A seal pressure test detection device for fire hydrant and use method thereof

Abstract

The present invention discloses a sealing pressure test detection device for fire hydrants and a method of using the same, and belongs to the technical field of water pressure detection of fire hydrants. A sealing pressure test detection device for fire hydrants includes a bolt body, a connecting pipe is arranged on the bolt body, and also includes: a detection tube, a detector for detecting water pressure in the bolt body is arranged on the detection tube, and a rubber gasket that is movably abutted against the connecting pipe is arranged at the end of the detection tube; a threaded pipe, the threaded pipe is rotatably connected to the detection pipe, and the end of the threaded pipe away from the detection pipe is threadedly connected to the connecting pipe; and multiple sealing mechanisms; the present invention can increase the sealing between the detection pipe and the connecting pipe, avoid the situation where water flow infiltration is easy to occur at the joint of the pipe body, ensure the accuracy of the water pressure test, and stably fix the equipment as a whole and the fire hydrant to prevent shaking, so that the water pressure detection of the fire hydrant is more stable and accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of water pressure detection of fire hydrants, and in particular to a sealing pressure test detection device for fire hydrants and a use method thereof. Background Art

[0002] Fire hydrants are mainly used for fire trucks to take water from the municipal water supply network or outdoor fire water supply network for fire fighting. They can also be directly connected to water hoses and water guns to discharge water for fire fighting. Therefore, fire hydrants are also one of the important fire fighting facilities for fire fighting. Since fire hydrants rely on high-pressure water spraying to extinguish fires, insufficient pressure in fire hydrants will affect the rescue operation. After the fire hydrants are installed, they need to be pressure tested regularly to check whether the fire fighting equipment is operating normally.

[0003] During the assembly process of fire hydrant pipes and detection pipes, they are generally connected through threads. The tightness of the assembly has a significant impact on the measurement indicators. However, there are inevitably processing errors in the production process of the product, which makes it impossible to achieve absolute tightness. In addition, during the pressure test, when the water pressure is too high, the pipe body connected to the fire hydrant is prone to shaking, and the stability of the detection process cannot be maintained, thereby reducing the accuracy of the test results. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a sealing pressure test detection device for a fire hydrant and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A sealing pressure testing device for a fire hydrant, comprising a hydrant body, a connecting pipe being arranged on the hydrant body, and further comprising:

[0007] A detection tube, on which a detector for detecting the water pressure in the plug body is arranged, and an end of the detection tube is provided with a rubber gasket that movably abuts against the connecting tube;

[0008] A threaded pipe, the threaded pipe is rotatably connected to the detection pipe, and one end of the threaded pipe away from the detection pipe is threadedly connected to the connecting pipe;

[0009] A multiple sealing mechanism, the multiple sealing mechanism comprising an inner sealing component abutting against the inner wall of the connecting pipe and an outer sealing component abutting against the outer wall of the connecting pipe;

[0010] The detection tube is also provided with an anti-dropping component movably connected to the plug body, and the outer sealing component is connected with a limiting component for limiting the movement of the anti-dropping component.

[0011] Preferably, the inner sealing assembly includes a movable groove opened in the detection tube, the inner wall of the movable groove is rotatably connected with an internal gear ring fixed to the threaded tube, the inner wall of the movable groove is rotatably connected with an internal gear meshing with the internal gear ring, a first screw is slidably connected to the internal gear, the first screw is threadedly connected to the detection tube, a sealing rubber sleeve is provided at the end of the detection tube, a first inclined surface is opened on the inner wall of the sealing rubber sleeve, the end of the first screw is connected with an annular push block sliding in the sealing rubber sleeve, and the annular push block is movably abutted against the first inclined surface.

[0012] Preferably, the connecting pipe is placed between the threaded connecting pipe and the sealing rubber sleeve, the outer wall of the connecting pipe is threadedly connected to the inner wall of the threaded connecting pipe, and the inner wall of the connecting pipe is movably opposed to the outer wall of the sealing rubber sleeve.

