A boiler main feed water flow meter with built-in nozzle

Abstract

The present invention relates to the technical field of boiler feed water pipelines, and in particular to a boiler main feed water flowmeter with a built-in nozzle, comprising a preheating guide device, a processing device and a water supply device, wherein the holes opened inside the leakage disk realize the upward and downward connected flow of the antiscalant liquid, and the rubber ring is used to seal and prevent the antiscalant liquid from leaking, and the high-temperature steam enters the steam cylinder to increase the internal pressure of the steam cylinder, and the bulging steam squeezes the second disc upward, and the antiscalant liquid flows into the hemispherical shell along the medicine delivery pipe and flows out through the internal holes of the hemispherical shell, and the antiscalant liquid is mixed with the boiler main feed water inside the cylinder body to prevent the boiler main feed water from scaling inside the pressure pipeline. Through the above-mentioned arrangement, the present invention arranges a steam conveying structure in the water supply pressure pipeline of the boiler main feed water flowmeter, and at the same time, the addition of the antiscaling liquid can be started and controlled by the steam conveying structure, thereby improving the linkage control of steam thermal deoxygenation and water body antiscaling of the boiler main feed water.

Description

Technical Field

[0001] The invention relates to the technical field of boiler feed water pipelines, in particular to a boiler main feed water flow meter with a built-in nozzle. Background Art

[0002] The boiler equipment pressurizes and transports the main feed water through a pressure pipe, and uses a long-diameter nozzle flowmeter to monitor the water flow in the main feed water pipe. The long-diameter nozzle flowmeter and the pressure pipe connecting structure are part of the main feed water treatment of the boiler equipment. Taking the main feed water flowmeter and its delivery pressure pipe of small and medium-sized boilers as an example, it is necessary to have pre-treatment requirements for heating, deoxygenating and flow monitoring of the boiler main feed water.

[0003] The main feed water flow meter pipelines and delivery pressure pipelines of some small and medium-sized boilers use a step-by-step treatment method to deoxygenate the boiler main feed water, which makes the linkage control effect of steam thermal deoxygenation and water body scale prevention of the boiler main feed water poor. In the above process, the thermal deoxygenation method of spraying the boiler main feed water through a nozzle and directly mixing it with high-temperature steam for offset is insufficient for the steam thermal deoxygenation of the boiler main feed water. Therefore, a boiler main feed water flow meter with a built-in nozzle is proposed to address the above problems. Summary of the invention

[0004] The object of the present invention is to provide a boiler main feed water flowmeter with a built-in nozzle to solve the problem that the main feed water flowmeter pipelines and delivery pressure pipelines of some small and medium-sized boilers proposed in the above background technology adopt a step-by-step treatment method to deoxygenate the boiler main feed water, resulting in poor linkage control effect of steam thermal deoxygenation and water body scale prevention of the boiler main feed water. In the above process, the thermal deoxygenation method of spraying the boiler main feed water through a nozzle and directly mixing it with high-temperature steam for offset is insufficient for the steam thermal deoxygenation of the boiler main feed water.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A boiler main feed water flow meter with a built-in nozzle comprises a preheating guide device, a treatment device and a water supply device, wherein the treatment device is arranged inside the preheating guide device, and the water supply device is arranged at the bottom of the treatment device, and the preheating guide device comprises a ring body, a barrel, a first spiral tube, a spiral groove, a barrel, a folded tube, a disc, a sewage discharge device, a filter screen, a diversion tube, a second spiral tube and a converging tube, wherein the top of the ring body is fixedly connected with the barrel, and the barrel is fixedly provided with the first spiral tube, the first spiral tube is located inside the ring body, and the spiral groove is arranged inside the ring body, and the first spiral tube is inside the spiral groove arranged in the ring body, and the bottom of the ring body is fixedly provided with a barrel, and the bottom end of the barrel is fixedly connected with the folded tube, and the bottom of the folded tube is fixedly connected with the barrel. The end is fixedly connected with a disk, the bottom of the disk is provided with a sewage discharge device, the inside of the disk is fixedly provided with a filter screen, the bottom pipeline of the first spiral tube is fixedly connected with the top pipe opening of the shunt pipe, the bottom pipe opening of the shunt pipe is fixedly connected with the second spiral tube, the rear end pipe opening of the top of the second spiral tube is fixedly connected with the front end pipe opening of the converging pipe, the processing device includes a cartridge, a fan plate, a ring, a screw cap, an outer cylinder, an inner cylinder, an adjusting cylinder, a sleeve, a spring, a first disc, a guide rod, a leak disc, a rubber ring, a drug delivery tube, a hemispherical shell, a ring cylinder, a liquid guide tube, a curved pipe, an inclined pipe, a trifurcated pipe, a steam cylinder, a drainage pipe, a steam delivery tube, a second disc, a processing cylinder, a cavity box, a scattering nozzle, a spiral filler plate and a safety valve pipeline device, and a fixed device is provided between the outer side of the cartridge and the inner wall of the ring body. A fan plate is arranged, a ring is fixedly connected to the top of the cartridge, the inner wall of the ring is spirally arranged with the outer side of the screw cap, the bottom end of the cartridge is fixedly connected to an outer cylinder, the inner side of the outer cylinder is fixedly arranged, the outer side of the outer cylinder is fixedly arranged with an adjusting cylinder, the inner side of the bottom of the inner cylinder is fixedly arranged with a sleeve, a spring is fixedly arranged on the inner wall of the top of the sleeve, a first disc is fixedly arranged at the bottom end of the spring, a guide rod is fixedly arranged at the bottom end of the first disc, a leakage disc is fixedly arranged on the outside of the guide rod, a rubber ring is fixedly arranged on the outside of the leakage disc, the left and right ends of the adjusting cylinder are fixedly connected to a drug delivery tube, the end of the drug delivery tube away from the rubber ring is fixedly connected to a hemispherical shell with fine holes, a ring cylinder is arranged at the bottom of the adjusting cylinder, and the left and right ends of the ring cylinder are fixed A liquid guide tube is fixedly connected, a bent pipe is fixedly connected to the bottom end of the annular cylinder, an end of the bent pipe away from the annular cylinder is fixedly connected to an inclined pipe with a spiral groove on the outside, and an end of the inclined pipe away from the bent pipe is fixedly connected to a three-pronged pipe, a steam cylinder is arranged at the bottom of the annular cylinder, the left and right ends of the steam cylinder are fixedly connected to guide pipes, the bottom end of the steam cylinder is fixedly connected to a steam delivery pipe, a second disc is fixedly arranged at the bottom end of the guide rod, and the second disc is slidably arranged with the internal annular wall of the steam cylinder, treatment cylinders are arranged on the left and right sides of the steam cylinder, a cavity box is fixedly arranged on the top of the treatment cylinder, and a scattering nozzle is fixedly connected to the bottom end of the cavity box, a spiral filler plate is fixedly arranged between the outside of the guide pipe and the inside of the treatment cylinder, and a safety valve pipeline device is fixedly connected to the front end of the treatment cylinder.

