a steam-water pipeline (5) is fixed inside the pipe component (4); wherein: The spring assembly (2) comprises a spring housing (24) and a spring indicating assembly (22); a spring (23) and a long screw (25) arranged in the spring (23) are arranged in the spring housing (24); The spring indicating assembly (22) comprises an indicating plate (222) slidably disposed on the spring housing (24) up and down, the indicating plate (222) being connected to the upper end of the long screw rod (25), and the indicating plate (222) being capable of pressing the spring (23); The outer side surface of the indication plate (222) is an inclined surface (2221), and the indication plate (222) is covered with a micro-prismatic reflective film.

2. The variable spring hanger according to claim 1, characterized in that: The angle between the inclined surface (2221) of the indicator plate (222) and the horizontal plane is 50-70°.

3. The variable spring hanger according to claim 1, characterized in that: The spring indicating assembly (22) further comprises a position identification plate (27) and a spring parameter information plate (28) arranged on the spring housing (24); the outer side surfaces of the position identification plate (27) and the spring parameter information plate (28) are both arranged as inclined surfaces, and the outer side surfaces of the position identification plate (27) and the spring parameter information plate (28) are both covered with the micro-prismatic reflective film.

4. The variable spring hanger according to any one of claims 1 to 3, characterized in that: The angles of the inclined surfaces of the position identification plate (27) and the spring parameter information plate (28) with the horizontal plane are respectively 50° to 70°.

5. The variable spring hanger according to any one of claims 1 to 3, characterized in that: The spring indicating assembly (22) further comprises a spring state display slot (221), wherein the spring state display slot (221) penetrates the spring housing (24), and the indicating plate (222) is slidably disposed in the spring state display slot (221).

6. The variable spring hanger according to claim 1, characterized in that: The connecting member assembly (3) comprises a basket nut (26) arranged at the lower end of the long screw rod (25), a tie rod group (33) connected to the basket nut (26), and a lifting eye nut (34) arranged at the lower end of the tie rod group (33).

7. The variable spring hanger according to claim 6, characterized in that: The tie rod group (33) comprises a plurality of tie rods, and two adjacent tie rods are connected via a connecting flower basket nut (31) and a nut (32), wherein the nut (32) abuts against the connecting flower basket nut (31).

8. The variable spring hanger according to any one of claims 1 to 4, characterized in that: The pipe assembly (4) comprises at least two three-hole pipe clamps (41) and a spring hanger positioning device (42) arranged on the three-hole pipe clamps (41); the at least two three-hole pipe clamps (41) are used to adjust the tightness between the three-hole pipe clamps (41) via pipe clamp bolts (43).

9. The variable spring hanger according to claims 1-8, characterized in that: The spring hanger positioning device (42) comprises a connecting rod (422) arranged on one side of the three-hole pipe clamp (41) and a spring hanger positioning information plate (421) arranged on the connecting rod (422).

10. The variable spring hanger according to claim 1, characterized in that: The spring assembly (2) further comprises an upper cover plate (21) arranged on the upper end of the spring housing (24); The root component (1) comprises an H-shaped steel (14) and a lifting lug (15) arranged at the lower end of the H-shaped steel (14), wherein the lifting lug (15) is connected to the upper cover plate (21); A concrete structure (11) is arranged outside the H-shaped steel (14), angle steels (13) are arranged at both ends of the H-shaped steel (14), embedded iron (12) is arranged on the concrete structure (11), and the angle steel (13) is connected to the embedded iron (12).

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