CN211150111U

CN211150111U - Pressure gauge connecting device

Info

Publication number: CN211150111U
Application number: CN201921296323.4U
Authority: CN
Inventors: 罗永乐; 陶冉
Original assignee: China Nuclear Industry Maintenance Co Ltd
Current assignee: China Nuclear Industry Maintenance Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-07-31
Anticipated expiration: 2029-08-09

Abstract

The utility model provides a pressure gauge connecting device is connected through the supporting of manometer interface on damping pipe and governing valve upper reaches or low reaches pipeline to the transition joint sealing connection who will be connected with the electron pressure gauge through the locking sleeve is on the damping pipe. In the process of adjusting the pressure in the pressure vessel of the nuclear power equipment, the electronic pressure gauge can be quickly and conveniently connected and installed on the pressure gauge interface on the upstream or downstream pipeline of the adjusting valve, the original mechanical pressure gauge on the pressure gauge interface is replaced by the electronic pressure gauge, so that the pressure value in the adjusting process is electronically displayed in a digital form, the pressure value is conveniently and quickly and accurately read, the pressure adjusting duration is shortened, and the accuracy of pressure adjustment is improved. In addition, the damping tube can play a damping role in damping pressure fluctuation in the pipeline, the influence of pipeline pressure fluctuation variation factors on the electronic pressure gauge can be reduced, the pressure adjusting time is shortened, and the accuracy of pressure adjustment is further improved.

Description

Pressure gauge connecting device

Technical Field

The utility model belongs to the technical field of nuclear power station pipeline pressure detects and pressure vessel pressure adjustment auxiliary assembly, and more specifically says, relates to a pressure gauge connecting device.

Background

During the production and operation of the nuclear power plant, when pressure fluctuation (generally, pressure exceeding a preset pressure) occurs in a pressure vessel of the nuclear power plant, the pressure in the pressure vessel of the nuclear power plant needs to be gradually adjusted through a regulating valve on a pipeline communicated with the pressure vessel according to an operation program, so that the pressure in the pressure vessel of the nuclear power plant is recovered to be normal. However, in the process of regulating the pressure in the pressure vessel of the nuclear power plant, it is necessary to constantly observe and record the readings of the mechanical pressure gauges upstream and downstream of the regulating valve. However, the mechanical pressure gauges arranged on the upstream and downstream pipelines of the nuclear power equipment regulating valve are easily affected by pipeline pressure fluctuation variation factors, and a pointer of the mechanical pressure gauge usually deviates in a small range, so that a worker can read a pressure value only within a long time, and the read pressure value often has a large error, so that the time for the pressure regulation process to last is too long, the accuracy of the pressure regulation is low, the normal operation of a nuclear power equipment pressure container is affected, and potential safety hazards can be caused to the nuclear power production operation in severe cases.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure gauge connecting device, lead to the manometer pointer beat when aiming at solving the nuclear power station pressure vessel internal pressure fluctuation that exists among the prior art, lead to being difficult to the accuracy and read the pressure value.

In order to realize the above object, the utility model discloses a technical scheme provide a pressure gauge connecting device, including be used for with be located the governing valve upper reaches or the pipeline on low reaches on the manometer interface link to each other and play damping effect's damping tube, be used for the transition joint of conversion connection pressure gauge and incite somebody to action the sealed locking of transition joint in locking sleeve on the damping tube, damping tube axial both ends are formed with respectively and are used for arranging in intake end in the pipeline with be used for stretching out the outside water outlet end of manometer interface, intake end is equipped with water inlet port, water outlet end is equipped with water outlet port, just be equipped with on the outer wall of damping tube be used for with the first external screw thread of internal thread screw-thread fit of manometer interface.

Furthermore, the damping pipe comprises a necking pipe section extending into the pipeline, a thread pipe section with the first external thread arranged on the outer wall, and a connecting pipe section connecting the necking pipe section and the thread pipe section, the water inlet end is formed at one end, far away from the connecting pipe section, of the necking pipe section, and the water outlet end is formed at one end, far away from the connecting pipe section, of the thread pipe section.