[0007] Preferably, the water supply device includes a base plate, a liquid storage cylinder, a hole box, a water pump device, an electric butterfly valve, a down pipe, an up pipe and a long-diameter nozzle flowmeter housing, the top of the base plate is fixedly provided with a liquid storage cylinder and a hole box with a channel on the top, the top of the front end support plate of the base plate is fixedly provided with a water pump device and a down pipe, the down pipe is fixedly connected to the drainage pipe of the water pump device, the inside of the water pump device water suction pipe is fixedly connected with an electric butterfly valve, the water pump device water suction pipe is fixedly arranged inside the front end of the liquid storage cylinder, the front end of the hole box is fixedly connected to the end of the water pump device water suction pipe, the top of the down pipe is provided with an up pipe, the inner sides of the down pipe and the up pipe are threadedly assembled and limited with the long-diameter nozzle flowmeter housing by means of flange assembly, the top of the liquid storage cylinder is fixedly connected to the bottom end of the treatment cylinder, and the top of the liquid storage cylinder is fixedly provided with an electronic liquid level meter.

[0008] Preferably, the sewage discharge device includes a sewage discharge barrel, a screw member and a silicone column. The bottom of the disk body is fixedly arranged on the sewage discharge barrel, the inner wall of the bottom of the sewage discharge barrel is threadably rotatably arranged on the screw member, and a silicone column is fixedly arranged on the top of the screw member, and the silicone column is in contact with the inner wall of the top of the sewage discharge barrel.

[0009] Preferably, the top of the cylinder is connected to the bottom of the spiral groove, the liquid guide tube is fixedly connected to the inner wall of the disk located at the top of the filter, and the drug delivery tube is fixedly connected to the inner wall of the cylinder.

[0010] Preferably, the outer side of the inclined tube is fixedly arranged with the second spiral tube, the bottom of the three-pronged tube is fixedly connected with the top of the cavity box, the inside of the cavity box is fixedly arranged with the outer side of the drainage tube, and the drainage tube is provided with fine holes.

[0011] Preferably, the inner wall of the silicone ring fixedly arranged inside the top of the steam cylinder, the inner wall of the silicone ring fixedly arranged at the bottom of the adjusting cylinder and the inner wall of the silicone ring fixedly arranged at the bottom of the sleeve are all slidably arranged with the guide rod, the rubber ring is slidably arranged with the inner wall of the adjusting cylinder, and the first disc is slidably arranged with the inner wall of the sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In the present invention, the mixed and prepared boiler feed water scale inhibitor liquid is poured into the medicine cylinder, and the scale inhibitor liquid enters the regulating cylinder through the outer cylinder and the inner cylinder, and the scale inhibitor liquid is connected and flows up and down through the channel opened in the leakage plate, and the scale inhibitor liquid is sealed and leak-proofed through the rubber ring. High-temperature steam enters the steam cylinder, so that the internal pressure of the steam cylinder increases, and the bulging steam presses the second disc upward to drive the guide rod, the leakage plate, the rubber ring and the first disc to move upward, the spring is compressed, and the regulating cylinder is connected to the medicine delivery pipe, and the scale inhibitor is prevented from leaking. The scale inhibitor liquid flows into the hemispherical shell along the drug delivery pipe and flows out through the internal pores of the hemispherical shell. The scale inhibitor liquid is mixed with the boiler main feed water inside the cylinder body to enhance the fluidity of the boiler main feed water containing high calcium, high magnesium, high sulfate and high silicon, and prevent the boiler main feed water from scaling inside the pressure pipe. Through the above arrangement, a steam delivery structure is arranged in the water supply pressure pipeline of the boiler main feed water flowmeter, and the addition of the scale inhibitor liquid can be started and controlled by the steam delivery structure, thereby improving the linkage control of steam thermal deoxygenation and water body scale prevention for the boiler main feed water;