[0013] Preferably, the external sealing assembly includes a connecting plate fixedly connected to the detection tube, an external gear is rotatably connected to the connecting plate, an external gear ring meshing with the external gear is fixedly provided on the outside of the threaded connecting pipe, a second screw rod slidably connected to the external gear is threadedly connected to the connecting plate, one end of the second screw rod is connected to an annular outer shell, a sealing ring is fixedly provided on the outside of the threaded connecting pipe, and the end of the sealing ring is provided with a second inclined surface that movably abuts against the annular outer shell.

[0014] Preferably, guide strips are fixedly disposed on the inner side walls of the internal gear and the external gear, and guide grooves cooperating with the guide strips are formed along the axial direction of the first screw and the second screw.

[0015] Preferably, the anti-falling assembly includes a support plate fixed on the detection tube, a first elastic telescopic rod is fixed on the support plate, an end of the first elastic telescopic rod away from the support plate is connected to a connecting rod, and the end of the connecting rod is connected to an arc plate that is movably opposed to the bolt body.

[0016] Preferably, the limiting assembly includes an L-shaped plate slidably connected to the connecting plate, a second elastic telescopic rod is arranged between the L-shaped plate and the connecting plate, an extrusion slope is provided at one end of the L-shaped plate, a push seat that movably abuts against the extrusion slope is provided on the annular shell, an insertion rod is fixed on the L-shaped plate, and the telescopic rod of the first elastic telescopic rod is provided with a socket matching the insertion rod along its axial direction.

[0017] Preferably, the insertion rod is provided in plurality and each of the plurality of insertion rods is a two-section retractable rod connected by a spring, the plurality of insertion rods are arranged on an L-shaped plate at unequal intervals, and the telescopic rod ends of the insertion rods are provided with a third inclined surface.

[0018] Preferably, the outer side of the threaded connecting pipe is provided with anti-slip grooves which are evenly distributed in a circumference and parallel to its central axis, and one end of the detection tube away from the threaded connecting pipe is connected to a water tank.

[0019] The present invention also discloses a method for using a sealing pressure testing device for a fire hydrant, comprising the following steps:

[0020] S1: When working, the arc plate is put on the outside of the bolt body from top to bottom, and the arc plate and the detection tube are placed on both sides of the bolt body respectively. Then the detection tube and the connecting tube are connected, and the threaded tube is screwed on the outside of the connecting tube by rotating the threaded tube. During this period, the threaded tube and the detection tube rotate relatively.

[0021] S2: When the threaded pipe rotates, the internal gear ring is driven to rotate, the internal gear ring is meshed with the internal gear for transmission, the internal gear drives the first screw to rotate, the first screw moves relative to the detection tube, the first screw drives the annular push block to squeeze the first inclined surface of the inner wall of the sealing rubber sleeve, and the sealing rubber sleeve is forced to fit to the inner wall of the connecting pipe;

[0022] When the threaded pipe rotates, the outer gear ring is driven to rotate, and the outer gear ring is meshed with the outer gear for transmission, and the outer gear drives the second screw to rotate, and the second screw drives the annular shell to move, so that the annular shell squeezes the second inclined surface of the sealing ring, and the sealing ring is forced to fit the outer wall of the connecting pipe, and when the annular shell moves, the pushing seat applies a thrust to the extruded inclined surface of the L-shaped plate, and the second elastic telescopic rod is stretched, so that the L-shaped plate drives a plurality of plug rods to approach the first elastic telescopic rod;

[0023] S3: As the threaded pipe continues to rotate, the threaded pipe drives the detection tube to approach the bolt body. During this period, the first elastic telescopic rod automatically contracts, the first elastic telescopic rod pushes the third inclined surface of the insertion rod, and the insertion rod contracts to avoid the movement of the telescopic rod of the first elastic telescopic rod;

[0024] As the threaded pipe continues to rotate, the threaded pipe drives the rubber gasket at the end of the detection pipe to abut against the end surface of the connecting pipe, completing the docking work between the detection pipe and the connecting pipe. At this time, the insertion rod is inserted into the insertion hole to limit the length of the first elastic telescopic rod, so that the detection pipe is stably installed on the bolt body in coordination with the arc plate.

