CN210135356U - Pressure gauge joint - Google Patents
Pressure gauge joint Download PDFInfo
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- CN210135356U CN210135356U CN201920547091.9U CN201920547091U CN210135356U CN 210135356 U CN210135356 U CN 210135356U CN 201920547091 U CN201920547091 U CN 201920547091U CN 210135356 U CN210135356 U CN 210135356U
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- hole
- conical head
- wall
- pressure gauge
- ring
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- 238000007789 sealing Methods 0.000 claims description 28
- 239000010779 crude oil Substances 0.000 abstract description 43
- 239000003921 oil Substances 0.000 abstract description 40
- 230000002528 anti-freeze Effects 0.000 abstract description 36
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000007710 freezing Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a pressure gauge joint belongs to the oil engineering field. This pressure gauge connects includes: the spring and the guide ring are sleeved on the guide rod, the first end of the spring is in contact with the upper end face of the conical head, the second end of the spring is in contact with the guide ring, the outer wall of the guide ring is connected with the hole wall of the first through hole, and the target part of the conical head is clamped on the first end of the second through hole, so that the antifreezing fluid in the containing cavity cannot flow out of the containing cavity to the second through hole. When crude oil in the oil pipeline flows to the third through hole and pushes the conical head to move upwards and compress the spring, the crude oil flowing to the third through hole flows to the accommodating cavity from a gap between the side wall of the conical head and the first end of the second through hole. Because the containing cavity is internally provided with the antifreeze, when the crude oil flows into the containing cavity and continues to move upwards, the antifreeze in the containing cavity is pushed upwards until the antifreeze enters the pressure gauge, so that the pressure gauge cannot be frozen and expanded outdoors, and the normal work of the pressure gauge cannot be influenced.
Description
Technical Field
The utility model relates to a petroleum engineering field especially relates to a pressure gauge joint.
Background
When crude oil is conveyed through an oil pipeline, a pressure gauge is often required to be connected to the oil pipeline to detect the pressure of the crude oil in the oil pipeline in real time, so that the pressure condition of the crude oil in the pipeline can be known in time.
At present, when a pressure gauge is connected to an oil pipeline, the pressure gauge is often directly connected to a valve connected with the oil pipeline, and when crude oil in the oil pipeline flows into the pressure gauge through the valve, the pressure gauge can detect the pressure of the fluid in the oil pipeline. However, when the pressure gauge is directly installed in an oil pipeline in a low temperature environment, after the crude oil in the oil pipeline flows into the pressure gauge, the water in the crude oil may freeze in the pressure gauge, and when the freezing is serious, the pressure gauge may be expanded and damaged, and the pressure gauge cannot detect the pressure of the crude oil in the oil pipeline.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pressure gauge joint can solve the problem of the easy inflation damage of pressure gauge among the correlation technique. The technical scheme is as follows:
in a first aspect, a pressure tap is provided, the pressure tap comprising: the device comprises a body, a guide ring, a conical head valve core and a spring;
the first end of the body is connected with a pressure gauge, the second end of the body is connected with a valve connected on an oil pipeline, the body is provided with a first through hole, a second through hole and a third through hole in the axial direction, the first through hole is communicated with the third through hole through the second through hole, and the aperture of the first through hole is larger than that of the second through hole;
the conical head valve core comprises a guide rod and a conical head, wherein the first end of the guide rod is connected with the upper end face of the conical head, the guide rod, the guide ring and the spring are all positioned in the first through hole, the spring and the guide ring are all sleeved on the guide rod, the first end of the spring is contacted with the upper end face of the conical head, the second end of the spring is contacted with the guide ring, the natural length of the spring is greater than the distance between the upper end face of the conical head and the guide ring, the outer wall of the guide ring is connected with the hole wall of the first through hole, the target part of the conical head is clamped on the first end of the second through hole, and the target part of the conical head is a part in the side wall of the conical head, wherein the hole diameter of the conical head is equal to that of the second through hole;
and an accommodating cavity is formed among the pressure gauge, the hole wall of the first through hole and the side wall of the conical head and is used for accommodating an antifreezing solution.
Optionally, the aperture of the third through hole is larger than the aperture of the second through hole.