[0014] 2. In the present invention, the main feed water of the boiler then flows into the interior of the annular cylinder along the liquid guide pipe. The elbow, the inclined pipe and the three-way pipe are combined delivery pipelines. The main feed water of the boiler flowing through the inclined pipe is heated for the second time by the second spiral pipe. The three-way pipe and the cavity box are connected structures. The heated main feed water of the boiler is sprayed out through the scattering nozzle. The spiral packing plate is a hard orifice plate packing structure. The water sprayed from the scattering nozzle penetrates downward through the orifice plate packing structure. The steam cylinder is connected with the guide pipe, and the high-temperature steam is discharged through the fine holes of the guide pipe. The main feed water of the boiler is thermally heated by the high-temperature steam, and the main feed water of the boiler is precipitated by steam heating. The oxygen contained in the water, the treatment cylinder, the liquid storage cylinder, and the orifice box are of a connected structure. Since the electric butterfly valve is in a closed state, the steam input from the drainage pipe increases the internal air pressure of the treatment cylinder, the liquid storage cylinder, and the orifice box. The safety valve pipeline device automatically opens when the internal air pressure of the treatment cylinder, the liquid storage cylinder, and the orifice box reaches the calibration value, which is used to discharge mixed gases such as high-temperature oxygen, air, and steam. Through the above arrangement, when the water sprayed from the scattering nozzle penetrates the spiral packing plate, the dispersedly sprayed boiler main feed water meets the high-temperature steam sprayed upward from the fine holes of the drainage pipe, which can improve the steam thermal deoxygenation effect of the boiler main feed water;

[0015] 3. In the present invention, the mixture of the boiler main feed water and the scale inhibitor liquid enters the interior of the disc through the folded tube, the filter screen can block and remove the particulate impurities in the boiler main feed water, and the first delivery pump, the second delivery pump, and the third delivery pump are turned off. At this time, the water pressure of the water flowing into the interior of the disc is insufficient and cannot enter the interior of the liquid guide tube, so that part of the boiler main feed water remains in the disc. The screw member is manually rotated to make the screw member and the silica gel column move downward as a whole until the silica gel column is out of contact with the sewage barrel, so that the particulate impurity precipitation inside the bottom of the disc and between the filter screens can be discharged. Through the above arrangement, it is convenient to quickly remove the intercepted particle precipitation of the boiler main feed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper half of the preheating guide device of the present invention;

[0018] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at A;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the lower half of the preheating guide device of the present invention;

[0020] Figure 5 It is a schematic diagram of the component structure of the sewage discharge device of the present invention;

[0021] Figure 6 This is a schematic diagram of the distribution position structure of the first spiral tube of the present invention;

[0022] Figure 7 It is a schematic diagram of the installation positions of the flow divider, the second spiral tube and the converging tube of the present invention;

[0023] Figure 8 It is a structural schematic diagram of the processing device of the present invention;

[0024] Fig. 9 It is a schematic diagram of the cross-sectional structure of the upper half of the components of the processing device of the present invention;

[0025] Fig.10 For the present invention Fig. 9 An enlarged structural schematic diagram of some components in FIG.

[0026] Fig.11 This is a schematic diagram of the connection structure between the drug delivery tube and the hemispherical shell of the present invention;

[0027] Fig.12 It is a schematic diagram of the cross-sectional structure of the middle part of the processing device of the present invention;

[0028] Fig.13It is a schematic diagram of the cross-sectional structure of the lower half of the components of the processing device of the present invention;

[0029] Fig.14 It is a schematic diagram of the cross-sectional structure of the steam cylinder of the present invention;

[0030] Fig.15 This is a schematic diagram of the cross-sectional structure of the treatment tube of the present invention;

[0031] Fig.16 It is a schematic diagram of the cross-sectional structure of the cavity box and the top connecting pipeline of the present invention;

[0032] Fig.17 For the present invention Fig.16 Schematic diagram of the structure at B;

[0033] Fig.18 This is a schematic diagram of the drainage pipe structure of the present invention;

[0034] Fig.19 It is a schematic diagram of the structure of the water supply device of the present invention;

[0035] Fig. 20 For the present invention Fig.19 A schematic diagram of the cross-sectional structure of some components;

[0036] Fig.21 It is a schematic diagram of the cross-sectional structure of the hole box of the present invention.

