Power plant industrial steam supply flow measuring device based on heat balance

Abstract

The utility model provides a power plant industrial steam supply flow measuring device based on heat balance. The power plant industrial steam supply flow measuring device based on heat balance comprises a shell; the two installation openings are formed in the front face and the back face of the shell correspondingly, rear sealing plugs are installed in the other installation openings in the back face, a rear sealing cover is fixedly connected to the back face of each rear sealing plug, a rotating shaft is rotatably connected to the front face of each rear sealing cover, and three impellers are fixedly connected to the outer surface of each rotating shaft; a magnetic block is installed on the outer surface of one impeller, and a front sealing cover is installed on the front face of the shell through fixing bolts. According to the power plant industrial steam supply flow measuring device based on heat balance, through the design, the impeller can be independently disassembled and replaced, the disassembly and assembly difficulty is reduced, workers can conveniently replace the impeller when the impeller is damaged in the later period, and the later maintenance cost of the power plant industrial steam supply flow measuring device can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam supply flow measurement technical field especially relates to a kind of industrial steam supply flow measuring device of power plant based on heat balance. BACKGROUND

[0002] Power industry is the industrial department that coal, petroleum, etc. energy is converted into electric energy by power generation facility, and then is supplied to user as energy by power transmission, power transformation and distribution system, when the steam flow in power plant industrial pipeline is measured, measuring device needs to be used.

[0003] In the operation of power plant unit, industrial steam supply flow of power plant is directly related to the economy of unit operation, so steam turbine flowmeter is used to monitor the steam in the working process of unit.

[0004] And the impeller in the existing steam turbine flowmeter is installed inside the shell, if the impeller is damaged, it is inconvenient to disassemble and replace, if the entire steam turbine flowmeter is replaced, the cost is higher.

[0005] Therefore, it is necessary to provide an industrial steam supply flow measuring device based on heat balance of power plant to solve the above technical problems. SUMMARY

[0006] The utility model provides a kind of industrial steam supply flow measuring device based on heat balance of power plant, solve the problem of if steam turbine flowmeter impeller is damaged inconveniently disassembled and replaced, generally if entire replacement cost is higher.

[0007] To solve the above technical problems, the industrial steam supply flow measuring device based on heat balance of power plant provided by the utility model comprises: a shell,

[0008] Two installation ports, two installation ports are respectively arranged on the front and back of the shell, and the inside of the remaining back installation port is provided with a rear sealing plug, the back of the rear sealing plug is fixedly connected with a rear sealing cover, the front of the rear sealing cover is rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with three impellers, the outer surface of one of the impellers is provided with a magnetic block, the front of the shell is provided with a front sealing cover by fixed bolt, and the back of the front sealing cover is provided with a front sealing plug.

[0009] A through hole is arranged on the top of the shell, a connecting base is arranged on the top of the shell, a control device is arranged on the top of the connecting base, and an electromagnetic induction block is arranged on the bottom of the connecting base.

[0010] The rear sealing cover is installed on the back of the shell through fixing bolts, the back and the front of the shell are provided with threaded holes which are threadedly connected with the fixing bolts, the rotating shaft and the rear sealing cover are connected with the front sealing cover through bearings, and the front sealing plug and the rear sealing plug wrap the bearings to increase the sealing performance, the two ends of the rotating shaft can be square and are connected with the square openings of the inner rings of the bearings to increase the connection stability, the positions of the electromagnetic induction blocks and the magnetic blocks are corresponding, and the connection base and the through hole are sealed.

[0011] Preferably, the bottom of the control device is provided with a fixing shell, and the bottom of the fixing shell is provided with a bottom plate through four shock bolts.

[0012] The fixing shell is internally provided with a battery.

[0013] Preferably, the top of the bottom plate is provided with mounting holes near four corners, and the top of the bottom plate is provided with four clamping blocks.

[0014] Preferably, the top of the bottom plate is provided with a protective cover with a bayonet, and the top of the protective cover is provided with a leakage detection sensor through a fixing seat.

[0015] The leakage detection sensor can detect whether the shell leaks.

[0016] Preferably, the front of the protective cover is provided with a mounting base, and the front of the mounting base is provided with an operation screen.

[0017] The operation screen can set the parameters of the leakage detection sensor.

[0018] Preferably, one end of the shell is provided with a first connecting pipe with a first flange plate, and the other end of the shell is provided with a second connecting pipe with a second flange plate.

