CN217930981U - Sampling probe of gas detector - Google Patents
Sampling probe of gas detector Download PDFInfo
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- CN217930981U CN217930981U CN202122446091.XU CN202122446091U CN217930981U CN 217930981 U CN217930981 U CN 217930981U CN 202122446091 U CN202122446091 U CN 202122446091U CN 217930981 U CN217930981 U CN 217930981U
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- 239000000523 sample Substances 0.000 title claims abstract description 66
- 238000005070 sampling Methods 0.000 title claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 239000003292 glue Substances 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 241001233242 Lontra Species 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012855 volatile organic compound Substances 0.000 description 39
- 239000002689 soil Substances 0.000 description 13
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000400 irritating Toxicity 0.000 description 1
- 230000000622 irritating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The utility model relates to a sampling probe of gas detection appearance relates to check out test set's technical field, and it sets up on gas detection appearance, gas detection appearance includes the detector body, and threaded connection has a test probe on the top surface of detector body, and the one end that the detector body was kept away from to test probe has cup jointed one and has filtered gluey head, sampling probe pegs graft and glues the one end that the detector body was kept away from in the filtration, sampling probe includes the top head, the top head is kept away from the one end of detector body is most advanced, the top head is held closely the fixed surface of detector body is connected with the body, at least one air inlet has been seted up on the body, the body is kept away from the one end of top head is pegged graft on filtering gluey overhead. This application has the effect that makes sampling probe can more conveniently puncture the detection bag.
Description
Technical Field
The application relates to the field of detection equipment, in particular to a sampling probe of a gas detector.
Background
Most VOCs have unpleasant odor and are toxic, irritating and teratogenic, which can cause significant harm to human health.
VOCs can be stored in soil and then volatilize from the soil to the air, which has adverse effects on human health. Therefore, a gas detector is required to detect the concentration of VOCs in the soil. When the concentration of the VOCs in the soil is detected, a soil sample needs to be contained, then the soil sample is put into the detection bag, after the soil sample is placed in the detection bag for a period of time, the sampling probe of the gas detector is inserted into the detection bag to detect the concentration of the VOCs in the detection bag.
In view of the above-mentioned related technologies, the inventor believes that the end of a common sampling probe is horizontal, which is not easy to puncture a detection bag, and the detection bag will block the air inlet of the sampling probe when the detection bag is not punctured, so that the gas in the detection bag cannot enter the gas detector through the sampling probe, and the gas detector cannot detect the gas.
SUMMERY OF THE UTILITY MODEL
In order to reduce and detect bag shutoff sampling probe, lead to the unable condition through sampling probe gas detection appearance of the gas in the detection bag, this application provides a gas detection appearance's sampling probe.
The application provides a sampling probe of gas detector adopts following technical scheme:
the utility model provides a gas detection appearance's sampling probe, its sets up on gas detection appearance, gas detection appearance includes the detector body, and threaded connection has a test probe on the top surface of detector body, and the one end that test probe kept away from the detector body has cup jointed one and has filtered gluey head, sampling probe pegs graft and glues the one end that the detector body was kept away from to the head, sampling probe includes the top head, the top head is kept away from the one end of detector body is most advanced, the top head is held closely the fixed surface of detector body is connected with the body, at least one air inlet has been seted up on the body, the body is kept away from the one end of top head is pegged graft on filtering gluey overhead.
By adopting the technical scheme, when the concentration of VOCs in the detection bag needs to be detected, an operator holds the detector body, then the detector body is moved towards the direction close to the detection bag, when the conical jacking head is in contact with the detection bag, the detector body is continuously moved, the jacking head is enabled to puncture the detection bag, then the detector body is continuously moved until the air inlet is completely positioned in the detection bag, at the moment, the VOCs in the detection bag enter the pipeline along the air inlet, the VOCs in the pipeline enter the detector body along the filtering rubber head and the detection probe, finally, the detector body detects the concentration of the VOCs, the jacking head punctures the detection bag, the sampling probe can more conveniently move into the detection bag, the gas in the detection bag enters the gas detector through the sampling probe, the detection efficiency of the gas detector is improved, the air inlet of the sampling probe cannot be blocked, and the phenomenon that the gas detector alarms due to the blocking of the air inlet of the sampling probe is reduced.
