Boiler pressure testing device

Abstract

The utility model relates to the technical field of boiler pressure testing, in particular to a boiler pressure testing device which comprises a boiler body, an air pump, an electromagnetic valve, an air conveying hose, a connecting pipe, a fixing assembly, an extension pipe, a fixing cylinder, an exhaust mechanism and an air pressure meter. The front end of the gas conveying hose is fixedly connected with the output end of the gas pump, one end of the connecting pipe is fixedly connected to the front end of the boiler body, the rear end of the gas conveying hose is arranged at the front end of the connecting pipe, one end of the extension pipe is fixedly connected with a fixing cylinder, and an exhaust mechanism is arranged on one side of the top of the fixing cylinder. And the other side of the top of the fixed cylinder is fixedly connected with a barometer. The fixing assembly is used for fixedly connecting the gas conveying hose and the connecting pipe in a threaded screwing mode, and the sealing performance of the connecting position of the gas conveying hose and the connecting pipe is improved through the first rubber ring and the rubber air bag ring in the fixing assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler pressure inspection, in particular to a boiler pressure inspection device. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in fuel. The boiler outputs steam, high-temperature water or organic heat carriers with a certain amount of heat energy. To ensure the safety of boiler use, boiler pressure inspection is usually carried out. The following problems exist in the prior art:

[0003] When the existing boiler is subjected to pressure inspection, it is necessary to pressurize and supply gas inside the boiler. Since the connection at the connection pipe opening of the boiler is not stable during pressurized gas supply, leakage occurs at the connection, which in turn affects the accuracy of detecting the airtightness in the boiler. Secondly, after the boiler inspection, it is not convenient to release the pressure in the delivery pipe, which affects the disassembly and removal of the inspection device from the boiler. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a boiler pressure inspection device, which has the characteristics of facilitating the stability and tightness of the connection with the connection pipe opening of the boiler during pressurized gas supply, facilitating pressure release, and facilitating the disassembly and removal of the inspection device from the boiler.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A boiler pressure inspection device for detecting a boiler body includes an air pump, a solenoid valve, an air delivery hose, a connection pipe, a fixing component, an extension pipe, a fixing cylinder, an exhaust mechanism and a pressure gauge. The connection end of the solenoid valve is fixedly connected to the input end of the air pump. The front end of the air delivery hose is fixedly connected to the output end of the air pump. One end of the connection pipe is fixedly connected to the front end of the boiler body. The rear end of the air delivery hose is arranged at the front end of the connection pipe. The inside of the fixing component is arranged outside the connection of the air delivery hose and the connection pipe. An extension pipe is fixedly connected to the outer wall of the air delivery hose near the air pump. One end of the extension pipe is fixedly connected to a fixing cylinder. An exhaust mechanism is arranged on one side of the top of the fixing cylinder. A pressure gauge is fixedly connected to the other side of the top of the fixing cylinder.

[0007] Further, the fixing component includes an internally threaded pipe and a fixing pipe. A positioning ring is fixedly connected to the middle of the outer wall of the internally threaded pipe. A concave sleeve ring is fixedly connected to the front side of the outer wall of the fixing pipe. The rear end of the internally threaded pipe is inserted into the concave sleeve ring. A second threaded groove is formed in the rear side of the outer wall of the fixing pipe. A first threaded groove is formed in the front side of the outer wall of the connecting pipe. The outer wall of the fixing pipe is threadedly connected to the front side of the inner wall of the internally threaded pipe through the second threaded groove. The outer wall of the connecting pipe is threadedly connected to the rear side of the inner wall of the internally threaded pipe through the first threaded groove.

[0008] Further, the outer diameters of the fixing pipe, the connecting pipe, and the gas transmission hose are the same. The front end of the fixing pipe is fixedly connected to the rear end of the gas transmission hose.

[0009] Further, a plurality of anti-slip protrusions are arranged in an annular array on the outer wall of the concave sleeve ring. A rubber airbag ring is fixedly connected to the front side of the outer wall of the internally threaded pipe away from the positioning ring. The outer wall of the rubber airbag ring abuts against the inner wall of the concave sleeve ring. A first rubber ring is arranged at the rear end of the fixing pipe. The first rubber ring is in contact with the end face of the connecting pipe.