Furthermore, the outer diameter of the necking pipe section is gradually reduced from the water outlet end to the water inlet end.

Furthermore, a step hole is formed in the locking sleeve, a first internal thread in threaded fit with the first external thread is arranged on the inner wall of a large hole of the step hole, and a small hole of the step hole is in sealed connection with the transition joint.

Further, the transition joint comprises a first tubular joint used for being connected with the connecting end of the pressure gauge in a sealing mode, a second tubular joint with the outer wall provided with second external threads and a tubular transition section for connecting the first tubular joint and the second tubular joint, and second internal threads matched with the second external threads are arranged on the inner wall of the small hole of the stepped hole.

Further, the first internal thread and the second internal thread are arranged in opposite spiral directions.

Furthermore, a third external thread which is used for being in threaded fit with the internal thread of the connecting end of the pressure gauge is arranged on the outer wall of the first tubular joint.

Furthermore, the tubular transition section is provided with a limit stop ring in a radial outward protruding mode.

Furthermore, the outline of the limit baffle ring is in a shape of a straight prism.

Furthermore, a plurality of annular barb grooves used for matching with a binding hose to seal and fasten the hose on the damping pipe are arranged on the damping pipe.

The utility model provides a pressure gauge connecting device's beneficial effect lies in: compared with the prior art, the utility model provides a pressure gauge connecting device is through providing the damping pipe that links to each other with the manometer interface on governing valve upper reaches or the low reaches pipeline is supporting, the transition joint that supplies the manometer conversion to be connected and with transition joint sealing connection in the locking sleeve on the damping pipe. Then at the in-process of adjusting the pressure in the nuclear power equipment pressure vessel, will be connected with the crossover sub of electron pressure gauge through the locking sleeve, connect fast and lock on the damping pipe, alright swiftly utilize original mechanical pressure gauge on the electron pressure gauge replacement pressure gauge interface, make the pressure value in the adjustment process carry out electronic display with the form of digit, be convenient for read the pressure value fast, accurately to the time that pressure adjustment lasts has been shortened, the accuracy of pressure adjustment has been improved. In addition, the damping tube can reduce the influence of the pipeline pressure fluctuation variation factor on the electronic pressure gauge, shorten the pressure adjusting time and further improve the accuracy of pressure adjustment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a pressure gauge connection device according to an embodiment of the present invention;

fig. 2 is an exploded view of a pressure gauge connection device according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a pressure gauge connection device according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a locking sleeve of a pressure gauge connection device according to an embodiment of the present invention.

Wherein, in the drawings, the reference numerals are mainly as follows:

1-a damping tube; 11-water inlet end; 12-water outlet end; 13-a first external thread; 14-a necked tube section; 15-a threaded pipe section; 16-connecting the pipe sections;

2-a transition joint; 21-a first tubular joint; 211-third external thread; 22-a second tubular joint; 221-second external thread; 23-a tubular transition section; 231-a limit stop ring;

3-locking sleeve; 31-a first internal thread; 32-a second internal thread;

4-annular barb groove; 5-fluid channel.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "connected" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 3, the pressure gauge connecting device of the present invention will now be described. The utility model provides a pressure gauge connecting device, including being used for with be located the manometer interface on the pipeline of nuclear power equipment governing valve upper reaches or low reaches and link to each other and play damping effect's damping tube 1 to the pressure fluctuation in this pipeline, a locking sleeve 3 for transition joint 2 of pressure gauge is connected in the conversion and with transition joint 2 sealed locking on damping tube 1, 1 axial both ends of damping tube are formed with respectively and are used for arranging the end 11 of intaking in the pipeline in and are used for stretching out the outside water outlet 12 of manometer interface, it is equipped with water inlet port to intake end 11, water outlet 12 is equipped with water outlet port, and be equipped with on the outer wall of damping tube 1 and be used for the first external screw thread 13 with the internal thread complex of manometer interface.