[0037] In the figure: 1. preheating guide device; 101. ring body; 102. tube; 103. first spiral tube; 104. spiral groove; 105. tube; 106. folded tube; 107. disk; 108. sewage device; 1081. sewage cylinder; 1082. screw member; 1083. silica gel column; 109. filter screen; 110. diverter tube; 111. second spiral tube; 112. converging tube; 2. treatment device; 201. cartridge; 202. fan plate; 203. ring; 204. screw cap; 205. outer cylinder; 206. inner cylinder; 207. adjusting cylinder; 208. sleeve; 209. spring; 210. first disc; 211. Guide rod; 212, leakage plate; 213, rubber ring; 214, medicine delivery tube; 215, hemispherical shell; 216, ring tube; 217, liquid guide tube; 218, elbow; 219, inclined tube; 220, trifurcated tube; 221, steam cylinder; 222, drainage pipe; 223, steam delivery pipe; 224, second disc; 225, treatment cylinder; 226, cavity box; 227, scattering nozzle; 228, spiral packing plate; 229, safety valve pipeline device; 3, water supply device; 31, base plate; 32, liquid storage cylinder; 33, hole box; 34, water pump device; 35, electric butterfly valve; 36, lower through pipe; 37, upper through pipe; 38, long-diameter nozzle flowmeter shell. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the embodiments of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Similarly, similar words such as "one", "an", or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Similar words such as "include" or "comprises" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0040] In addition, in the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] See also Figure 1-21 , the present invention provides a technical solution:

[0042] A boiler main feed water flow meter with a built-in nozzle comprises a preheating guide device 1, a processing device 2 and a water supply device 3. The processing device 2 is arranged inside the preheating guide device 1, and the water supply device 3 is arranged at the bottom of the processing device 2. The preheating guide device 1 comprises a ring body 101, a bobbin 102, a first spiral tube 103, a spiral groove 104, a cylinder 105, a folded tube 106, a disc 107, a sewage discharge device 108, a filter screen 109, a diversion pipe 110, a second spiral tube 111 and a converging pipe 112. The top of the ring body 101 is fixedly connected with the bobbin 102, and the first spiral tube 103 is fixedly arranged in the bobbin 102. The first spiral tube 103 is located inside the ring body 101, and the spiral groove 104 is arranged inside the ring body 101. The first spiral tube 103 is located inside the ring body 101. The spiral tube 103 is inside the spiral groove 104 set in the ring body 101, and a cylinder 105 is fixedly set at the bottom of the ring body 101. The bottom end of the cylinder 105 is fixedly connected with a folded tube 106, and the bottom end of the folded tube 106 is fixedly connected with a disk 107. A sewage discharge device 108 is set at the bottom of the disk 107, and a filter screen 109 is fixedly set inside the disk 107. The bottom pipeline of the first spiral tube 103 is fixedly connected with the top pipe opening of the shunt pipe 110, and the bottom pipe opening of the shunt pipe 110 is fixedly connected with the second spiral tube 111. The rear end pipe opening of the top of the second spiral tube 111 is fixedly connected with the front end pipe opening of the converging pipe 112. The processing device 2 includes a cartridge 201, a fan plate 202, a ring 203, a screw cap 204, an outer cylinder 205, an inner cylinder 206, an adjusting cylinder 207, and a sleeve The medicine cartridge 201 is provided with a fan plate 202 fixedly disposed between the outer side of the medicine cartridge 201 and the inner wall of the ring body 101. The top of the medicine cartridge 201 is fixedly connected with a ring ring 203. The inner wall of the ring ring 203 is spirally rotated with the outer side of the screw cap 204. The bottom of the medicine cartridge 201 is fixedly connected with an outer cylinder 205. The outer cylinder 206 is provided with a fan plate 202 fixedly disposed between the outer side of the medicine cartridge 201 and the inner wall of the ring body 101. The top of the medicine cartridge 201 is fixedly connected with a ring ring 203. The inner wall of the ring ring 203 is spirally rotated with the outer side of the screw cap 204. The bottom of the medicine cartridge 201 is fixedly connected with an outer cylinder 205. The outer cylinder 206 is provided with a fan plate 202 fixedly disposed between the outer side of the medicine cartridge 201 and the inner wall of the ring body 101. An inner cylinder 206 is fixedly arranged on the inner side of the outer cylinder 205, an adjusting cylinder 207 is fixedly arranged on the outer side of the outer cylinder 205, a sleeve 208 is fixedly arranged on the inner side of the bottom of the inner cylinder 206, a spring 209 is fixedly arranged on the inner wall of the top of the sleeve 208, a first disc 210 is fixedly arranged on the bottom end of the spring 209, a guide rod 211 is fixedly arranged on the bottom end of the first disc 210, a leakage disc 212 is fixedly arranged on the outer side of the guide rod 211, a rubber ring 213 is fixedly arranged on the outer side of the leakage disc 212, both left and right ends of the adjusting cylinder 207 are fixedly connected with a drug delivery tube 214, and one end of the drug delivery tube 214 away from the rubber ring 213 is fixedly connected with a hemispherical shell 215 with fine holes, a ring cylinder 216 is arranged on the bottom of the adjusting cylinder 207, and both left and right ends of the ring cylinder 216 are fixedly connected with a liquid guide tube 217,The bottom end of the annular tube 216 is fixedly connected with an elbow 218, and the end of the elbow 218 away from the annular tube 216 is fixedly connected with an inclined tube 219 with a spiral groove on the outside, and the end of the inclined tube 219 away from the elbow 218 is fixedly connected with a three-pronged tube 220. A steam cylinder 221 is arranged at the bottom of the annular tube 216, and the left and right ends of the steam cylinder 221 are fixedly connected with a guide pipe 222, and the bottom end of the steam cylinder 221 is fixedly connected with a steam delivery pipe 223. A second disc 224 is fixedly arranged at the bottom end of the guide rod 211, and the second disc 224 is slidably arranged with the inner ring wall of the steam cylinder 221. Treatment cylinders 225 are arranged on the left and right sides of the steam cylinder 221, and a cavity box 226 is fixedly arranged on the top of the treatment cylinder 225. The bottom end of the cavity box 226 is fixedly connected with a scattering nozzle 227, and a spiral filler plate 228 is fixedly arranged between the outside of the guide pipe 222 and the inside of the treatment cylinder 225. The front end of the treatment cylinder 225 is fixedly connected with a safety valve pipeline device 229.