[0010] Further, the exhaust mechanism includes an exhaust pipe and a connecting member. Threads are provided at the bottom of the inner wall of the exhaust pipe. A fixing ring is fixedly connected to the top of the outer wall of the exhaust pipe. A sealing ring groove is formed at the top of the fixing ring.

[0011] Further, the bottom of the outer wall of the exhaust pipe is fixedly connected to the top of the fixing cylinder. The inside of the gas transmission hose is communicated with the inside of the extension pipe. The inside of the fixing cylinder is communicated with the inside of the exhaust pipe.

[0012] Further, the connecting member includes an insertion pipe. A knob is fixedly connected to the top of the insertion pipe. A third threaded groove is formed in the bottom of the outer wall of the insertion pipe. A plurality of exhaust ports are arranged in an annular array on the upper side of the outer wall of the insertion pipe near the third threaded groove. A second rubber ring is fixedly connected to the outer side of the lower surface of the knob near the insertion pipe.

[0013] Further, the outer wall of the insertion pipe is threadedly connected to the inner wall of the exhaust pipe through the third threaded groove. The outer wall of the second rubber ring abuts against the inner wall of the sealing ring groove.

[0014] The technical solution provided by the present utility model may include the following beneficial effects:

[0015] 1. The present utility model provides a boiler pressure inspection device, which adopts the cooperation among an air delivery hose, a connecting pipe and a fixing component. By using the fixing component and adopting a threaded screwing method, the air delivery hose and the connecting pipe are connected and fixed. During the connection process, the sealing performance at the joint of the air delivery hose and the connecting pipe is increased by using the rubber ring I and the rubber air bag ring in the fixing component, solving the problem that when the existing boiler is subjected to pressure inspection, it is necessary to pressurize and deliver air into the boiler interior. Since the connection at the connection port of the boiler during pressurized air delivery is not stable, leakage occurs at the joint, thereby affecting the accuracy of detecting the airtightness of the boiler, and achieving the beneficial effect of facilitating the stability and tightness of the connection at the connection port of the boiler during pressurized air delivery.

[0016] 2. The present utility model provides a boiler pressure inspection device, which adopts the cooperation among an extension pipe, a fixing cylinder and an exhaust mechanism. By installing the exhaust mechanism on the fixing cylinder, during inspection, the exhaust mechanism and the fixing cylinder are in a sealed setting. After the inspection is completed, by operating the exhaust mechanism, the pressure in the boiler body and the air delivery hose is discharged through the fixing cylinder, solving the problem that it is not convenient to release the pressure in the delivery pipe after the boiler inspection, thereby affecting the disassembly and removal of the inspection device from the boiler, and achieving the beneficial effect of facilitating pressure release and convenient disassembly and removal of the inspection device from the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a boiler pressure inspection device according to an embodiment of the present utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of a fixing component according to an embodiment of the present utility model;

[0019] Figure 3 is a partial enlarged three-dimensional structural schematic diagram of A according to an embodiment of the present utility model;

[0020] Figure 4 is a three-dimensional structural schematic diagram of an exhaust mechanism according to an embodiment of the present utility model;

[0021] Figure 5 is a three-dimensional structural schematic diagram of a connecting member according to an embodiment of the present utility model.

[0022] Among them, 1. Boiler body; 2. Air pump; 3. Solenoid valve; 4. Gas transmission hose; 5. Connecting pipe; 501. First thread groove; 6. Fixing component; 61. Internal thread pipe; 610. Rubber airbag ring; 62. Fixing pipe; 620. Second thread groove; 621. First rubber ring; 63. Positioning ring; 64. Concave sleeve ring; 641. Anti-slip protrusion; 7. Extension pipe; 8. Fixing cylinder; 9. Exhaust mechanism; 91. Exhaust pipe; 910. Thread; 92. Connecting piece; 921. Inserting pipe; 9210. Exhaust port; 922. Knob; 923. Third thread groove; 924. Second rubber ring; 93. Fixing ring; 930. Sealing ring groove; 10. Pressure gauge. Specific embodiments

[0023] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or importance.