Optionally, the number of the air inlets is one, the air inlets are located on the side wall of the pipe body, and the air inlets are formed in the side wall of the pipe body.
Through adopting above-mentioned technical scheme, when the position that the air inlet was seted up to the body was located and detects the bag, during VOCs got into the body along the air inlet, avoided detecting the bag and covered the air inlet completely as far as possible to reduce the possibility that gas detection appearance sent the police dispatch newspaper.
Optionally, the air inlet is provided with a plurality ofly, and is a plurality of the air inlet is located on the lateral wall of body, the air inlet is seted up on the lateral wall of body.
Through adopting above-mentioned technical scheme, when the position that the air inlet was seted up to the body was located and detects the bag, because the air inlet has been seted up a plurality ofly, the flying dust that reduces among the VOCs is with the possibility of all air inlet shutoff to avoid gas detection appearance to send out the police dispatch newspaper as far as possible.
Optionally, the diameter of the pipe body is larger than that of the bottom surface of the jacking head, one end, close to the jacking head, of the pipe body is in a blocking shape, and the air inlet is formed in the end face, close to the jacking head, of the pipe body.
Through adopting above-mentioned technical scheme, when the position that the air inlet was seted up to the body was located the detection bag, it causes the gas detection appearance to send out the possibility of police dispatch newspaper with the air inlet shutoff to reduce the flying dust.
Optionally, be equipped with the subassembly that absorbs water in the body, the subassembly that absorbs water includes first otter board and gauze.
Through adopting above-mentioned technical scheme, when soil sample when detecting the bag and stewing, during evaporation of water to the VOCs in the soil sample, when the VOCs gets into the detector body along the air inlet, the steam that carries among the VOCs can cause the influence to the life of gas detection appearance, and when the VOCs got into the body along the air inlet, the subassembly that absorbs water absorbed the steam among the VOCs, reduced the possibility that steam got into in the detector body.
Optionally, a plurality of intercepting blocks are fixedly connected to the inner side wall of the tube body, the intercepting blocks are perpendicular to the side wall of the tube body, the first screen plate is located on one side, away from the jacking head, of the intercepting blocks, the diameter of the first screen plate is smaller than the inner diameter of the tube body, the first screen plate is in contact with the intercepting blocks, and the gauze is located on one side, away from the jacking head, of the first screen plate.
Through adopting above-mentioned technical scheme, when soil sample placed in detecting the bag, during evaporation of water to VOCs in the soil sample, and in getting into the body along with VOCs, when VOCs when first otter board and gauze, the gauze absorbs the moisture in the VOCs, moisture in reducing VOCs causes the possibility of influence to the life of detector body in getting into the detector body, through setting up interception piece and first otter board, reduce the gauze and remove the possibility that leads to blockking up the air inlet in the body.
Optionally, a pull rod is fixedly connected to the surface of the first screen plate far away from the jacking head, the length direction of the pull rod is arranged along the length direction of the pipe body, a second screen plate is inserted onto the pull rod in a sliding mode, the diameter of the second screen plate is smaller than the inner diameter of the pipe body, a compression spring is fixedly connected to the surface of the second screen plate far away from the first screen plate, and one end of the compression spring far away from the second screen plate is fixedly connected with one end of the pull rod far away from the first screen plate.
