CN218674137U - Pressure vessel leakage detection device - Google Patents
Pressure vessel leakage detection device Download PDFInfo
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- CN218674137U CN218674137U CN202222454653.XU CN202222454653U CN218674137U CN 218674137 U CN218674137 U CN 218674137U CN 202222454653 U CN202222454653 U CN 202222454653U CN 218674137 U CN218674137 U CN 218674137U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The utility model discloses a pressure vessel leak testing device, include: a pressure vessel body; the detection port is arranged on the pressure container body, and a first cavity and a second cavity are formed in the detection port; the movable block is connected in the first cavity in a resettable sliding manner, and a communication hole is formed in the movable block; the air hole is formed in the detection port, one end of the air hole is communicated with the interior of the pressure container body, and the other end of the air hole is blocked by the side face of the movable block; the detection instrument is detachably connected to the detection port, and a connecting block is fixed on the detection instrument; the pressure pipe is connected to the connecting block and connected with a pressure pump in the detection instrument, the pressure pipe is inserted at the connecting port, and the front end of the pressure pipe extends into the cavity II. The air pressure in the second cavity is detected in advance through the pressure pump in the detection instrument, and then the air pressure in the pressure container body is further detected, so that the problem that the detection result is inaccurate due to the fact that the detection instrument is not tightly connected with the detection port is solved.
Description
Technical Field
The utility model relates to a leak detection technical field, more specifically say, relate to a pressure vessel leak detection device.
Background
A thermal power plant is a plant that produces electric energy using combustible materials as fuel, and in the thermal power plant, an operation of a power generation system is supported by many apparatuses, wherein a pressure vessel is one of the most common apparatuses, the pressure vessel in the thermal power plant includes a boiler, a steam drum, an oxygen remover, and the like, and the pressure vessel has a leakage risk due to long-term use, and is generally detected by a leakage detection apparatus.
Present pressure vessel detection method is generally through letting in gas to pressure vessel inside, detects whether there is the leakage problem through detecting instrument, and current detecting instrument is relatively poor with the pressure vessel junction leakproofness, influences the testing result easily, and current detecting instrument is complicated when dismantling on pressure vessel, examines time measuring carrying out a plurality of pressure vessel, can reduce the efficiency that detects, consequently, to this current situation, the utility model discloses ingenious the pressure vessel leakage detection device that has provided for solve not enough in the above-mentioned technical background.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a pressure vessel leak testing device that structural design is reasonable, solve current detecting instrument relatively poor with the pressure vessel junction leakproofness, influence the testing result easily, and step complicated when current detecting instrument dismantles on pressure vessel, when carrying out a plurality of pressure vessel and examining time measuring, can reduce detection efficiency's problem.
The utility model provides a technical scheme that above-mentioned problem adopted is: a pressure vessel leak detection apparatus, comprising:
a pressure vessel body;
the detection port is arranged on the pressure container body, a first cavity and a second cavity are formed in the detection port, and a connecting port communicated with the second cavity is formed in the detection port;
the movable block is connected in the first cavity in a resettable sliding mode, the movable block separates the first cavity from the second cavity, and a communication hole is formed in the movable block;
the air hole is formed in the detection port, one end of the air hole is communicated with the interior of the pressure container body, the other end of the air hole is blocked by the side face of the movable block, the communicating hole in the movable block is communicated with the air hole after the movable block moves towards the first cavity, and the second cavity is communicated with the interior of the pressure container body;
the detection instrument is detachably connected to the detection port and comprises a pressure pump and a pressure instrument, and a connecting block is fixed on the detection instrument;
the pressure pipe is connected to the connecting block, connected with a pressure pump in the detection instrument, inserted at the connecting port, and the front end of the pressure pipe extends into the cavity II;
and the unidirectional moving mechanism is arranged in the detection port and used for limiting the unidirectional movement of the loose piece to the first cavity.
Further, be provided with the spacing notch of inside concave yield on the connecting block, fixed sleeve has been cup jointed to the slip on the spacing notch, and fixed sleeve's the other end extends to the outside of connecting block, the outside that detects the mouth sets up to cylindric structure, and the outside that detects the mouth is equipped with the screw thread, fixed sleeve extends to be provided with in the part in the connecting block outside and detects the corresponding screw thread in the mouth outside, and fixed sleeve's outer wall connection has the handle.
Furthermore, a sealing ring is sleeved on the outer side of the pressurizing pipe and is positioned between the detection port and the connecting block.