[0025] S4: The plug is then controlled to spray water through the connecting pipe, and the detector detects the water flow passing through the detection tube. The water flowing through the detection tube is finally collected by the water storage tank.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The sealing pressure test detection device for fire hydrants and the use method thereof, when the threaded connecting pipe is connected to the connecting pipe thread, the multiple sealing mechanisms automatically work, so that the inner wall and the outer wall of the fire hydrant connecting pipe are respectively abutted, which can increase the sealing between the detection pipe and the connecting pipe, avoid the situation where water flow infiltration is easy to occur at the joint of the pipe body, and ensure the accuracy of the water pressure test.

[0028] 2. The sealing pressure test detection device for fire hydrants and the method of using the same drive the limit assembly to lock the anti-drop assembly when the multiple sealing mechanisms are working, so that the detection tube can be stably installed on the hydrant body in conjunction with the arc plate, and the detection device as a whole and the fire hydrant are stably fixed to prevent shaking, making the water pressure detection of the fire hydrant more stable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0030] Figure 2 For the present invention Figure 1 A partial enlarged structural diagram of the middle part;

[0031] Figure 3 The structure of the present invention is schematically shown Figure 2 ;

[0032] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0033] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure of the middle B part;

[0034] Figure 6 For the present invention Figure 4 A schematic diagram of the partially enlarged structure of the middle C part;

[0035] Figure 7 It is a structural schematic diagram of the multiple sealing mechanism of the present invention;

[0036] Figure 8 It is a partial structural schematic diagram of the detection tube of the present invention;

[0037] Fig. 9 It is a schematic diagram of the cross-sectional structure of the detection tube of the present invention;

[0038] Fig.10 It is a schematic diagram of the cross-sectional structure of the threaded pipe of the present invention;

[0039] Fig.11 It is a schematic structural diagram of the first screw of the present invention.

[0040] In the figure: 1, bolt body; 101, connecting pipe; 2, detection tube; 201, rubber gasket; 3, detector; 4, threaded pipe; 401, inner gear ring; 402, outer gear ring; 403, anti-slip pattern; 5, movable groove; 501, inner gear; 502, first screw rod; 503, annular push block; 6, sealing rubber sleeve; 601, first inclined surface; 7, connecting plate; 701, outer gear; 702, second screw rod; 703, annular shell; 7031, push seat; 8, sealing ring; 801, second inclined surface; 9, guide strip; 901, guide groove; 10, support plate; 11, first elastic telescopic rod; 111, jack; 12, connecting rod; 121, arc plate; 13, L-shaped plate; 131, second elastic telescopic rod; 132, plug rod; 14, water tank. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 A sealing pressure testing device for a fire hydrant comprises a hydrant body 1, a connecting pipe 101 is arranged on the hydrant body 1, and further comprises:

[0044] A detection tube 2, on which a detector 3 for detecting the water pressure in the plug body 1 is disposed, and at the end of the detection tube 2 a rubber gasket 201 is disposed for movably contacting with the connecting tube 101;

[0045] A threaded pipe 4, the threaded pipe 4 is rotatably connected to the detection pipe 2, and one end of the threaded pipe 4 away from the detection pipe 2 is threadedly connected to the connecting pipe 101;

[0046] A multiple sealing mechanism, the multiple sealing mechanism includes an inner sealing component abutting against the inner wall of the connecting pipe 101 and an outer sealing component abutting against the outer wall of the connecting pipe 101;

[0047] The detection tube 2 is also provided with an anti-dropping component movably connected to the plug body 1 , and the outer sealing component is connected with a limiting component for limiting the movement of the anti-dropping component.