[0019] Compared with the prior art, the power plant industrial steam supply flow measuring device based on heat balance has the following beneficial effects:

[0020] The utility model provides a kind of power plant industrial steam supply flow measuring device based on heat balance, to replace when impeller in power plant industrial steam supply flow measuring device is damaged later, one intercommunication installation port is set in the front and back of shell, then only two installation ports are sealed respectively by rear sealing cover with rear sealing plug and front sealing cover with front sealing plug, and rotatingly connected with a rotating shaft with three impellers between front sealing cover and rear sealing plug, rotate impeller and rotating shaft by steam flow, so that electromagnetic induction is generated when magnetic block and electromagnetic induction block contact, then cooperate control equipment to count and convert electromagnetic signal into digital signal, so that the data of flow can be obtained, the impeller can be individually disassembled and replaced by the design, reduce dismounting difficulty, facilitate staff to replace when damaged later, beneficial to reduce the cost of power plant industrial steam supply flow measuring device later maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure diagram of a preferred embodiment of the power plant industrial steam supply flow measuring device based on heat balance provided by the utility model is shown;

[0022] Figure 2 The structure diagram of rear sealing plug provided by the utility model is shown;

[0023] Figure 3 The structure diagram of electromagnetic induction block provided by the utility model is shown; Figure 2 The enlarged view of place A shown in the figure;

[0024] Figure 4 The structure diagram of electromagnetic induction block provided by the utility model is shown;

[0025] Figure 5 The enlarged view of place B shown in the figure. Figure 2

[0026] Mark in the figure: 1, bottom plate, 2, first connecting pipe, 3, first flange, 4, protective cover, 5, operation screen, 6, mounting base, 7, bayonet, 8, fixed seat, 9, leakage monitoring sensor, 10, rear sealing plug, 11, rear sealing cover, 12, control equipment, 13, second connecting pipe, 14, second flange, 15, front sealing cover, 16, shell, 17, installation port, 18, fixed bolt, 19, front sealing plug, 20, rotating shaft, 21, magnetic block, 22, impeller, 23, fixed shell, 24, electromagnetic induction block, 25, through hole, 26, connecting base, 27, mounting hole, 28, clamping block, 29, shock absorbing bolt. DETAILED DESCRIPTION

[0027] The utility model is further described below in combination with the drawings and embodiments.

[0028] Please refer to Figure 1 ,​Figure 2 、 Figure 3 、 Figure 4 and Figure 5 wherein, Figure 1 is a preferred embodiment of the structure of the power plant industrial steam supply flow measuring device based on heat balance provided by the utility model; Figure 2 is a structure diagram of the rear sealing plug provided by the utility model; Figure 3 is an enlarged view of A shown in Figure 2 is a structure diagram of the electromagnetic induction block provided by the utility model; Figure 4 is an enlarged view of B shown in Figure 5 is a structure diagram of the power plant industrial steam supply flow measuring device based on heat balance provided by the utility model; Figure 2 Two installation openings 17 are respectively arranged on the front face and the back face of the shell 16, and the rear sealing plug 10 is installed in the installation opening 17 on the back face; the rear face of the rear sealing plug 10 is fixedly connected with the rear sealing cover 11; the front face of the rear sealing cover 11 is rotatably connected with the rotating shaft 20; the outer surface of the rotating shaft 20 is fixedly connected with three impellers 22; the outer surface of one of the impellers 22 is installed with the magnetic block 21; the front face of the shell 16 is installed with the front sealing cover 15 through the fixing bolt 18; and the back face of the front sealing cover 15 is installed with the front sealing plug 19.

[0029] Two installation openings 17 are respectively arranged on the front face and the back face of the shell 16, and the rear sealing plug 10 is installed in the installation opening 17 on the back face; the rear face of the rear sealing plug 10 is fixedly connected with the rear sealing cover 11; the front face of the rear sealing cover 11 is rotatably connected with the rotating shaft 20; the outer surface of the rotating shaft 20 is fixedly connected with three impellers 22; the outer surface of one of the impellers 22 is installed with the magnetic block 21; the front face of the shell 16 is installed with the front sealing cover 15 through the fixing bolt 18; and the back face of the front sealing cover 15 is installed with the front sealing plug 19.

[0030] The top of the shell 16 is installed with the connecting base 26; the top of the connecting base 26 is installed with the control device 12; and the bottom of the connecting base 26 is installed with the electromagnetic induction block 24.

[0031] The rear sealing cover 11 is installed on the back face of the shell 16 through the fixing bolt 18; the back face and the front face of the shell 16 are both provided with the threaded hole which is threadedly connected with the fixing bolt 18; the rotating shaft 20 and the rear sealing cover 11 are connected with the front sealing cover 15 through the bearing; the front sealing plug 19 and the rear sealing plug 10 wrap the bearing to increase the sealing property; the two ends of the rotating shaft 20 can be in butt joint with the square opening arranged on the inner ring of the bearing to increase the connection stability; the electromagnetic induction block 24 and the magnetic block 21 are in position correspondence; the connecting base 26 and the through hole 25 are connected in the sealing treatment; and the control device 12 comprises the temperature sensor, the pressure sensor, the flow sensor, the rectifier and the totalizer.

[0032] The bottom of the control device 12 is installed with the fixed shell 23 near the two positions; and the bottom of the shell 16 is installed with the bottom plate 1 through the four shock-absorbing bolts 29.

[0033] The fixed shell 23 is internally installed with the battery; and the shock-absorbing bolt 29 plays the shock-absorbing role.

[0034] The top of the bottom plate 1 is provided with mounting holes 27 near the four corners, and four clamping blocks 28 are mounted on the top of the bottom plate 1;

[0035] The clamping blocks 28 are also near the top of the bottom plate 1 near the four corners.