Furthermore, a socket is arranged on the connecting block, the socket is sleeved on the detection port, and the socket is in transition fit connection with the detection port.
Furthermore, a plurality of communicating holes are formed in the movable block, and a plurality of air holes corresponding to the communicating holes are formed in the detection opening.
Further, the unidirectional moving mechanism includes:
the fixed rod is fixed on the movable block, is positioned in the cavity II and is provided with a ratchet bar;
the pawl is hinged to the side edge of the second cavity in the detection port in a resettable manner, the pawl is meshed and clamped with the ratchet bar, and a limiting part is arranged on the pawl;
the limiting block is connected with the pressure pipe at one end, the other end of the limiting block is connected with the limiting portion and used for limiting rotation of the pawl, the pawl limits the unidirectional movement of the ratchet bar to the first cavity, the pressure pipe is separated from the limiting block at the other end of the limiting block, and the pawl does not limit the unidirectional movement of the ratchet bar at the moment.
Compared with the prior art, the utility model, have following advantage and effect:
1. the air pressure in the second cavity is detected in advance through the pressure pump in the detection instrument, and then the air pressure in the pressure container body is further detected, so that the problem that the detection result is inaccurate due to the fact that the detection instrument is not tightly connected with the detection port is solved.
2. Through fixed sleeve and detection mouth threaded connection, realized the swift installation dismantlement of detecting instrument, detect mouthful self-sealing after dismantling detecting instrument simultaneously for detecting instrument's dismouting efficiency has improved the detection efficiency when detecting a plurality of pressure vessel in proper order.
Drawings
Fig. 1 is a schematic view of the overall front sectional structure of the present invention.
Fig. 2 is a schematic view of the front view sectional structure of the inspection opening of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.
Fig. 4 is a schematic structural view of the middle loose piece of the present invention.
In the figure: the pressure container comprises a pressure container body 1, a detection port 2, a detection instrument 3, a first cavity 4, a movable block 5, a second cavity 6, a connecting port 7, a connecting block 8, a pressurizing pipe 9, a sealing ring 10, a fixing sleeve 11, a limiting notch 12, a handle 13, a sleeve joint 14, threads 15, an air hole 16, a communicating hole 17, a fixing rod 18, a ratchet rack 19, a pawl 20, a limiting part 21 and a limiting block 22.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
As shown in fig. 1 to 4: in this embodiment, a pressure vessel leakage detection device, including pressure vessel body 1, pressure vessel body 1 can be the common pressure vessel in various thermal power factory, like the boiler etc., be equipped with detection port 2 on the pressure vessel body 1, detection port 2 is used for being connected with detecting instrument 3 specially with detecting instrument 1 whether leak, can dismantle on the detection port 2 and be connected with detecting instrument 3, detecting instrument 3 is current structure, contain the force pump in it, equipment such as pressure instrument, pressurize in to pressure vessel through the force pump, later maintain a period, observe the numerical value change of pressure instrument, with whether there is the leakage in this survey pressure vessel.
Wherein, as shown in fig. 2, as a specific structure and an implementation mode of the detecting instrument 3 detachably connected to the detecting port 2, the detecting instrument 3 is fixedly connected with a connecting block 8, the connecting block 8 is fixedly connected with a pressure pipe 9, the pressure pipe 9 is connected with a pressure pump in the detecting instrument 3, the pressure is applied to the pressure container body 1 through the pressure pump and the pressure pipe 9, the detecting port 2 is provided with a connecting port 7, the pressure pipe 9 is inserted and sealed in the connecting port 7, the connecting block 8 is provided with a limit notch 12 recessed inwards, the limit notch 12 is slidably sleeved with a fixing sleeve 11, the other end of the fixing sleeve 11 extends out of the outer side of the connecting block 8, the outer side of the detecting port 2 is cylindrical, and the outer side of the detecting port 2 is provided with a thread 15, fixed sleeve 11 extends to be provided with in the part in the connecting block 8 outside with the corresponding screw thread 15 of outside screw thread 15 of detection mouth 2, and fixed sleeve 11's lateral wall rigid coupling has handle 13, when needs connect detecting instrument 3 on detection mouth 2, earlier insert with forcing pipe 9 alignment connector 7, later with fixed sleeve 11 removal cup joint on the screw thread 15 on detection mouth 2, twist fixed sleeve 11 through grabbing handle 13, and then make fixed sleeve 11 fix on detection mouth 2 through threaded connection's mode, simultaneously along with fixed sleeve 11 constantly moves on detection mouth 2, and then it is spacing to drive fixed sleeve 11's one end and the one end of spacing notch 12 meet, and then make fixed sleeve 11 exert pressure to connecting block 8, compress tightly connecting block 8 and detection mouth 2, and then accomplish detecting instrument 3 and detection mouth 2's fixed mounting.