The utility model provides a pressure gauge connecting device for coordinating governing valve adjustment nuclear power equipment pressure vessel pressure compares with prior art, through providing with governing valve upper reaches or the supporting damping tube 1 that links to each other of manometer interface on the low reaches pipeline, supply transition joint 2 that the manometer conversion is connected and with the locking sleeve 3 of transition joint 2 sealing connection on damping tube 1. Then in the in-process of adjusting the pressure in the nuclear power equipment pressure vessel, there is transition joint 2 of electron pressure gauge through locking sleeve 3 with the conversion connection, convenient and fast ground connects in the play water end 12 of damping pipe 1, on installing the manometer interface on governing valve upper reaches or low reaches pipeline with the electron pressure gauge connection, utilize original mechanical pressure gauge on the electron pressure gauge replacement manometer interface, make the pressure value in the adjustment process carry out electronic display with the form of digit, increase the accuracy and the rapidity that the pressure value read, thereby the time that pressure adjustment lasts has been shortened, the accuracy of pressure adjustment has been improved. In addition, the damping tube 1 can play a damping role in damping pressure fluctuation in the pipeline, the influence of pipeline pressure fluctuation variation factors on the electronic pressure gauge can be reduced, the pressure adjusting time is shortened, and the accuracy of pressure adjustment is further improved.

Further, please refer to fig. 2 and fig. 3 together, as a specific embodiment of the pressure gauge connection device provided by the present invention, the damping tube 1 includes a neck section 14 for extending into the pipeline, a threaded section 15 having a first external thread 13 on an outer wall thereof, and a connection section 16 for connecting the neck section 14 and the threaded section 15, the water inlet end 11 is formed at one end of the neck section 14 far from the connection section 16, and the water outlet end 12 is formed at one end of the threaded section 15 far from the connection section 16.

In this embodiment, the damping tube 1 includes a necking tube section 14, a threaded tube section 15 and a connecting tube section 16 connecting the necking tube section 14 and the threaded tube section 15, and a first external thread 13 in thread fit with the internal thread of the pressure gauge connector is arranged on the outer wall of the threaded tube section 15, so that the damping tube 1 and the pressure gauge connector can be conveniently connected in a matching manner. In addition, the necking pipe section 14 of the damping pipe 1 extends into the pipeline, and the connecting pipe section 16 is arranged between the necking pipe section 14 and the thread pipe section 15, so that the narrow fluid channel 5 formed by the necking pipe section 14, the connecting pipe section 16 and the inner pipe cavity of the thread pipe section 15 can be well utilized, a good damping effect is achieved on pressure fluctuation in the pipeline, the influence of the pressure fluctuation in the pipeline on the pressure measurement of the electronic pressure gauge is reduced, the continuous time of pressure adjustment is shortened, and the accuracy of pressure adjustment is improved.

Further, please refer to fig. 2 and fig. 3 together, as the utility model provides a pressure gauge connecting device's a specific implementation, the external diameter of necking down pipeline section 14 diminishes gradually by the direction of play water end 12 to the end 11 of intaking, avoids damping tube 1 to cause the interference at the in-process that inserts the pipeline through the manometer interface to reduce damping tube 1 to the resistance of pressure rivers in the pipeline, reduce the influence of the pressure fluctuation in the pipeline to electronic pressure gauge measuring pressure.

Further, please refer to fig. 3 and fig. 4 together, as a specific embodiment of the pressure gauge connection device provided by the present invention, a step hole is provided in the locking sleeve 3, a first internal thread 31 in threaded engagement with the first external thread 13 is provided on an inner wall of a large hole of the step hole, and a small hole of the step hole is connected with the transition joint 2 in a sealing manner.

In this embodiment, a stepped hole is formed in the locking sleeve 3, the first internal thread 31 passing through the large hole of the stepped hole is in threaded connection with the first external thread 13 of the damping tube 1, and a limiting step is formed by using a stepped surface in the stepped hole, so that the connection efficiency is improved, and the connection stability is enhanced.