[0036] A protective cover 4 with a bayonet 7 is mounted on the top of the bottom plate 1, and a leakage detection sensor 9 is mounted on the top of the protective cover 4 through a fixing seat 8;

[0037] The leakage detection sensor 9 can detect whether the shell 16 leaks, and the bayonet 7 is connected with the pipeline.

[0038] The front surface of the protective cover 4 is provided with a mounting base 6, and the front surface of the mounting base 6 is provided with an operation screen 5;

[0039] The operation screen 5 can set the parameters of the leakage detection sensor 9.

[0040] One end of the shell 16 is provided with a first connecting pipe 2 with a first flange plate 3, and the other end of the shell 16 is provided with a second connecting pipe 13 with a second flange plate 14;

[0041] The flange plate is convenient for connecting the shell 16 and the corresponding pipeline.

[0042] The working principle of the power plant industrial steam supply flow measuring device based on heat balance provided by the utility model is as follows:

[0043] A mounting hole 17 is formed on the front and back surfaces of the shell 16, and then only the two mounting holes 17 are sealed by a rear sealing cover 11 with a rear sealing plug 10 and a front sealing cover 15 with a front sealing plug 19, and a rotating shaft 20 with three impellers 22 is rotatably connected between the front sealing cover 15 and the rear sealing plug 10, the rotating shaft 20 and the impeller 22 are driven to rotate by the flow of steam, so that the magnetic block 21 and the electromagnetic induction block 24 are in contact to generate electromagnetic induction, and then the electromagnetic signal is counted and converted into a digital signal by the control equipment 12, so that the flow data can be obtained, if the impeller 22 is damaged during actual use, the rotating shaft 20 can be taken out from the mounting hole 17 by disassembling the front sealing cover 15 or the rear sealing cover 11, and then the magnetic block 21 is disassembled from the damaged impeller 22 and mounted on the new impeller 22, after replacement, the two ends of the rotating shaft 20 are mounted with the front sealing cover 15 and the rear sealing plug 10 respectively, so that they can rotate, and then the disassembled sealing cover is mounted on the shell 16 by the fixing bolt 18.

[0044] Compared with the related art, the power plant industrial steam supply flow measuring device based on heat balance has the following beneficial effects:

[0045] In order to facilitate the replacement of the impeller in the power plant industrial steam supply flow measuring device in the later period, an installation opening 17 is arranged on the front and back of the shell 16, and then only two installation openings 17 are sealed by the rear sealing cover 11 with the rear sealing plug 10 and the front sealing cover 15 with the front sealing plug 19, respectively, and a rotating shaft 20 with three impellers 22 is rotatably connected between the front sealing cover 15 and the rear sealing plug 10, the impellers 22 and the rotating shaft 20 are driven to rotate by the steam flow, so that the magnetic block 21 and the electromagnetic induction block 24 are in contact to generate electromagnetic induction, and then the electromagnetic signal is counted and converted into a digital signal by the control device 12, so that the flow data can be obtained, and the impeller 22 can be individually disassembled and replaced, the disassembly difficulty is reduced, the staff can conveniently replace the impeller in the later period, and the cost of the later maintenance of the power plant industrial steam supply flow measuring device is reduced.

[0046] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion obtained by the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A heat balance based industrial steam flow measurement device for power plants, characterized in that, Include: The shell; Two installation openings, two said installation openings are respectively arranged in the front and back of the shell, the rest of the back of the installation opening is internally mounted with a rear sealing plug, the back of the rear sealing plug is fixedly connected with a rear sealing cover, the front of the rear sealing cover is rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with three impellers, the outer surface of one of the impellers is mounted with a magnetic block, the front of the shell is mounted with a front sealing cover through a fixing bolt, the back of the front sealing cover is mounted with a front sealing plug; The through hole is arranged in the top of the shell, the top of the shell is mounted with a connecting base, the top of the connecting base is mounted with a control device, and the bottom of the connecting base is mounted with an electromagnetic induction block.

2. The heat balance based industrial steam flow measurement device for power plant of claim 1, wherein, The bottom of the control device is mounted with a fixed shell near the two positions, and the bottom of the shell is mounted with a bottom plate through four shock absorbers.

3. The heat balance based industrial steam flow measurement device for power plant of claim 2, wherein, The top of the bottom plate is provided with mounting holes near the four corners, and the top of the bottom plate is mounted with four clamping blocks.

4. The heat balance based industrial steam flow measurement device for power plant of claim 2, wherein, The top of the bottom plate is mounted with a protective cover with a bayonet, and the top of the protective cover is mounted with a leakage detection sensor through a fixing seat.

5. The heat balance based industrial steam flow measurement device for power plant of claim 4, wherein, The front of the protective cover is mounted with a mounting base, and the front of the mounting base is mounted with an operation screen.

6. The heat balance based industrial steam flow measurement device for power plant of claim 1, wherein, One end of the shell is mounted with a first connecting pipe with a first flange plate, and the other end of the shell is mounted with a second connecting pipe with a second flange plate.

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