By adopting the technical scheme, the gauze is tightly pressed between the first screen plate and the second screen plate by the compression spring, the possibility of movement of the gauze in the pipe body is reduced, when the gauze needs to be replaced, the pull rod is held to pull in the direction away from the jacking head, the first screen plate is separated from the pipe body, then the first screen plate is fixed, the second screen plate is pulled in the direction away from the first screen plate, the compression spring is compressed when the second screen plate moves, at the moment, a gap exists between the second screen plate and the first screen plate, the old gauze can be taken out, the new gauze is placed between the first screen plate and the second screen plate, finally the second screen plate is loosened, the compression spring recovers deformation to drive the second screen plate to move in the direction close to the first screen plate until the second screen plate and the first screen plate are close to each other, and after the gauze is replaced, the pull rod is held and pushed to the inside of the pipe body, and the first interception is contacted with the screen plate block.
Optionally, a clamping ring is fixedly connected to the outer side wall of the pipe body, and the outer diameter of the clamping ring is larger than that of the pipe body.
Through adopting above-mentioned technical scheme, when gluing the head with body and filtration and pegging graft, the joint ring is kept away from the terminal surface of top head and is glued the head contact with the filtration, reduces the body and glues the inside possibility that takes place to remove of head to the filtration, avoids the air inlet to be located the filtration as far as possible and glues the head.
Optionally, the jacking head is arranged in a solid manner.
Through adopting above-mentioned technical scheme, reduce the possibility that the head takes place deformation in the in-process that the detection bag was punctured at the head that advances.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the jacking head, the pipe body and the air inlet are arranged, the jacking head punctures the detection bag, the sampling probe can move into the detection bag more conveniently, gas in the detection bag conveniently enters the gas detector through the sampling probe, the detection efficiency of the gas detector is improved, the air inlet of the sampling probe cannot be blocked, and the phenomenon that the gas detector alarms because the air inlet of the sampling probe is blocked is reduced;
2. by arranging the interception block, the first screen plate, the gauze and the gauze, the moisture in the VOCs is absorbed, and the possibility that the moisture of the VOCs enters the detector body to influence the service life of the detector body is reduced;
3. the pushing head is solid, so that the possibility of deformation of the pushing head in the process of puncturing the detection bag is reduced.
Drawings
FIG. 1 is a schematic diagram illustrating a positional relationship between a sampling probe and a gas detector according to an embodiment of the present disclosure.
Fig. 2 is an exploded view of a sampling probe and a gas detector according to an embodiment of the present disclosure.
FIG. 3 is a schematic diagram of an overall structure of a sampling probe according to an embodiment of the present application.
FIG. 4 is a cross-sectional view of the overall structure of a sampling probe embodying the embodiments of the present application.
FIG. 5 is a schematic diagram of the overall structure of a sampling probe embodied in other embodiments of the present application.
FIG. 6 is a schematic diagram of the overall structure of a sampling probe embodied in other embodiments of the present application.
Description of reference numerals: 1. a detector body; 2. detecting a probe; 3. filtering the rubber head; 4. pushing the head; 5. a tube body; 51. an air inlet; 52. an air outlet; 53. an intercepting block; 6. a snap ring; 7. a water absorbing component; 71. a first screen plate; 72. a pull rod; 73. a second screen plate; 74. a compression spring; 75. and (4) gauze.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses gas detector's sampling probe.
Example 1
Referring to fig. 1 and 2, the gas detector is installed on the gas detector, the gas detector includes a detector body 1, a detection probe 2 is connected to the detector body 1 through a thread, a filter rubber head 3 is sleeved on the top of the detection probe 2, the filter rubber head 3 includes a cylindrical shell which is horizontally arranged and a plug-in connector which is fixedly connected to two end walls of the cylindrical shell, and a sampling probe is plugged into the plug-in connector at one end of the filter rubber head 3 away from the detector body 1; the sampling probe comprises a jacking head 4 and a pipe body 5.
Referring to fig. 2 and 3, the pushing head 4 is conical, one end of the pushing head 4, which is far away from the detector body 1, is a tip, and the cross section of one end of the pushing head 4, which is close to the detector body 1, is circular. Referring to fig. 2 and 4, the ram 4 is solid, which reduces the possibility of deformation of the ram 4 during use. Body 5 and top head 4 coaxial line set up, and body 5 fixed connection is on top head 4 is close to the diapire of detector body 1, and body 5 is close to top head 4's one end and is the shutoff form, has seted up a plurality of air inlets 51 on the body 5, and the quantity of air inlet 51 is 1 in this embodiment.