[0025] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The following combination Figures 1 to 5, a boiler pressure inspection device according to an embodiment of the present utility model is described, which is used to detect a boiler body 1 and includes an air pump 2, a solenoid valve 3, an air delivery hose 4, a connecting pipe 5, a fixing assembly 6, an extension pipe 7, a fixing cylinder 8, an exhaust mechanism 9 and a pressure gauge 10. The connecting end of the solenoid valve 3 is fixedly connected to the input end of the air pump 2. The front end of the air delivery hose 4 is fixedly connected to the output end of the air pump 2. One end of the connecting pipe 5 is fixedly connected to the front end of the boiler body 1. The rear end of the air delivery hose 4 is arranged at the front end of the connecting pipe 5. The inside of the fixing assembly 6 is arranged outside the joint of the air delivery hose 4 and the connecting pipe 5. One side of the outer wall of the air delivery hose 4 close to the air pump 2 is fixedly connected with an extension pipe 7. One end of the extension pipe 7 is fixedly connected with a fixing cylinder 8. An exhaust mechanism 9 is arranged on one side of the top of the fixing cylinder 8. A pressure gauge 10 is fixedly connected to the other side of the top of the fixing cylinder 8;

[0028] It should be noted that the air pump 2, the solenoid valve 3, the air delivery hose 4, the connecting pipe 5, the fixing assembly 6, the extension pipe 7, the fixing cylinder 8, the exhaust mechanism 9 and the pressure gauge 10 are provided. The connecting pipe 5 and the air delivery hose 4 are connected and fixed through the fixing assembly 6. The air pump 2 compresses the air in the boiler body 1, and then the air pressure value in the boiler body 1 is inspected through the fixing cylinder 8. After the inspection is completed, the exhaust mechanism 9 is operated to release the compressed gas in the boiler body 1.

[0029] Specifically: as Figures 2-3 shown, the present utility model provides a technical solution for a boiler pressure inspection device: the fixing assembly 6 includes an internal thread pipe 61 and a fixing pipe 62. A positioning ring 63 is fixedly connected to the middle side of the outer wall of the internal thread pipe 61. A concave sleeve ring 64 is fixedly connected to the front side of the outer wall of the thread groove two 620. A thread groove two 620 is provided on the rear side of the outer wall of the fixing pipe 62. A thread groove one 501 is provided on the front side of the outer wall of the connecting pipe 5. The outer diameters of the fixing pipe 62, the connecting pipe 5 and the air delivery hose 4 are the same. The front end of the fixing pipe 62 is fixedly connected to the rear end of the air delivery hose 4. The outer wall of the fixing pipe 62 is threadedly connected to the front side of the inner wall of the internal thread pipe 61 through the thread groove two 620. The outer wall of the connecting pipe 5 is threadedly connected to the rear side of the inner wall of the internal thread pipe 61 through the thread groove one 501. By screwing the fixing pipe 62 and the connecting pipe 5 into the inside of the internal thread pipe 61 respectively for connection and fixation, the stability of the connection between the air delivery hose 4 and the connecting pipe 5 is completed. A plurality of anti-slip protrusions 641 are arranged in an annular array on the outer wall of the concave sleeve ring 64. A rubber airbag ring 610 is fixedly connected to the front side of the outer wall of the internal thread pipe 61 away from the positioning ring 63. The outer wall of the rubber airbag ring 610 abuts against the inner wall of the concave sleeve ring 64. A rubber ring one 621 is arranged at the rear end of the fixing pipe 62. Through the elastic extrusion of the rubber airbag ring 610 against the inner wall of the concave sleeve ring 64, the phenomenon of air leakage is prevented. At the same time, the fixing pipe 62 is attached to the front end of the connecting pipe 5 through the rubber ring one 621, increasing the sealing performance at the joint of the air delivery hose 4 and the connecting pipe 5.