Preferably, as shown in fig. 2, a sealing ring 10 is sleeved on the outer side of the pressurizing pipe 9, and the sealing ring 10 is located between the detection port 2 and the connection block 8 for enhancing the sealing connection between the pressurizing pipe 9 and the connection port 7.
Preferably, as shown in fig. 2, be provided with socket 14 on the connecting block 8, socket 14 cup joints on detecting port 2, and socket 14 is connected with detecting port 2 transition fit, through cup jointing socket 14 earlier on detecting port 2 to fix the location on detecting port 2 with detecting instrument 3 is preliminary, also make more convenient the connection on detecting port 2 through screw thread 15 of fixed sleeve 11 simultaneously.
As shown in fig. 2, the detection port 2 is hollow, a first cavity 4 and a second cavity 6 are arranged in the detection port, a resettable movable block 5 is slidably connected in the first cavity 4, specifically, a reset function can be realized by arranging a reset spring between the movable block 5 and the first cavity 4, the movable block 5 separates the first cavity 4 from the second cavity 6, an air hole 16 which enables the second cavity 6 to be communicated with the inside of the pressure container body 1 is further arranged in the detection port 2, in an initial state, the side face of the movable block 5 blocks and seals the air hole 16, a communication hole 17 is arranged on the movable block 5, one end of the communication hole 17 is communicated with the second cavity 6, and the other end of the communication hole 17 is communicated with the air hole 16 after the movable block 5 moves towards the first cavity 4; the connecting port 7 is communicated with the cavity II 6, namely the pressure pipe 9 is inserted into the connecting port 7 and then extends into the cavity II 6, the detection port 2 is also internally provided with a one-way moving mechanism for limiting the movement of the movable block 5 towards the cavity I4, after the detection instrument 3 is arranged on the detection port 2, the pressure is applied through a pressure pump in the detection instrument 3, gas is introduced into the cavity II 6 through the pressure pipe 9, in an initial state, the gas hole 16 is blocked by the movable block 5, one side of the cavity II 6 is sealed by the movable block 5, the other side is sealed by the connecting block 8, the cavity II 6 is a sealed cavity, the pressure in the cavity II 6 is maintained to a certain value by observing the pressure instrument while controlling the pressure pump, at the moment, the movable block 5 moves a certain distance towards the cavity I4, but the movable block 5 still blocks the gas hole 16, the change of the numerical value of the pressure instrument is observed for a period of time, when the numerical value of the pressure instrument keeps stable, the connection between the detection instrument 3 and the detection port 2 is tight enough, the detection result of the pressure container cannot be influenced, meanwhile, the situation that the leakage phenomenon does not exist at the detection port 2 can be proved, then, the pressure pump is started to continuously pressurize, the movable block 5 is further driven to continuously move towards the first cavity 4 until the air hole 16 is communicated with the communication hole 17, the communication hole 17 and the air hole 16 on the movable block 5 are always kept communicated due to the one-way moving mechanism, further, the pressure container body 1 is pressurized by airflow in the pressure pump, the pressure in the pressure container body 1 is kept at a certain numerical value for a period of time according to the same principle, and whether the leakage phenomenon occurs in the pressure container body 1 is judged by the fact that whether the numerical value on the pressure instrument changes.
Preferably, as shown in fig. 4, the movable block 5 is provided with a plurality of communication holes 17, the detection port 2 is provided with a plurality of air holes 16 corresponding to the communication holes 17, and the plurality of air holes 16 and the communication holes 17 are provided, so that the flow cross-sectional area of the air holes 16 and the communication holes 17 is increased, the flow rate of the gas in the pressure pipe 9 flowing into the pressure container body 1 is increased, and the detection efficiency is increased.