[0043] The water supply device 3 includes a base plate 31, a liquid storage cylinder 32, a hole box 33, a water pump device 34, an electric butterfly valve 35, a lower pipe 36, an upper pipe 37 and a long-diameter nozzle flowmeter housing 38. The liquid storage cylinder 32 and the hole box 33 with a hole on the top are fixedly arranged on the top of the base plate 31. The water pump device 34 and the lower pipe 36 are fixedly arranged on the top of the front support plate of the base plate 31. The lower pipe 36 is fixedly connected to the drainage pipe of the water pump device 34. The electric butterfly valve 35 is fixedly connected to the inside of the water pump device 34. The water pump device 34 suction pipe is fixedly arranged inside the front end of the liquid storage cylinder 32. The front end of the hole box 33 is connected to the water pump. The end of the water suction pipe of the device 34 is fixedly connected, and an upper through pipe 37 is arranged on the top of the lower through pipe 36. The inner sides of the lower through pipe 36 and the upper through pipe 37 are threadedly assembled and limited with the long-diameter nozzle flowmeter housing 38 by means of flange assembly. The top of the liquid storage cylinder 32 is fixedly connected with the bottom end of the treatment cylinder 225, and an electronic liquid level gauge is fixedly arranged inside the top of the liquid storage cylinder 32. Through the above arrangement, the water pump device 34 of the water supply device 3 is a water pumping starting device, and the electric butterfly valve 35 controls the opening or closing state of the connection with the liquid storage cylinder 32 and the main boiler feed water inside the orifice box 33, so as to facilitate the pumping supply of the main boiler feed water.

[0044] The sewage discharge device 108 includes a sewage discharge barrel 1081, a screw member 1082 and a silicone column 1083. The bottom of the disk body 107 is fixedly arranged on the sewage discharge barrel 1081, the inner wall of the bottom of the sewage discharge barrel 1081 is threadedly rotated with the screw member 1082, and a silicone column 1083 is fixedly arranged on the top of the screw member 1082. The silicone column 1083 is in contact with the inner wall of the top of the sewage discharge barrel 1081. Through the above arrangement, it is convenient to discharge the granular impurities precipitated inside the bottom of the disk body 107 and between the filter screen 109.

[0045] like Figure 4 , Figure 6As shown, the cylinder 105 and the ring body 101 are fixedly arranged, and the spiral groove 104 penetrates the bottom of the ring body 101, so that the top of the cylinder 105 is connected to the bottom of the spiral groove 104, the liquid guide tube 217 is fixedly connected to the inner wall of the disk 107 located on the top of the filter 109, and the drug delivery tube 214 is fixedly arranged on the inner wall of the cylinder 105. Through the above arrangement, a fluid cavity for the main feed water of the boiler is formed, and at the same time, the filter 109 has an interception and barrier effect on particulate impurities inside the main feed water of the boiler.

[0046] The outer side of the inclined tube 219 is fixedly arranged with the second spiral tube 111, the bottom of the three-pronged tube 220 is fixedly connected with the top of the cavity box 226, the inside of the cavity box 226 is fixedly arranged with the outer side of the drain pipe 222, and the drain pipe 222 is provided with fine holes. Through the above arrangement, the inclined tube 219, the three-pronged tube 220 and the cavity box 226 form a circulation cavity structure for the main feed water of the boiler, and the fine holes provided in the drain pipe 222 play a role in blowing high-temperature steam.

[0047] The inner wall of the silicone ring fixedly arranged inside the top of the steam cylinder 221, the inner wall of the silicone ring fixedly arranged at the bottom of the adjusting cylinder 207, and the inner wall of the silicone ring fixedly arranged at the bottom of the sleeve 208 are all slidably arranged with the guide rod 211, the rubber ring 213 is slidably arranged with the inner wall of the adjusting cylinder 207, and the first disc 210 is slidably arranged with the inner wall of the sleeve 208. Through the above arrangement, the guide rod 211 is vertically slidingly limited, and the sliding sealing is ensured by the set silicone ring.