[0030] As Figure 4 shown, the utility model provides a technical solution for a boiler pressure inspection device: The exhaust mechanism 9 includes an exhaust pipe 91 and a connecting piece 92. A thread 910 is provided at the bottom of the inner wall of the exhaust pipe 91. A fixing ring 93 is fixedly connected to the top of the outer wall of the exhaust pipe 91. A sealing ring groove 930 is provided at the top of the fixing ring 93. The bottom of the outer wall of the exhaust pipe 91 is fixedly connected to the top of the fixing cylinder 8. The inside of the gas transmission hose 4 is communicated with the inside of the extension pipe 7. The inside of the fixing cylinder 8 is communicated with the inside of the exhaust pipe 91. By installing the exhaust pipe 91 on the fixing cylinder 8, the compressed gas can be released conveniently under the cooperation of the exhaust pipe 91 and the connecting piece 92.

[0031] As Figure 5 shown, the utility model provides a technical solution for a boiler pressure inspection device: The connecting piece 92 includes an insertion tube 921. A knob 922 is fixedly connected to the top of the insertion tube 921. A thread groove three 923 is provided at the bottom of the outer wall of the insertion tube 921. A plurality of exhaust ports 9210 are annularly arranged on the outer wall of the insertion tube 921 near the upper side of the thread groove three 923. By providing a plurality of exhaust ports 9210 on the insertion tube 921, the compressed gas in the boiler body 1 and the gas transmission hose 4 can be released conveniently. A rubber ring two 924 is fixedly connected to the outer side of the lower surface of the knob 922 near the insertion tube 921. The outer wall of the insertion tube 921 is connected to the thread 910 on the inner wall of the exhaust pipe 91 through the thread groove three 923. The outer wall of the rubber ring two 924 is lapped with the inner wall of the sealing ring groove 930. When the connecting piece 92 is connected to the exhaust pipe 91, the rubber ring two 924 is extruded and fitted into the sealing ring groove 930, increasing the tightness of the connection between the exhaust pipe 91 and the connecting piece 92.

[0032] Next, the working principle of the boiler pressure inspection device will be specifically described.

[0033] As Figures 1-5As shown, when conducting a pressure test on the boiler, first, one side inside the internal thread pipe 61 is screwed onto the outer wall of the connecting pipe 5. Then, the end of the gas transmission hose 4 far from the air pump 2 is screwed into the other side of the internal thread pipe 61 through the second thread groove 620. During the connection process, the fixed pipe 62 abuts against the front end of the connecting pipe 5 through the first rubber ring 621, completing the docking between the fixed pipe 62 and the connecting pipe 5. The rubber airbag ring 610 on the internal thread pipe 61 is elastically pressed and fitted onto the inner wall of the concave sleeve ring 64, thus completing the sealed connection between the gas transmission hose 4 and the connecting pipe 5, improving the stability and tightness of the connection at the joint. Then, the inspection device is connected to the power supply, and the air pump 2 is started. The output end of the air pump 2 transmits gas into the boiler body 1 through the gas transmission hose 4, continuously compressing the air inside the boiler body 1 to generate air pressure. At the same time, by observing the air pressure value on the pressure gauge 10, when the pressure inside the boiler body 1 reaches the designed index, the air pump 2 is stopped by closing the solenoid valve 3. Then, observe again whether the air pressure value on the pressure gauge 10 changes. If there is a change, it indicates that the boiler body 1 is damaged. If the air pressure value remains unchanged, it also indicates that the sealing performance inside the boiler body 1 is good. After the inspection is completed, the insertion pipe 921 is screwed out upward along the inside of the exhaust pipe 91 through the knob 922, exposing the exhaust port 9210 on the insertion pipe 921. Thus, the compressed gas in the boiler body 1 and the gas transmission hose 4 is discharged from the exhaust pipe 91 through the fixed cylinder 8, facilitating the disassembly and removal of the inspection device from the boiler.

[0034] The specific types and structures of the solenoid valve 3 and the air pump 2 are existing products, and the specific circuit connection structures and control relationships of the solenoid valve 3 and the air pump 2 are prior art, so no more details will be described here.