Further, please refer to fig. 2 and fig. 3 together, as a specific embodiment of the pressure gauge connection device provided by the present invention, the transition joint 2 includes a first tubular joint 21 for being connected with the connection end of the pressure gauge in a sealing manner, a second tubular joint 22 provided with a second external thread 221, and a tubular transition section 23 connecting the first tubular joint 21 and the second tubular joint 22, the outer wall of the second tubular joint 22 is provided with a second external thread 221, and the inner wall of the small hole of the stepped hole is provided with a second internal thread 32 in threaded engagement with the second external thread 221.

In this embodiment, the transition joint 2 includes a tubular transition section 23 located at the middle position, and a first tubular joint 21 and a second tubular joint 22 located at the two ends of the tubular transition section 23, the first tubular joint 21 and the second tubular joint 22 are connected into a whole through the tubular transition section 23, the outer wall of the second tubular joint 22 is provided with a second external thread 221, the inner wall of the small hole of the stepped hole is provided with a second internal thread 32 in threaded fit with the second external thread 221, the pressure gauge can be conveniently and quickly switched and connected to the water outlet end 12 of the damping tube 1 by using the locking sleeve 3, the connection efficiency of the electronic pressure gauge is improved, and the duration of pressure adjustment is shortened.

Preferably, referring to fig. 2 and 3 together, as an embodiment of the pressure gauge connection device provided by the present invention, the first tubular joint 21, the second tubular joint 22 and the tubular transition section 23 are integrally formed to enhance the stability.

Preferably, the first internal thread 31 and the second internal thread 32 are arranged in opposite spiral directions, so that the first internal thread 31 and the second internal thread 32 are arranged in opposite spiral directions on the inner wall of the large hole of the stepped hole and the inner wall of the small hole of the stepped hole respectively: when the electronic pressure gauge is connected and assembled on the pressure gauge interface, the transition joint 2 connected with the electronic pressure gauge can be quickly connected and locked on the damping pipe 1 through screwing and rotating the locking sleeve 3 clockwise; and then when demolising the electron pressure gauge from the manometer interface, the locking sleeve 3 is twisted anticlockwise to the accessible, can dismantle convenient and practical, efficient from damping pipe 1 with the transition joint 2 who is connected with the electron pressure gauge fast.

Further, please refer to fig. 2 and fig. 3 together, as an embodiment of the pressure gauge connecting device provided by the present invention, the outer wall of the first tubular joint 21 is provided with a third external thread 211 for matching with the internal thread of the connecting end of the pressure gauge, so as to facilitate the connection of the electronic pressure gauge and the transition joint 2, improve the connection efficiency, and enhance the connection stability and sealing performance.

Further, please refer to fig. 2 and fig. 3 together, as a specific embodiment of the pressure gauge connecting device provided by the present invention, the tubular transition section 23 is provided with a limit stop ring 231 protruding outward in the radial direction, and the limit stop ring 231 is provided in the radial direction protruding outward of the tubular transition section 23, so that when the depth of the second tubular joint 22 screwed into the locking sleeve 3 reaches a predetermined depth, the limit stop ring 231 is supported by the end of the locking sleeve 3 for limiting, so as to enhance the stability of the connection between the locking sleeve 3 and the transition joint 2. Meanwhile, the limiting stop ring 231 is arranged on the tubular transition section 23 in a radially outward protruding manner, so that when the screwing depth of the first tubular joint 21 into the connecting end of the pressure gauge reaches a preset depth, the limiting stop ring 231 is abutted against the end part of the connecting end of the pressure gauge for limiting, and the connection stability of the locking sleeve 3 and the pressure gauge is enhanced.

Further, please refer to fig. 2 and fig. 3 together, as a specific embodiment of the pressure gauge connection device provided by the present invention, the outline of the limit stop ring 231 is in a shape of a straight prism, preferably, the outline of the limit stop ring 231 is in a shape of a straight hexagonal prism, so as to facilitate the rotation of the limit stop ring 231 through the clamping of tools such as a wrench, etc. to facilitate the fastening connection or the loosening detachment between the connection ends of the first tubular joint 21 and the pressure gauge, and between the second tubular joint 22 and the locking sleeve 3.