[0048] Working process: The present invention provides a flow detection pressure pipeline device for feeding water to small and medium-sized boilers, wherein the top of the tube 102 is connected to the external main water supply through a first delivery pump, the boiler economizer is connected to a delivery pipeline and a return pipeline, the delivery pipeline of the boiler economizer is fixedly connected to the top pipe opening of the first spiral tube 103, the first spiral tube 103 and the delivery pipeline of the boiler economizer are connected through a second delivery pump, the front end of the confluence pipe 112 is connected to the second spiral tube 111, so that the rear end of the confluence pipe 112 is fixedly connected to the return pipeline of the boiler economizer , wherein the first spiral tube 103, the branch tube 110, the second spiral tube 111 and the confluence tube 112 are interconnected pipelines, forming a circulation structure for heating through the boiler economizer, the bottom of the steam delivery pipe 223 is connected to the external steam pipeline through a third delivery pump, the safety valve pipeline device 229 includes a safety valve fixedly connected to the front end of the treatment cylinder 225 and an external pipeline combination, the external pipeline of the safety valve pipeline device 229 is connected to the subsequent condenser device, and is used to treat the mixed gas such as high-temperature oxygen, air and steam escaping after the main feed water is heated.

[0049] The above-mentioned first delivery pump, second delivery pump, third delivery pump, electronic liquid level gauge fixedly arranged inside the top end of the liquid storage cylinder 32, water pump device 34 and electric butterfly valve 35 are all controlled and processed by an external PLC controller, and the first delivery pump, second delivery pump, third delivery pump, electronic liquid level gauge fixedly arranged inside the top end of the liquid storage cylinder 32, water pump device 34 and electric butterfly valve 35 are all electrically connected to the external power supply equipment.

[0050] Manually rotate the screw cap 204 to pour the mixed boiler feed water antiscalant liquid into the cartridge 201. The antiscalant liquid enters the regulating cartridge 207 through the outer cartridge 205 and the inner cartridge 206. The antiscalant liquid is connected and flows upward and downward through the hole in the leak plate 212. Fig.10 The position of the rubber ring 213 shown realizes the sealing and leakage prevention of the scale inhibitor liquid. The first disc 210 and the second disc 224 provided in the device are both hard silicone discs.

[0051] The PLC controller controls the electric butterfly valve 35 to be closed, the water pump device 34 to be inactive, and the first delivery pump, the second delivery pump, and the third delivery pump to be started simultaneously:

[0052] (1) When the first delivery pump and the second delivery pump are started: the main boiler feed water is input into the spiral groove 104 through the barrel 102, and the main boiler feed water flows in a spiral downward direction inside the spiral groove 104. The internal fluid of the economizer pipeline connected to the first spiral tube 103 is used to preheat the main boiler feed water. Since the spiral groove 104 penetrates the bottom of the ring body 101, the top of the barrel 105 is connected to the bottom of the spiral groove 104, and the heated main boiler feed water is introduced into the barrel 105.

[0053] (2) When the third delivery pump is started: the cross-sectional area of ​​the steam delivery pipe 223 provided in the device is larger than twice the cross-sectional area of ​​the guide pipe 222. The high-temperature steam enters the steam cylinder 221, thereby increasing the internal pressure of the steam cylinder 221. The expanding steam presses the second disc 224 upward, thereby driving the guide rod 211, the leakage disc 212, the rubber ring 213 and the first disc 210 to move upward. The spring 209 is compressed, and the regulating cylinder 207 and the drug delivery pipe 214 are in a connected state. The scale inhibitor liquid flows into the hemispherical shell 215 along the drug delivery pipe 214 and flows out through the internal channel of the hemispherical shell 215. The scale inhibitor liquid is mixed with the boiler main feed water inside the cylinder 105, thereby enhancing the fluidity of the boiler main feed water containing high calcium, high magnesium, high sulfate and high silicon, thereby preventing the boiler main feed water from scaling inside the pressure pipe.

[0054] The mixed liquid of the boiler main feed water and the scale inhibitor liquid enters the inside of the disc body 107 through the folded pipe 106, and the filter screen 109 can block and remove the particulate impurities in the boiler main feed water. Then the boiler main feed water enters the inside of the annular cylinder 216 along the liquid guide pipe 217. The elbow 218, the inclined pipe 219 and the three-way pipe 220 are a combined conveying pipeline. The boiler main feed water flowing through the inclined pipe 219 is secondary heated by the second spiral pipe 111. The three-way pipe 220 and the cavity box 226 are a connected structure. The heated boiler main feed water is sprayed out through the scattering nozzle 227. The spiral filler plate 228 is a hard orifice filler structure. The water sprayed from the scattering nozzle 227 penetrates downward through the orifice filler structure. The steam cylinder 221 and the guide pipe 217 are connected to each other. The drain pipe 222 is connected, and the high-temperature steam is discharged through the fine holes of the drain pipe 222. The main feed water of the boiler is thermally heated by the high-temperature steam, and the oxygen contained in the main feed water of the boiler is precipitated by steam heating. The treatment cylinder 225, the liquid storage cylinder 32, and the hole box 33 are connected structures. Since the electric butterfly valve 35 is in a closed state, the steam input from the drain pipe 222 increases the internal air pressure of the treatment cylinder 225, the liquid storage cylinder 32, and the hole box 33. The safety valve pipeline device 229 automatically opens when the internal air pressure of the treatment cylinder 225, the liquid storage cylinder 32, and the hole box 33 reaches the calibration value, so as to discharge the mixed gas such as high-temperature oxygen, air and steam into the condenser device for cooling and discharge treatment.