Optionally, the outer wall of the guide ring is composed of a first portion, a second portion, a third portion and a fourth portion which are adjacent in sequence, the first portion is adjacent to the fourth portion, the first portion and the third portion are connected to the hole wall of the first through hole, and the second portion and the fourth portion are not in contact with the hole wall of the first through hole.
Optionally, the pressure tap further comprises: plugging with a thread;
the outer wall of the body is provided with a threaded hole, the threaded hole is communicated with the first through hole, the first end of the screw plug penetrates through the threaded hole, and the screw plug is in threaded connection with the threaded hole.
Optionally, the pressure tap further comprises: a first seal ring;
the side wall of the pipe plug is provided with an outer edge, the first sealing ring is sleeved on the pipe plug, and the first sealing ring is clamped between the outer edge and the outer wall of the body.
Optionally, the first sealing ring is one of an O-ring and a V-ring.
Optionally, the pressure tap further comprises: a second seal ring;
the conical head is characterized in that a first annular groove is formed in the target part of the conical head, the groove wall of the first annular groove is parallel to the upper end face of the conical head, the second sealing ring is located in the first annular groove, and the second sealing ring is in contact with the first end of the second through hole.
Optionally, the second sealing ring is one of an O-ring and a V-ring.
Optionally, the cross-sectional shape of the body is hexagonal or quadrangular.
Optionally, a second annular groove is formed in the outer wall of the body and used for being matched with a wrench to mount or dismount the pressure gauge joint.
In a second aspect, a pressure detection system is provided, the pressure detection system comprising: a pressure gauge, an oil pipeline, a valve and the pressure gauge joint of the first aspect;
the first end of the body is connected with the pressure gauge, the second end of the body is connected with the first connector of the valve, and the second connector of the valve is connected with the oil pipeline.
The utility model provides a technical scheme can bring following beneficial effect at least: because the spring and the guide ring are sleeved on the guide rod, the first end of the spring is in contact with the upper end face of the conical head, the second end of the spring is in contact with the guide ring, the outer wall of the guide ring is connected with the hole wall of the first through hole, and the target part of the conical head is clamped on the first end of the second through hole, so that the antifreeze in the containing cavity cannot flow out of the containing cavity to the second through hole. After crude oil in the oil pipeline flows to the third through hole, the conical head can be pushed to move upwards, and when the conical head moves upwards, the spring can be compressed, so that crude oil flowing to the third through hole flows to the accommodating cavity from a gap between the side wall of the conical head and the first end of the second through hole. Because the containing cavity is internally provided with the antifreeze, when the crude oil flows into the containing cavity and continues to move upwards, the antifreeze in the containing cavity can be pushed upwards until the antifreeze enters the pressure gauge, and the pressure of the crude oil in the oil pipeline can be detected through the pressure gauge. As only the antifreeze can enter the pressure gauge and crude oil cannot enter the pressure gauge, the pressure gauge cannot be frozen even if the pressure gauge is outdoors, and the normal work of the pressure gauge cannot be influenced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described 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 creative efforts.
Fig. 1 is a schematic structural diagram of a first pressure gauge joint provided in an embodiment of the present invention;
fig. 2 is a schematic top view of a body according to an embodiment of the present invention;
fig. 3 is a schematic top view of a guide ring according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second pressure gauge joint provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a pressure detection system according to an embodiment of the present invention.
Reference numerals:
1: a body, 2: guide ring, 3: cone head valve core, 4: spring, 5: plug, 6: first seal ring, 7: second seal ring, 11: first through hole, 12: second through hole, 13: third through hole, 14: second annular groove, 16: first end of body, 17: second end of the body, 21: first portion, 22: second portion, 23: third portion, 24: fourth portion, 31: guide rod, 32: cone head, 51: outer edge, 100: pressure gauge, 101: oil pipeline, 102: valve, 103: a pressure gauge joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a structural schematic diagram of a pressure gauge joint provided by the embodiment of the utility model, as shown in fig. 1, this pressure gauge joint includes: the device comprises a body 1, a guide ring 2, a conical head valve core 3 and a spring 4.