Of course, the outline of the limit stop ring 231 may be a right octagonal prism, a right twelve prism, or a right sixteen prism, etc., which is not limited herein.

Further, referring to fig. 2 and 3, as an embodiment of the pressure gauge connection device of the present invention, a plurality of annular barb grooves 4 are formed on the damping tube 1 for cooperating with the binding hose to seal and fasten the hose to the damping tube 1. In this embodiment, be equipped with a plurality of annular barb grooves 4 on the outer wall of damping tube 1, and a plurality of annular barb grooves 4 set up along 1 axial direction parallel interval of damping tube, so that when the manometer interface of on-the-spot pipeline does not have quick-operation joint, the accessible installs the crossover head additional at valve low reaches pipeline and utilizes hose connection to damping tube 1, a plurality of annular barb grooves 4 conveniently utilize the rope to bind the hose and fasten on damping tube 1, when preventing that hose and damping tube 1 from taking place the slippage, still can strengthen the leakproofness of being connected between hose and the damping tube 1, be favorable to the pressure adjustment construction, strengthen pressure gauge connecting device's commonality. And, a plurality of annular barb grooves 4 are arranged at intervals along the axial direction of the damping tube 1 so as to further enhance the sealing property of the connection between the hose and the damping tube 1.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A pressure gauge attachment, characterized by: the damping pipe is used for being matched and connected with a pressure gauge interface on a pipeline positioned at the upstream or the downstream of the regulating valve and playing a damping role in damping pressure fluctuation in the pipeline, the transition joint is used for being connected with the pressure gauge in a conversion mode, the locking sleeve is used for tightly locking the transition joint on the damping pipe in a sealing mode, a water inlet end used for being arranged in the pipeline and a water outlet end used for extending out of the pressure gauge interface are formed at the two axial ends of the damping pipe respectively, and first external threads used for being in threaded fit with internal threads of the pressure gauge interface are arranged on the outer wall of the damping pipe.

2. The manometer connection device of claim 1, wherein: the damping pipe comprises a necking pipe section extending into the pipeline, a thread pipe section with the outer wall provided with the first external thread and a connecting pipe section for connecting the necking pipe section and the thread pipe section, the water inlet end is formed at one end, far away from the connecting pipe section, of the necking pipe section, and the water outlet end is formed at one end, far away from the connecting pipe section, of the thread pipe section.

3. The manometer connection device of claim 2, wherein: the outer diameter of the necking pipe section is gradually reduced from the water outlet end to the water inlet end.

4. The manometer connection device of claim 2, wherein: the locking sleeve is internally provided with a step hole, a first internal thread in threaded fit with the first external thread is arranged on the inner wall of a large hole of the step hole, and a small hole of the step hole is in sealing connection with the transition joint.

5. The manometer connection device of claim 4, wherein: the transition joint comprises a first tubular joint used for being connected with the connecting end of the pressure gauge in a sealing mode, a second tubular joint with the outer wall provided with second external threads, and a tubular transition section for connecting the first tubular joint and the second tubular joint, wherein second internal threads matched with the second external threads are arranged on the inner wall of the small hole of the stepped hole.

6. The manometer connection device of claim 5, wherein: the first internal thread and the second internal thread are arranged in opposite spiral directions.

7. The manometer connection device of claim 5, wherein: and a third external thread which is used for being in threaded fit with the internal thread of the connecting end of the pressure gauge is arranged on the outer wall of the first tubular joint.

8. The manometer connection device of claim 5, wherein: the tubular transition section is provided with a limit stop ring in a radial outward protruding mode.

9. The manometer connection device of claim 8, wherein: the outline of the limiting baffle ring is in a shape of a straight prism.

10. The pressure gauge attachment of any one of claims 1 to 9, wherein: the damping pipe is provided with a plurality of annular barb grooves which are used for matching with a binding hose to seal and fasten the hose on the damping pipe.