[0055] The main boiler feed water softened by the release of oxygen flows into the liquid storage cylinder 32 and the hole box 33 for storage. At the same time, an electronic liquid level gauge is fixedly installed inside the top of the liquid storage cylinder 32. When the liquid level inside the liquid storage cylinder 32 reaches the calibrated limit value, the first delivery pump, the second delivery pump and the third delivery pump are closed.

[0056] At this time, the water pressure flowing into the disc body 107 is insufficient and cannot enter the liquid guide tube 217, so that part of the boiler main feed water remains in the disc body 107. The screw member 1082 is manually rotated to make the screw member 1082 and the silicone column 1083 move downward as a whole until the silicone column 1083 is out of contact with the sewage barrel 1081, so that the particulate impurities inside the bottom of the disc body 107 and between the filter screen 109 can be discharged.

[0057] The electric butterfly valve 35 is started to form a passage state, and the water pump device 34 is started to suck the deoxygenated and softened boiler main feed water through the through hole on the top of the orifice box 33. The top of the upper through pipe 37 is fixedly connected to the boiler main feed water group pipe. The above-mentioned deoxygenated and softened boiler main feed water flows toward the boiler main feed water group pipe through the electric butterfly valve 35, the water pump device 34, the lower through pipe 36, the long-diameter nozzle flowmeter housing 38 and the upper through pipe 37, wherein the outside of the long-diameter nozzle flowmeter housing 38 is connected to the pressure differential transmitter wiring, which is used to monitor the water feed flow inside the long-diameter nozzle flowmeter housing 38.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler main feed water flow meter with a built-in nozzle, comprising a preheating guide device (1), a processing device (2) and a water supply device (3), characterized in that: A treatment device (2) is arranged inside the preheating and diverting device (1); a water supply device (3) is arranged at the bottom of the treatment device (2); the preheating and diverting device (1) comprises a ring body (101), a tube (102), a first spiral tube (103), a spiral groove (104), a tube (105), a folded tube (106), a disc (107), a sewage discharge device (108), a filter screen (109), a flow distribution pipe (110), a second spiral tube (111) and a converging pipe (112); the top end of the ring body (101) is fixedly connected to the tube (102); the tube (102) is fixedly provided with the first spiral tube (103); the first spiral tube (103) is located inside the ring body (101); The ring body (101) is provided with a spiral groove (104) inside. The first spiral tube (103) is inside the spiral groove (104) provided in the ring body (101). A cylinder (105) is fixedly provided at the bottom of the ring body (101). The bottom end of the cylinder (105) is fixedly connected to a folded tube (106). The bottom end of the folded tube (106) is fixedly connected to a disk (107). A sewage discharge device (108) is provided at the bottom of the disk (107). A filter screen (109) is fixedly provided inside the disk (107). The bottom pipeline of the first spiral tube (103) is fixedly connected to the top pipe opening of the diverter pipe (110). The bottom pipe opening of the diverter pipe (110) is fixedly connected to the second spiral tube (111). The rear end pipe opening of the top of the second spiral tube (111) is fixedly connected to the front end pipe opening of the confluence pipe (112). The processing device (2) comprises a medicine cartridge (201), a fan plate (202), a ring (203), a screw cap (204), an outer cylinder (205), an inner cylinder (206), an adjustment cylinder (207), a sleeve (208), a spring (209), a first disc (210), a guide rod (211), a leaking disc (212), a rubber ring (213), a medicine delivery tube (214), a hemispherical shell (215), a ring cylinder (216), a liquid guide tube (217), a curved tube (218), an inclined tube (219), a trifurcated tube (220), a steam cartridge (221), a guide pipe (222), a steam delivery tube (223), a second disc ( 224), a treatment cylinder (225), a cavity box (226), a scattering nozzle (227), a spiral filler plate (228), and a safety valve pipeline device (229), wherein a fan plate (202) is fixedly arranged between the outer side of the cartridge (201) and the inner wall of the ring body (101), a ring (203) is fixedly connected to the top of the cartridge (201), the inner wall of the ring (203) and the outer side of the screw cap (204) are spirally arranged, the bottom end of the cartridge (201) is fixedly connected to the outer cylinder (205), the inner side of the outer cylinder (205) is fixedly arranged with an inner cylinder (206), the outer side of the outer cylinder (205) is fixedly arranged with an adjustment cylinder (207), and the inner side of the bottom of the inner cylinder (206) is fixedly arranged with a sleeve (208),A spring (209) is fixedly provided on the inner wall of the top of the sleeve (208); a first disc (210) is fixedly provided on the bottom end of the spring (209); a guide rod (211) is fixedly provided on the bottom end of the first disc (210); a leakage disc (212) is fixedly provided on the outer side of the guide rod (211); a rubber ring (213) is fixedly provided on the outer side of the leakage disc (212); and a drug delivery tube (214) is fixedly provided at both left and right ends of the regulating tube (207). The end of the drug delivery tube (214) away from the rubber ring (213) is fixedly connected to a hemispherical shell (215) with fine holes, the bottom of the adjustment tube (207) is provided with a ring tube (216), the left and right ends of the ring tube (216) are fixedly connected to liquid guide tubes (217), the bottom end of the ring tube (216) is fixedly connected to a curved tube (218), and the end of the curved tube (218) away from the ring tube (216) is fixedly connected to an inclined tube (219) with a spiral groove on the outer side. The end of the inclined tube (219) away from the curved tube (218) is fixedly connected to a three-pronged tube (220); a steam cylinder (221) is arranged at the bottom of the annular tube (216); the left and right ends of the steam cylinder (221) are fixedly connected to exhaust pipes (222); the bottom end of the steam cylinder (221) is fixedly connected to a steam delivery pipe (223); a second disc (224) is fixedly arranged at the bottom end of the guide rod (211); the second disc (224) is slidably arranged with the inner ring wall of the steam cylinder (221); treatment cylinders (225) are arranged on the left and right sides of the steam cylinder (221); a cavity box (226) is fixedly arranged at the top of the treatment cylinder (225); a scattering nozzle (227) is fixedly connected at the bottom end of the cavity box (226); a spiral filler plate (228) is fixedly arranged between the outer side of the exhaust pipe (222) and the inner side of the treatment cylinder (225); and a safety valve pipeline device (229) is fixedly connected to the front end of the treatment cylinder (225). , 2. A boiler main feed water flow meter with a built-in nozzle according to claim 1, characterized in that: The water supply device (3) comprises a base plate (31), a liquid storage cylinder (32), a hole box (33), a water pump device (34), an electric butterfly valve (35), a lower through pipe (36), an upper through pipe (37) and a long-diameter nozzle flowmeter housing (38); the top of the base plate (31) is fixedly provided with a liquid storage cylinder (32) and a hole box (33) with a hole opening at the top; the top of the front support plate of the base plate (31) is fixedly provided with a water pump device (34) and a lower through pipe (36); the lower through pipe (36) is fixedly connected to a drainage pipe of the water pump device (34); the inside of the water pump device (34) is fixedly connected to a water pump pipe. An electric butterfly valve (35) is connected, the water pump device (34) water suction pipe is fixedly arranged inside the front end of the liquid storage cylinder (32), the front end of the hole box (33) is fixedly connected to the end of the water pump device (34) water suction pipe, the top of the lower through pipe (36) is provided with an upper through pipe (37), the inner sides of the lower through pipe (36) and the upper through pipe (37) are threadedly assembled and limited with the long-diameter nozzle flow meter housing (38) by means of flange assembly, the top of the liquid storage cylinder (32) is fixedly connected to the bottom end of the treatment cylinder (225), and an electronic liquid level meter is fixedly arranged inside the top end of the liquid storage cylinder (32).