The first end 16 of the body 1 is connected with a pressure gauge, the second end 17 of the body 1 is connected with a valve connected on an oil pipeline, the body 1 is provided with a first through hole 11, a second through hole 12 and a third through hole 13 in the axial direction, the first through hole 11 is communicated with the third through hole 13 through the second through hole 12, and the aperture of the first through hole 11 is larger than that of the second through hole 12; the conical head valve core 3 comprises a guide rod 31 and a conical head 32, wherein the first end of the guide rod 31 is connected with the upper end face of the conical head 32, the guide rod 31, a guide ring 2 and a spring 4 are all positioned in a first through hole 11, the spring 4 and the guide ring 2 are both sleeved on the guide rod 31, the first end of the spring 4 is contacted with the upper end face of the conical head 32, the second end of the spring 4 is contacted with the guide ring 2, the natural length of the spring 4 is greater than the distance between the upper end face of the conical head 32 and the guide ring 2, the outer wall of the guide ring 2 is connected with the hole wall of the first through hole 11, the target part of the conical head 32 is clamped on the first end of the second through hole 12, and the target part of the conical head 32 is the part in the side wall of the conical head 32, which is; an accommodating cavity is formed among the pressure gauge, the hole wall of the first through hole 11 and the side wall of the conical head 32 and is used for accommodating anti-freezing liquid.
It should be noted that the cross-sectional shape of the body 1 may be hexagonal (as shown in fig. 2), quadrangular, circular, etc. Wherein, when the cross-sectional shape of body 1 was hexagon or quadrangle, the outer wall of body 1 can be pressed from both sides tightly more easily with the spanner, is difficult to skid in body 1's circumference, is convenient for install this pressure meter connector on the valve of connecting on oil pipeline to and be convenient for follow this valve and dismantle this pressure meter connector.
In addition, the connection between the first end 16 of the body 1 and the pressure gauge may be a threaded connection. Wherein, can be provided with the screw thread on the pore wall of first through-hole 11, the aperture of first through-hole 11 can set up according to the diameter of the joint of manometer, as long as guarantee that the joint of manometer can just carry out threaded connection with first through-hole 11 after stretching into first through-hole 11. The connection between the second end 17 of the body 1 and the valve connected to the oil pipeline may also be a threaded connection. Wherein, can be provided with the screw thread on the outer wall of the second end 17 of body 1, the external diameter of the second end 17 of body 1 can set up according to the diameter of the joint of the valve of being connected on the oil pipeline, as long as guarantee that the second end 17 of body 1 stretches into in the joint of the valve of being connected on the oil pipeline later just can carry out threaded connection with this valve can.
In addition, the diameter of the second through hole 12 can be set according to the size of the conical head 32, as long as the first end of the second through hole 12 can just clamp the target part of the conical head 32. In addition, in order to make the third through hole 13 can hold as much crude oil as possible, so that the conical head 32 can be pushed to move upwards under the action of the crude oil pressure, the crude oil can rapidly enter the first through hole 11, then the antifreeze in the holding cavity is rapidly pushed to move upwards to the pressure gauge, the pressure of the crude oil in the oil pipeline is detected through the pressure gauge, and the aperture of the third through hole 13 can be larger than that of the second through hole 12.
In addition, the guide rod 31 and the conical head 32 may be integrally formed or separately formed, and when the guide rod 31 and the conical head 32 are separately formed, the connection mode between the first end of the guide rod 31 and the upper end surface of the conical head 32 may be welding, screwing, or the like. In order to clamp the target portion of the conical head 32 on the first end of the second through hole 12, the target portion of the conical head 32 is uniformly stressed to effectively block the communication between the first through hole 11 and the second through hole 12, the central axis of the guide rod 31 may be collinear with the central axis of the conical head 32, that is, the connection point between the first end of the guide rod 31 and the upper end surface of the conical head 32 may be the central point of the upper end surface of the conical head 32.
Moreover, the inner diameter of the guide ring 2 and the inner diameter of the spring 4 can be slightly larger than the diameter of the guide rod 31, so long as it is ensured that the guide ring 2 and the spring 4 can be just sleeved on the guide rod 31. The connection between the outer wall of the guide ring 2 and the wall of the first through hole 11 may be welding, screwing, etc. The outer diameter of the spring 4 may be slightly larger than the inner diameter of the guide ring 2, so long as it is ensured that the second end of the spring 4 does not extend out from the gap between the inner wall of the guide ring 2 and the guide rod 31 when the spring 4 is sleeved on the guide rod 31.