[0035] Other components and operations of a boiler pressure inspection device according to an embodiment of the present invention are known to those of ordinary skill in the art, and will not be described in detail here.

[0036] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A boiler pressure inspection device for detecting the boiler body, characterized in that: It includes an air pump, a solenoid valve, an air delivery hose, a connecting pipe, a fixing component, an extension pipe, a fixing cylinder, an exhaust mechanism and a pressure gauge. The connecting end of the solenoid valve is fixedly connected to the input end of the air pump. The front end of the air delivery hose is fixedly connected to the output end of the air pump. One end of the connecting pipe is fixedly connected to the front end of the boiler body. The rear end of the air delivery hose is arranged at the front end of the connecting pipe. The inside of the fixing component is arranged outside the joint of the air delivery hose and the connecting pipe. One side of the outer wall of the air delivery hose close to the air pump is fixedly connected with an extension pipe. One end of the extension pipe is fixedly connected with a fixing cylinder. One side of the top of the fixing cylinder is provided with an exhaust mechanism. The other side of the top of the fixing cylinder is fixedly connected with a pressure gauge.

2. The boiler pressure inspection device according to claim 1, characterized in that: The fixing component includes an internally threaded pipe and a fixing pipe. The middle part of the outer wall of the internally threaded pipe is fixedly connected with a positioning ring. The front side of the outer wall of the fixing pipe is fixedly connected with a concave sleeve ring. The rear end of the internally threaded pipe is inserted into the concave sleeve ring. A second threaded groove is formed in the rear side of the outer wall of the fixing pipe. A first threaded groove is formed in the front side of the outer wall of the connecting pipe. The outer wall of the fixing pipe is threadedly connected to the front side of the inner wall of the internally threaded pipe through the second threaded groove. The outer wall of the connecting pipe is threadedly connected to the rear side of the inner wall of the internally threaded pipe through the first threaded groove.

3. A boiler pressure inspection device according to claim 2, characterized in that: The outer diameters of the fixing pipe, the connecting pipe and the air delivery hose are the same. The front end of the fixing pipe is fixedly connected to the rear end of the air delivery hose.

4. A boiler pressure inspection device according to claim 2, characterized in that: A plurality of anti-slip protrusions are arranged in a circular array on the outer wall of the concave sleeve ring. A rubber airbag ring is fixedly connected to the front side of the outer wall of the internally threaded pipe far from the positioning ring. The outer wall of the rubber airbag ring is lapped with the inner wall of the concave sleeve ring. A first rubber ring is arranged at the rear end of the fixing pipe. The first rubber ring is in fit with the end face of the connecting pipe.

5. A boiler pressure inspection device according to claim 1, characterized in that: The exhaust mechanism includes an exhaust pipe and a connecting piece. Threads are arranged at the bottom of the inner wall of the exhaust pipe. The top of the outer wall of the exhaust pipe is fixedly connected with a fixing ring. A sealing ring groove is formed in the top of the fixing ring.

6. The boiler pressure inspection device according to claim 5, wherein: The bottom of the outer wall of the exhaust pipe is fixedly connected to the top of the fixing cylinder. The inside of the air delivery hose is communicated with the inside of the extension pipe. The inside of the fixing cylinder is communicated with the inside of the exhaust pipe.

7. A boiler pressure inspection device according to claim 5, characterized in that: The connecting piece includes an insertion pipe. A knob is fixedly connected to the top of the insertion pipe. A third threaded groove is formed in the bottom of the outer wall of the insertion pipe. A plurality of exhaust ports are arranged in a circular array on the upper side of the outer wall of the insertion pipe close to the third threaded groove. A second rubber ring is fixedly connected to the outside of the lower surface of the knob close to the insertion pipe.

8. A boiler pressure inspection device according to claim 7, characterized in that: The outer wall of the insertion pipe is threadedly connected to the inner wall of the exhaust pipe through the third threaded groove. The outer wall of the second rubber ring is lapped with the inner wall of the sealing ring groove.

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