Referring to fig. 1 and 4, one end of the tube body 5 close to the detector body 1 is provided with an air outlet 52, the outer side wall of the tube body 5 is fixedly connected with a clamping ring 6, and the clamping ring 6 is located at one end of the tube body 5 close to the filter rubber head 3. The one end that air inlet 51 was seted up to body 5 is pegged graft in filtering and is glued first 3, and joint ring 6 is close to the one end of detector body 1 and is filtered the bayonet joint of gluing first 3 one end of keeping away from detector body 1 and contact each other, reduces body 5 and continues to the inside possibility that takes place to remove of filtering gluey first 3.
When the concentration of VOCs in the detection bag needs to be measured, an operator holds the detector body 1 by hand, the jacking head 4 is aligned to the detection bag, then the detector body 1 is pushed towards the direction close to the detection bag, when the tip of the jacking head 4 is in contact with the detection bag, the detector body 1 is continuously pushed towards the direction close to the detection bag, the jacking head 4 punctures the detection bag, then the detector body 1 is continuously pushed towards the direction close to the detection bag, and the tube body 5 moves towards the detection bag along the punctured opening of the jacking head 4.
When the one end of keeping away from detector body 1 when joint ring 6 and detecting the bag and contact each other, stop promoting detector body 1, air inlet 51 was located and detects the bag this moment, and the interior VOCs of detecting the bag passes through air inlet 51 and gets into body 5 in, and the interior VOCs of body 5 is followed gas outlet 52, and in getting into detector body 1 behind filter rubber head 3 and test probe 2, detector body 1 detected VOCs's concentration. The sampling probe can puncture the detection bag more conveniently.
Soil sample in the detection bag when volatilizing VOCs, moisture in the soil sample also can evaporate to the VOCs in, when VOCs gets into body 5, moisture in the VOCs also can get into body 5, finally gets into detector body 1 along with VOCs, can corrode the mainboard in the detector body 1, influences the life of gas detection appearance. In order to solve the above problem, a water absorption assembly 7 for absorbing water vapor in VOCs is provided in the pipe body 5. The inner wall of the tube body 5 is fixedly connected with the two intercepting blocks 53, the two intercepting blocks 53 are both positioned at one end, far away from the jacking head 4, of the tube body 5, the intercepting blocks 53 are perpendicular to the tube wall of the tube body 5, the intercepting blocks 53 limit the water absorbing component 7, the possibility that the water absorbing component 7 moves towards the direction close to the air inlet 51 is reduced, and therefore the water absorbing component 7 is prevented from blocking the air inlet 51 as much as possible.
The water absorption assembly 7 comprises a first screen plate 71, the outer diameter of the first screen plate 71 is smaller than the inner diameter of the pipe body 5, a pull rod 72 is fixedly connected to the surface, away from the jacking head 4, of the first screen plate 71, a second screen plate 73 is sleeved on the pull rod 72, and the second screen plate 73 can slide along the length direction of the pull rod 72; the first net plate 71, the pull rod 72 and the second net plate 73 are coaxially arranged with the pipe body 5.
One end, far away from the first screen plate 71, of the pull rod 72 is fixedly connected with a baffle plate, a compression spring 74 is sleeved on the pull rod 72, the compression spring 74 is located on one side, far away from the first screen plate 71, of the second screen plate 73, one end of the compression spring 74 is fixedly connected with the second screen plate 73, the other end of the compression spring 74 is fixedly connected with the end face, close to the second screen plate 73, of the baffle plate, the first screen plate 71 is close to the second screen plate 73, gauze 75 is arranged between the first screen plate 71 and the second screen plate 73, and at the moment, the compression spring 74 is in a compression state.