Finally, the amount of anti-icing liquid in the holding chamber can be set according to actual needs. The antifreeze solution injected from the first through hole 11 can flow from the gap between the inner wall of the guide ring 2 and the guide rod 31 into the space below the guide ring 2 in the first through hole 11.
In practical application, the second end 17 of the body 1 may be connected to a valve connected to an oil pipeline, and then the conical head valve element 3 is moved from the first through hole 11 to the second through hole 12 until the target portion of the conical head 32 is clamped on the first end of the second through hole 12, and then the spring 4 and the guide ring 2 are sequentially sleeved on the guide rod 31. The guide ring 2 is moved further toward the conical head 32 until the spring 4 is compressed to a certain extent, and the outer wall of the guide ring 2 is connected to the hole wall of the first through hole 11. Then, the antifreeze is injected into the containing chamber from the first through hole 11. After injecting a suitable amount of antifreeze into the containment chamber, a pressure gauge may be attached to the first end 16 of the body 1 of the pressure tap. The pressure of crude oil in the oil pipeline can be detected through a pressure gauge subsequently.
It is worth to be noted that, because the spring 4 and the guide ring 2 are both sleeved on the guide rod 31, the first end of the spring 4 is in contact with the upper end surface of the conical head 32, the second end of the spring 4 is in contact with the guide ring 2, the outer wall of the guide ring 2 is connected with the hole wall of the first through hole 11, and the target part of the conical head 32 is clamped on the first end of the second through hole 12, the antifreeze in the containing cavity cannot flow out of the containing cavity to the second through hole 12. After the crude oil in the oil pipeline flows to the third through hole 13, the conical head 32 can be pushed to move upwards, and when the conical head 32 moves upwards, the spring 4 can be compressed, so that the crude oil flowing to the third through hole 13 flows to the accommodating cavity from a gap between the side wall of the conical head 32 and the first end of the second through hole 12. Because the containing cavity is internally provided with the antifreeze, when the crude oil flows into the containing cavity and continues to move upwards, the antifreeze in the containing cavity can be pushed upwards until the antifreeze enters the pressure gauge, and the pressure of the crude oil in the oil pipeline can be detected through the pressure gauge. As only the antifreeze can enter the pressure gauge and crude oil cannot enter the pressure gauge, the pressure gauge cannot be frozen even if the pressure gauge is outdoors, and the normal work of the pressure gauge cannot be influenced.
Alternatively, as shown in fig. 3, the outer wall of the guide ring 2 may be composed of a first portion 21, a second portion 22, a third portion 23 and a fourth portion 24 which are adjacent to each other in sequence, the first portion 21 is further adjacent to the fourth portion 24, both the first portion 21 and the third portion 23 are connected to the wall of the first through hole 11, and neither the second portion 22 nor the fourth portion 24 is in contact with the wall of the first through hole 11.
It should be noted that the first portion 21 and the third portion 23 may be symmetrical or asymmetrical, and the first portion 21 and the third portion 23 may be circular arcs having the same curvature as that of the hole wall of the first through hole 11.
It should be noted that, when the first portion 21 and the third portion 23 are both connected to the wall of the first through hole 11, and neither the second portion 22 nor the fourth portion 24 is in contact with the wall of the first through hole 11, the antifreeze solution injected from the first through hole 11 may flow from the gap between the inner wall of the guide ring 2 and the guide rod 31 to the space below the guide ring 2 in the first through hole 11, and may flow from the gap between the second portion 22 and the wall of the first through hole 11, and the gap between the fourth portion 24 and the wall of the first through hole 11 to the space below the guide ring 2 in the first through hole 11, so as to rapidly inject more antifreeze solution into the accommodating chamber. In addition, when the crude oil in the oil pipeline flows into the third through hole 13 and pushes the conical head 32 to move upwards, the crude oil flowing from the gap between the side wall of the conical head 32 and the first end of the second through hole 12 to the accommodating cavity can push the antifreeze solution to flow to the pressure gauge from the gap between the inner wall of the guide ring 2 and the guide rod 31, and can also push the antifreeze solution to flow to the pressure gauge from the gap between the second part 22 and the hole wall of the first through hole 11 and the gap between the fourth part 24 and the hole wall of the first through hole 11, so that the flow speed of the crude oil and the antifreeze solution in the accommodating cavity is increased, and the pressure detection efficiency of the pressure gauge is improved.