3. A boiler main feed water flow meter with a built-in nozzle according to claim 1, characterized in that: The sewage discharge device (108) comprises a sewage discharge barrel (1081), a screw member (1082) and a silicone column (1083); the bottom of the disk body (107) is fixedly arranged on the sewage discharge barrel (1081); the inner wall of the bottom of the sewage discharge barrel (1081) is threadably arranged on the screw member (1082); a silicone column (1083) is fixedly arranged on the top of the screw member (1082); and the silicone column (1083) is in close contact with the inner wall of the top of the sewage discharge barrel (1081).

4. A boiler main feed water flow meter with a built-in nozzle according to claim 1, characterized in that: The top of the cylinder (105) is connected to the bottom of the spiral groove (104), the liquid guide tube (217) is fixedly connected to the inner wall of the disk (107) located on the top of the filter screen (109), and the drug delivery tube (214) is fixedly connected to the inner wall of the cylinder (105).

5. The boiler main feed water flow meter with built-in nozzle according to claim 1, characterized in that: The outer side of the inclined tube (219) is fixedly arranged with the second spiral tube (111), the bottom of the three-pronged tube (220) is fixedly connected with the top of the cavity box (226), the inside of the cavity box (226) is fixedly arranged with the outer side of the drainage tube (222), and the drainage tube (222) is provided with fine holes inside.

6. The boiler main feed water flow meter with built-in nozzle according to claim 1, characterized in that: The inner wall of the silicone ring fixedly arranged inside the top of the steam cylinder (221), the inner wall of the silicone ring fixedly arranged at the bottom of the regulating cylinder (207), and the inner wall of the silicone ring fixedly arranged at the bottom of the sleeve (208) are all slidably arranged with the guide rod (211), the rubber ring (213) is slidably arranged with the inner wall of the regulating cylinder (207), and the first disc (210) is slidably arranged with the inner wall of the sleeve (208).

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