As shown in fig. 2-3, as a specific structure and an embodiment of the unidirectional moving mechanism, the unidirectional moving mechanism includes a fixed rod 18 fixedly connected to the movable block 5, the fixed rod 18 is located in the cavity two 6, a ratchet bar 19 is disposed on the fixed rod 18, a resettable pawl 20 is hinged on a side wall of the cavity two 6 in the detection port 2, the pawl 20 is engaged with the ratchet bar 19, a resettable limit block 22 is further slidably inserted in the detection port 2, specifically, a reset spring is disposed between the limit block 22 and the detection port 2 to realize a resetting function, a limit portion 21 is disposed on the pawl 20, one end of the limit block 22 is connected to the limit portion 21, the other end of the limit block 22 is connected to the pressure pipe 9, and in an initial state, the limit block 22 is not in contact with the limit portion 21 on the pawl 20, when the pressure pipe 9 is inserted into the cavity II 6, the pressure pipe touches the limiting block 22, and then the limiting block 22 is pushed to move, and then the other end of the limiting block 22 is driven to be connected with the limiting part 21 on the pawl 20, so that the pawl 20 is limited to move towards the cavity I4, and further the pawl 20 is limited to move towards the limiting part 21 on the fixed rod 18 and the loose piece 5 in one direction, after the detection of the detecting instrument 3 is completed, the detecting instrument 3 is disassembled, the pressure pipe 9 is moved out of the cavity II 6, and further the limiting block 22 is reset under the action of the reset spring to be separated from the limiting part 21 on the pawl 20, so that the pawl 20 is not limited to rotate, and further the pawl 20 loses the function of the limiting ratchet rack 19, and further the loose piece 5 is automatically sealed and blocked with the air hole 16 under the action of the reset spring, and the disassembling process of the detecting instrument 3 is simplified.
The working principle is as follows:
firstly, the pressure pipe 9 is inserted into the connecting port 7 in an aligned mode, then the fixed sleeve 11 is movably sleeved on the thread 15 on the detection port 2 in a sleeved mode, the fixed sleeve 11 is twisted by grabbing the handle 13, the fixed sleeve 11 is further fixed on the detection port 2 in a threaded connection mode, and simultaneously, the fixed sleeve 11 continuously moves on the detection port 2 along with the fixed sleeve 11, so that one end of the fixed sleeve 11 is driven to be connected with one end of the limiting notch 12 for limiting, the fixed sleeve 11 is further enabled to apply pressure on the connecting block 8, the connecting block 8 is tightly pressed with the detection port 2, and therefore the rapid fixed installation of the detection instrument 3 and the detection port 2 is completed; when the pressurizing pipe 9 is inserted into the cavity II 6, the pressurizing pipe touches the limiting block 22, so that the limiting block 22 is pushed to move, the other end of the limiting block 22 is driven to be connected with the limiting part 21 on the pawl 20, the rotation of the pawl 20 is limited, and the pawl 20 is enabled to limit the fixed rod 18 and the movable block 5 to move towards the cavity I4 in one direction; starting a pressure pump in the detection instrument 3, observing the pressure instrument to maintain the air pressure in the cavity II 6 to a certain value, moving the movable block 5 to the cavity I4 for a certain distance, but the movable block 5 still blocks the air hole 16, observing the change of the value of the pressure instrument for a period of time, when the value of the pressure instrument is stable, representing that the connection between the detection instrument 3 and the detection port 2 is tight enough, the detection result of the pressure container cannot be influenced, and simultaneously proving that no leakage phenomenon exists at the detection port 2, starting the pressure pump to pressurize continuously, further driving the movable block 5 to move continuously to the cavity I4 until the air hole 16 is communicated with the communicating hole 17, because the communicating hole 17 on the movable block 5 is communicated with the air hole 16 by the one-way moving mechanism, further leading the air flow in the pressure pump to pressurize the pressure container body 1, the pressure in the pressure container body 1 is kept at a certain value for a period of time by the same principle, whether the pressure container body 1 leaks or not is judged by judging whether the value on the pressure instrument changes or not, the tightness between the detection instrument 3 and the detection port 2 is detected twice respectively, and the pressure container body 1 is detected, so that the detection result is more accurate, after the pressure container is detected, the fixing sleeve 11 is detached from the detection port 2 through the handle 13, so that the pressurizing pipe 9 is moved out of the cavity II 6, the limiting block 22 is reset under the action of the reset spring to be separated from the limiting part 21 on the pawl 20, the pawl 20 is prevented from being limited and rotated, the pawl 20 loses the function of the limiting ratchet rack 19, and the movable block 5 automatically seals the air hole 16 under the action of the reset spring, thereby simplifying the disassembly process of the detecting instrument 3.
Those not described in detail in this specification are well within the skill of the art.