Optionally, as shown in fig. 4, the pressure tap may further include: and (5) a plug. The outer wall of the body 1 is provided with a threaded hole, the threaded hole is communicated with the first through hole 11, the first end of the plug 5 penetrates through the threaded hole, and the plug 5 is in threaded connection with the threaded hole.
It should be noted that, the aperture of the threaded hole may be slightly larger than the diameter of the first end of the plug 5, as long as it is ensured that the first end of the plug 5 can just pass through the threaded hole, and the plug 5 can just be in threaded connection with the threaded hole, the embodiment of the present invention does not specifically limit this.
It is worth to say that when the pressure gauge joint is used, the plug 5 can be screwed in the threaded hole, so that the antifreeze, crude oil and the like in the containing cavity can not flow out from the space between the plug 5 and the threaded hole. When needing to overhaul or dismantle this pressure gauge joint, can unscrew plug 5 earlier, slowly leak the pressure that holds the intracavity, overhaul and dismantle the work again when the pressure that holds the intracavity drops to being close to near zero, guaranteed to overhaul and dismantle going on smoothly of work.
Further, as shown in fig. 4, the pressure tap may further include: a first seal ring 6. An outer edge 51 is arranged on the side wall of the plug 5, the first sealing ring 6 is sleeved on the plug 5, and the first sealing ring 6 is clamped between the outer edge 51 and the outer wall of the body 1.
The first seal ring 6 may be an O-ring, a V-ring, or the like. The inner diameter of the first sealing ring 6 can be slightly larger than the diameter of the plug 5, as long as it is ensured that the first sealing ring 6 can be just sleeved on the plug 5.
It is worth to be noted that the first sealing ring 6 is sleeved on the plug 5, and when the pressure gauge joint is used, the plug 5 can be screwed in the threaded hole until the first sealing ring 6 is clamped between the outer edge 51 and the outer wall of the body 1. Because the first sealing ring 6 has good sealing performance, even if antifreeze, crude oil and the like in the containing cavity enter a gap between the plug 5 and the threaded hole, the antifreeze and the crude oil cannot flow out from the space between the first sealing ring 6 and the outer wall of the body 1, and therefore the accuracy of the pressure detected by the pressure gauge is ensured.
Optionally, as shown in fig. 4, the pressure tap may further include: a second seal ring 7. A first annular groove is formed in the target part of the conical head 32, the groove wall of the first annular groove is parallel to the upper end face of the conical head 32, the second sealing ring 7 is located in the first annular groove, and the second sealing ring 7 is in contact with the first end of the second through hole 12.
It should be noted that the first annular groove may be a circle of groove arranged on the target portion of the conical head 32 along the circumferential direction of the conical head 32, the width of the first annular groove may be slightly greater than the thickness of the second sealing ring 7, and the depth of the first annular groove may be set according to the inner diameter and the outer diameter of the second sealing ring 7, as long as it is ensured that after the second sealing ring 7 is located in the first annular groove, the second sealing ring 7 just can contact with the first end of the second through hole 12.
The second seal ring 7 may be an O-ring, a V-ring, or the like.
It is worth to be noted that, because the second seal ring 7 has good sealing performance, when the second seal ring 7 is located in the first annular groove, the second seal ring 7 is in contact with the first end of the second through hole 12, and the target portion of the conical head 32 is clamped on the first end of the second through hole 12, the antifreeze in the containing cavity cannot flow out of the containing cavity to the second through hole 12, so that the pollution of the antifreeze on crude oil in the oil pipeline is effectively avoided.
Optionally, as shown in fig. 4, a second annular groove 14 may be further provided on the outer wall of the body 1, and the second annular groove 14 is used for installing or removing a pressure gauge joint in cooperation with a wrench.