When the detection is performed, the VOCs in the tube 5 enter the filter rubber head 3 along the first mesh plate 71, the gauze 75 and the second mesh plate 73, and meanwhile, the water vapor in the VOCs is absorbed by the gauze 75. When the gauze 75 needs to be replaced, firstly, the operator pulls the tube body 5 in a direction away from the filter rubber head 3 to separate the tube body 5 from the filter rubber head 3, and then holds the tube body 5 and pulls the pull rod 72 in a direction away from the jacking head 4 until the first net plate 71 is separated from the tube body 5.
The operator fixes the first screen plate 71 and then pulls the second screen plate 73 away from the first screen plate 71, and the second screen plate 73 compresses the compression spring 74 during the movement. When a gap exists between the second mesh plate 73 and the first mesh plate 71, the gauze 75 is placed between the first mesh plate 71 and the second mesh plate 73 from one side, so that the gauze 75 surrounds the pull rod 72, then the second mesh plate 73 is loosened, the compression spring 74 recovers deformation and drives the second mesh plate 73 to move towards the direction close to the first mesh plate 71, so that the second mesh plate 73 compresses the gauze 75, and the possibility that the gauze 75 slides in the tube 5 when the gauze 75 is positioned in the tube 5 is reduced.
After the gauze 75 is placed, the pull rod 72 is held and the pull rod 72 is pushed towards the interior of the tube body 5, the pull rod 72 moves to drive the first screen plate 71, the gauze 75, the second screen plate 73 and the compression spring 74 to move towards the interior of the tube body 5 until the first screen plate 71 and the interception block 53 are contacted with each other, at this time, one end of the pull rod 72, which is far away from the first screen plate 71, is exposed out of one end of the tube body 5, which is provided with the air outlet 52, and finally, the tube body 5 can be inserted on the filter glue head 3.
The implementation principle of the embodiment 1 is as follows: when measurement is needed, firstly, the gauze 75 is placed between the first screen plate 71 and the second screen plate 73, the pull rod 72 is pushed into the pipe body 5, the first screen plate 71 is in contact with the intercepting block 53, then the pipe body 5 is inserted into the filter rubber head 3, finally, the detector body 1 is held by a hand, the tip of the jacking head 4 is used for puncturing the detection bag, and meanwhile, the detector body 1 is continuously pushed, so that the air inlet 51 is positioned in the detection bag.
When the gauze 75 needs to be replaced, the tube body 5 is pulled out, the pull rod 72 is pulled outwards of the tube body 5, then the first mesh plate 71 and the second mesh plate 73 are separated, the old gauze 75 is taken out, then the new gauze 75 is placed between the first mesh plate 71 and the second mesh plate 73, finally the second mesh plate 73 is loosened, and the compression spring 74 recovers deformation to drive the second mesh plate 73 to move, so that the second mesh plate 73 compresses the gauze 75. Finally, the water absorption assembly 7 is installed into the pipe body 5.
Example 2
Referring to fig. 5, the present embodiment is different from embodiment 1 in that the number of the air inlets 51 may also be multiple, the aperture of the air inlet 51 is smaller than that of the air inlet 51 in embodiment 1, and the air inlet 51 is located between the ram 4 and the snap ring 6.
The implementation principle of the embodiment 2 is as follows: when the VOCs in the detection bag enter the tube body 5 through the air inlet 51, since the air inlet 51 is provided in plurality, the possibility that the air inlet 51 is blocked by floating dust in the VOCs to cause the gas detector to give an alarm is reduced.
Example 3
Referring to fig. 6, the present embodiment is different from embodiment 1 in that the outer diameter of the pipe body 5 is larger than the diameter of the bottom surface of the ram 4, the number of the air inlets 51 may be several, and the air inlets 51 are located on the end wall of the pipe body 5 near the ram 4.