In addition, it should be noted that the above contents described in the present specification are only illustrations of the structure of the present invention. All the equivalent changes made by the structure, the characteristics and the principle according to the patent idea of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions by those skilled in the art may be made to the described embodiments without departing from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A pressure vessel leak detection apparatus, comprising:
a pressure vessel body (1);
the detection port (2) is arranged on the pressure container body (1), a first cavity (4) and a second cavity (6) are formed in the detection port (2), and a connecting port (7) communicated with the second cavity (6) is formed in the detection port (2);
the movable block (5) is connected in the first cavity (4) in a resettable sliding mode, the first cavity (4) is separated from the second cavity (6) by the movable block (5), and a communicating hole (17) is formed in the movable block (5);
the air hole (16) is formed in the detection port (2), one end of the air hole (16) is communicated with the inside of the pressure container body (1), and the other end of the air hole (16) is blocked by the side face of the movable block (5); when the movable block (5) moves towards the first cavity (4), the communicating hole (17) is communicated with the air hole (16), and the second cavity (6) is communicated with the inside of the pressure container body (1);
the detection instrument (3) is detachably connected to the detection port (2), the detection instrument (3) comprises a pressure pump and a pressure instrument, and a connecting block (8) is fixed on the detection instrument (3);
the pressurizing pipe (9) is connected to the connecting block (8), the pressurizing pipe (9) is connected with a pressure pump in the detection instrument (3), the pressurizing pipe (9) is inserted into the connecting port (7), and the front end of the pressurizing pipe (9) extends into the cavity II (6);
and the unidirectional moving mechanism is arranged in the detection port (2) and is used for limiting the unidirectional movement of the movable block (5) towards the cavity I (4).
2. The pressure vessel leakage detection device according to claim 1, wherein a limiting notch (12) is arranged on the connecting block (8), a fixing sleeve (11) is slidably sleeved on the limiting notch (12), the other end of the fixing sleeve (11) extends to the outer side of the connecting block (8), the outer side of the detection port (2) is provided with a cylindrical structure, threads (15) are arranged on the outer side of the detection port (2), threads (15) corresponding to the threads (15) on the outer side of the detection port (2) are arranged on the inner side of the portion, extending out of the connecting block (8), of the fixing sleeve (11), and a handle (13) is connected to the outer wall of the fixing sleeve (11).
3. The pressure vessel leakage detection device according to claim 2, wherein a sealing ring (10) is sleeved on the outer side of the pressurization pipe (9), and the sealing ring (10) is located between the detection port (2) and the connection block (8).
4. The pressure vessel leakage detection device according to claim 2, wherein a socket (14) is provided on the connection block (8), the socket (14) is sleeved on the detection port (2), and the socket (14) is in transition fit connection with the detection port (2).
5. The pressure vessel leakage detection device according to claim 1, wherein a plurality of communication holes (17) are formed in the loose piece (5), and a plurality of air holes (16) corresponding to the communication holes (17) are formed in the detection opening (2).
6. The pressure vessel leak detection apparatus according to any one of claims 1 to 5, wherein the one-way movement mechanism includes:
the fixed rod (18) is fixed on the movable block (5), the fixed rod (18) is positioned in the cavity II (6), and a ratchet bar (19) is arranged on the fixed rod (18);
the pawl (20) is hinged to the side edge of the second cavity (6) in the detection port (2) in a resettable manner, the pawl (20) is meshed and clamped with the ratchet bar (19), and a limiting part (21) is arranged on the pawl (20);
the limiting block (22) is connected with the pressure pipe (9) at one end, the other end of the limiting block (22) is connected with the limiting portion (21) and used for limiting rotation of the pawl (20), the pawl (20) enables the ratchet rack (19) to move towards the first cavity (4) in a one-way mode, and when the pressure pipe (9) is separated from the limiting block (22), the other end of the limiting block (22) is separated from the limiting portion (21), and at the moment, the pawl (20) does not limit the ratchet rack (19) to move in the one-way mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222454653.XU CN218674137U (en) | 2022-09-16 | 2022-09-16 | Pressure vessel leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222454653.XU CN218674137U (en) | 2022-09-16 | 2022-09-16 | Pressure vessel leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218674137U true CN218674137U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222454653.XU Active CN218674137U (en) | 2022-09-16 | 2022-09-16 | Pressure vessel leakage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218674137U (en) |
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2022
- 2022-09-16 CN CN202222454653.XU patent/CN218674137U/en active Active
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