It should be noted that the second annular groove 14 may be a ring of grooves arranged on the outer wall of the body 1 along the circumferential direction of the body 1, and the depth and width of the second annular groove 14 may be set according to actual requirements. When the pressure tap is mounted on the valve connected to the oil pipeline by using the wrench, or when the pressure tap is dismounted from the valve connected to the oil pipeline by using the wrench, the movable portion of the wrench may be placed in the second annular groove 14, and then the body 1 is clamped by the movable portion of the wrench and rotated to mount the pressure tap on the valve, or the pressure tap is dismounted from the valve. Because the movable part of the wrench is positioned in the second annular groove 14, the position of the movable part of the wrench on the outer wall of the body 1 can be limited by the groove wall of the second annular groove 14, so that the wrench cannot slide on the outer wall of the body 1 along the axial direction in the process of rotating the body 1 through the wrench, and the efficiency of installing and disassembling the pressure gauge joint is improved.
In the embodiment of the present invention, since the spring 4 and the guide ring 2 are all sleeved on the guide rod 31, the first end of the spring 4 contacts with the upper end surface of the conical head 32, the second end of the spring 4 contacts with the guide ring 2, the outer wall of the guide ring 2 is connected with the hole wall of the first through hole 11, and the target portion of the conical head 32 is clamped on the first end of the second through hole 12, so that the anti-freezing solution in the containing cavity cannot flow out from the containing cavity to the second through hole 12. After the crude oil in the oil pipeline flows to the third through hole 13, the conical head 32 can be pushed to move upwards, and when the conical head 32 moves upwards, the spring 4 can be compressed, so that the crude oil flowing to the third through hole 13 flows to the accommodating cavity from a gap between the side wall of the conical head 32 and the first end of the second through hole 12. Because the containing cavity is internally provided with the antifreeze, when the crude oil flows into the containing cavity and continues to move upwards, the antifreeze in the containing cavity can be pushed upwards until the antifreeze enters the pressure gauge, and the pressure of the crude oil in the oil pipeline can be detected through the pressure gauge. As only the antifreeze can enter the pressure gauge and crude oil cannot enter the pressure gauge, the pressure gauge cannot be frozen even if the pressure gauge is outdoors, and the normal work of the pressure gauge cannot be influenced.
Fig. 5 is a schematic structural diagram of a pressure detection system according to an embodiment of the present invention, as shown in fig. 5, the pressure detection system may include: a pressure gauge 100, an oil pipeline 101, a valve 102 and a pressure gauge connector 103 in the above embodiments. The first end of the body of the pressure gauge connector 103 is connected with the pressure gauge 100, the second end of the body is connected with the first connector of the valve 102, and the second connector of the valve 102 is connected with the oil pipeline 101.
The embodiment of the utility model provides an in, be connected the first end of body with manometer 100, the second end of body and the first articulate of valve 102, after valve 102's second articulate and oil pipeline 101 are connected, alright with the pressure that detects crude oil in oil pipeline 101 through manometer 100. Because the spring and the guide ring in the pressure gauge joint 103 are both sleeved on the guide rod, the first end of the spring is in contact with the upper end surface of the conical head, the second end of the spring is in contact with the guide ring, the outer wall of the guide ring is connected with the hole wall of the first through hole, and the target part of the conical head is clamped on the first end of the second through hole, the antifreeze in the containing cavity cannot flow out of the containing cavity to the second through hole. After the crude oil in oil pipeline 101 flows to the third through-hole, can promote conical head rebound, when conical head rebound, can compress spring for the crude oil that flows to the third through-hole flows to holding the intracavity from the clearance between the lateral wall of conical head and the first end of second through-hole. Because the containing cavity is filled with the antifreeze, when the crude oil flows into the containing cavity and continues to move upwards, the antifreeze in the containing cavity is pushed upwards until the antifreeze enters the pressure gauge 100, and the pressure of the crude oil in the oil pipeline 101 can be detected through the pressure gauge 100. Since only the antifreeze solution enters the pressure gauge 100 and the crude oil cannot enter the pressure gauge 100, the pressure gauge 100 is not frozen even outdoors, and the normal operation of the pressure gauge 100 is not affected.