The implementation principle of the embodiment 2 is as follows: when the VOCs in the detection bag enter the pipe body 5 through the air inlet 51, since the air inlet 51 is provided in plurality, the possibility that the air inlet 51 is completely blocked by the floating dust in the VOCs is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a sampling probe of gas detection appearance, its setting is on gas detection appearance, gas detection appearance includes detector body (1), and threaded connection has one test probe (2) on the top surface of detector body (1), and one end that detector body (1) were kept away from in test probe (2) has cup jointed one and has filtered gluey head (3), sampling probe pegs graft and glues the one end of keeping away from detector body (1) in the filtration, its characterized in that: the sampling probe comprises a jacking head (4), one end, far away from the detector body (1), of the jacking head (4) is a pointed end, the jacking head (4) is close to the surface fixedly connected with pipe body (5) of the detector body (1), at least one air inlet (51) is formed in the pipe body (5), and one end, far away from the jacking head (4), of the pipe body (5) is inserted into the filtering rubber head (3).
2. The sampling probe of the gas detector according to claim 1, wherein: the air inlet (51) is provided with one, and the air inlet (51) is arranged on the side wall of the pipe body (5).
3. The sampling probe of the gas detector according to claim 1, wherein: the air inlets (51) are arranged in a plurality of numbers, and the air inlets (51) are located on the side wall of the pipe body (5).
4. The sampling probe of the gas detector according to claim 1, wherein: the diameter of body (5) is greater than the diameter of top head (4) bottom surface, the one end that body (5) are close to top head (4) is the shutoff form, air inlet (51) set up on body (5) are close to the terminal surface of top head (4).
5. The sampling probe of the gas detector according to claim 1, wherein: be equipped with water absorption assembly (7) in body (5), water absorption assembly (7) include first otter board (71) and gauze (75).
6. The sampling probe of claim 5, wherein: fixedly connected with a plurality of interception piece (53) on the inside wall of body (5), interception piece (53) perpendicular to body's (5) lateral wall, first otter board (71) are located interception piece (53) and keep away from one side of top feed head (4), the diameter of first otter board (71) is less than the internal diameter of body (5), first otter board (71) with interception piece (53) contact each other, gauze (75) are located first otter board (71) are kept away from one side of top feed head (4).
7. The sampling probe of the gas detector according to claim 6, wherein: the surface of the first screen plate (71) far away from the jacking head (4) is fixedly connected with a pull rod (72), the length direction of the pull rod (72) is arranged along the length direction of the pipe body (5), a second screen plate (73) is connected to the pull rod (72) in a sliding and inserting mode, the diameter of the second screen plate (73) is smaller than the inner diameter of the pipe body (5), a compression spring (74) is fixedly connected to the surface of the second screen plate (73) far away from the first screen plate (71), and one end of the compression spring (74) far away from the second screen plate (73) is fixedly connected with one end of the pull rod (72) far away from the first screen plate (71).
8. The sampling probe of the gas detector according to claim 1, wherein: fixedly connected with joint ring (6) on the lateral wall of body (5), the external diameter of joint ring (6) is greater than the external diameter of body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122446091.XU CN217930981U (en) | 2021-10-11 | 2021-10-11 | Sampling probe of gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122446091.XU CN217930981U (en) | 2021-10-11 | 2021-10-11 | Sampling probe of gas detector |
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| Publication Number | Publication Date |
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| CN217930981U true CN217930981U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122446091.XU Active CN217930981U (en) | 2021-10-11 | 2021-10-11 | Sampling probe of gas detector |
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| CN (1) | CN217930981U (en) |
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- 2021-10-11 CN CN202122446091.XU patent/CN217930981U/en active Active
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Address after: 063000 No.99, Beixin West Road, Lubei District, Tangshan City, Hebei Province Patentee after: The fifth Geological Brigade of Hebei Bureau of Geology and mineral exploration and development (Hebei marine geological environment investigation center) Address before: 063000 No.99, Beixin West Road, Lubei District, Tangshan City, Hebei Province Patentee before: The fifth Geological Brigade of Hebei Bureau of Geology and mineral resources |