The above description is only an optional embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pressure tap, comprising: the device comprises a body (1), a guide ring (2), a conical head valve core (3) and a spring (4);
the first end (16) of the body (1) is connected with a pressure gauge, the second end (17) of the body (1) is connected with a valve connected on an oil pipeline, the body (1) is provided with a first through hole (11), a second through hole (12) and a third through hole (13) in the axial direction, the first through hole (11) is communicated with the third through hole (13) through the second through hole (12), and the aperture of the first through hole (11) is larger than that of the second through hole (12);
the conical head valve core (3) comprises a guide rod (31) and a conical head (32), the first end of the guide rod (31) is connected with the upper end face of the conical head (32), the guide rod (31), the guide ring (2) and the spring (4) are all positioned in the first through hole (11), the spring (4) and the guide ring (2) are both sleeved on the guide rod (31), the first end of the spring (4) is in contact with the upper end face of the conical head (32), the second end of the spring (4) is in contact with the guide ring (2), the natural length of the spring (4) is larger than the distance between the upper end face of the conical head (32) and the guide ring (2), the outer wall of the guide ring (2) is connected with the hole wall of the first through hole (11), the target part of the conical head (32) is clamped on the first end of the second through hole (12), the target part of the conical head (32) is a part of the side wall of the conical head (32) with the same aperture as that of the second through hole (12);
and an accommodating cavity is formed among the pressure gauge, the hole wall of the first through hole (11) and the side wall of the conical head (32), and the accommodating cavity is used for accommodating an antifreezing solution.
2. Pressure tap according to claim 1, characterised in that the third through hole (13) has a larger diameter than the second through hole (12).
3. The pressure tap according to claim 1, characterized in that the outer wall of the guide ring (2) is composed of a first portion (21), a second portion (22), a third portion (23) and a fourth portion (24) which are adjacent in this order, the first portion (21) is also adjacent to the fourth portion (24), the first portion (21) and the third portion (23) are both connected to the wall of the first through hole (11), and neither the second portion (22) nor the fourth portion (24) is in contact with the wall of the first through hole (11).
4. The pressure tap of claim 1 further comprising: a plug (5);
the outer wall of the body (1) is provided with a threaded hole, the threaded hole is communicated with the first through hole (11), the first end of the plug (5) penetrates through the threaded hole, and the plug (5) is in threaded connection with the threaded hole.
5. The pressure tap of claim 4 further comprising: a first seal ring (6);
be provided with outer edge (51) on the lateral wall of plug (5), first sealing washer (6) cover is established on plug (5), just first sealing washer (6) press from both sides and establish outer edge (51) with between the outer wall of body (1).
6. A pressure tap according to claim 5, characterised in that the first sealing ring (6) is any one of an O-ring and a V-ring.
7. The pressure tap of claim 1 further comprising: a second seal ring (7);
a first annular groove is formed in the target portion of the conical head (32), the groove wall of the first annular groove is parallel to the upper end face of the conical head (32), the second sealing ring (7) is located in the first annular groove, and the second sealing ring (7) is in contact with the first end of the second through hole (12).
8. A pressure tap according to claim 7, characterised in that the second sealing ring (7) is any one of an O-ring and a V-ring.
9. Pressure tap according to claim 1, characterised in that the cross-sectional shape of the body (1) is hexagonal or quadrangular.
10. Pressure tap according to claim 1, characterised in that a second annular groove (14) is provided on the outer wall of the body (1), said second annular groove (14) being intended to cooperate with a wrench for mounting or dismounting the pressure tap.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920547091.9U CN210135356U (en) | 2019-04-19 | 2019-04-19 | Pressure gauge joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920547091.9U CN210135356U (en) | 2019-04-19 | 2019-04-19 | Pressure gauge joint |
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| CN210135356U true CN210135356U (en) | 2020-03-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487008A (en) * | 2020-04-22 | 2020-08-04 | 广东电网有限责任公司 | Air pressure locking device for online detection of sulfur hexafluoride gas pressure |
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2019
- 2019-04-19 CN CN201920547091.9U patent/CN210135356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487008A (en) * | 2020-04-22 | 2020-08-04 | 广东电网有限责任公司 | Air pressure locking device for online detection of sulfur hexafluoride gas pressure |
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