[0048] Specifically, when working, the anti-falling component is first put on the bolt body 1, and then the detection tube 2 and the connecting tube 101 are connected. By rotating the threaded connecting tube 4, the threaded connecting tube 4 is screwed on the outside of the connecting tube 101. During this period, the threaded connecting tube 4 and the detection tube 2 rotate relatively, and the multiple sealing mechanisms work automatically to abut the inner wall and the outer wall of the fire hydrant connecting tube 101 respectively, which can increase the sealing between the detection tube 2 and the connecting tube 101, avoid the situation where water flow infiltration is easy to occur at the joint of the pipe body, and ensure the accuracy of the water pressure test. When the connecting tube 101 is connected to the detection tube 2, the rubber gasket 201 seals the joint between the connecting tube 101 and the detection tube 2, and the multiple sealing mechanisms drive the limit assembly to lock the anti-falling component when working. The anti-falling component stably installs the detection tube 2 on the bolt body 1, stably fixes the detection device as a whole and the fire hydrant to prevent shaking, making it more stable and accurate for the water pressure detection of the fire hydrant.

[0049] Example 2: Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 , a sealing pressure test detection device for a fire hydrant, based on Example 1, further, an inner sealing component includes a movable groove 5 opened in the detection tube 2, the inner wall of the movable groove 5 is rotatably connected with an inner gear ring 401 fixedly connected to the threaded pipe 4, the inner wall of the movable groove 5 is rotatably connected with an internal gear 501 meshing with the inner gear ring 401, a first screw 502 is slidably connected to the internal gear 501, the first screw 502 is threadedly connected to the detection tube 2, a sealing rubber sleeve 6 is provided at the end of the detection tube 2, a first inclined surface 601 is provided on the inner wall of the sealing rubber sleeve 6, and an annular push block 503 sliding in the sealing rubber sleeve 6 is connected to the end of the first screw 502, and the annular push block 503 and the first inclined surface 601 are movably abutted against each other.

[0050] Furthermore, the connecting pipe 101 is placed between the threaded connecting pipe 4 and the sealing rubber sleeve 6 , the outer wall of the connecting pipe 101 is threadedly connected to the inner wall of the threaded connecting pipe 4 , and the inner wall of the connecting pipe 101 is movably opposed to the outer wall of the sealing rubber sleeve 6 .

[0051] Specifically, the threaded connecting pipe 4 is rotated so that the threaded connecting pipe 4 is screwed onto the outside of the connecting pipe 101. During this period, the threaded connecting pipe 4 and the detection tube 2 rotate relative to each other. When the threaded connecting pipe 4 rotates, the inner gear ring 401 is driven to rotate. The inner gear ring 401 is meshed with the inner gear 501 for transmission. The inner gear 501 drives the first screw 502 to rotate. The first screw 502 moves relative to the detection tube 2. The first screw 502 drives the annular push block 503 to squeeze the first inclined surface 601 of the inner wall of the sealing rubber sleeve 6. The sealing rubber sleeve 6 is forced to fit against the inner wall of the connecting pipe 101, thereby improving the sealing of the connection between the detection tube 2 and the connecting pipe 101.

[0052] Example 3: Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 , a sealing pressure test detection device for a fire hydrant, based on Example 2, further, an outer sealing component includes a connecting plate 7 fixedly connected to the detection tube 2, an external gear 701 is rotatably connected to the connecting plate 7, an external gear ring 402 meshing with the external gear 701 is fixedly provided on the outer side of the threaded pipe 4, a second screw 702 slidably connected to the external gear 701 is threadedly connected to the connecting plate 7, one end of the second screw 702 is connected to an annular shell 703, a sealing ring 8 is fixedly provided on the outer side of the threaded pipe 4, and a second inclined surface 801 that is movably abutted against the annular shell 703 is provided at the end of the sealing ring 8.

[0053] Furthermore, guide strips 9 are fixedly disposed on the inner side walls of the inner gear 501 and the outer gear 701 , and guide grooves 901 cooperating with the guide strips 9 are formed along the axial direction of the first screw rod 502 and the second screw rod 702 .

[0054] Specifically, the threaded connecting pipe 4 is rotated so that the threaded connecting pipe 4 is screwed onto the outside of the connecting pipe 101. During this period, the threaded connecting pipe 4 and the detection tube 2 rotate relative to each other. When the threaded connecting pipe 4 rotates, the outer gear ring 402 is driven to rotate. The outer gear ring 402 is meshed with the outer gear 701 for transmission. The outer gear 701 drives the second screw 702 to rotate. The second screw 702 drives the annular shell 703 to move, so that the annular shell 703 squeezes the second inclined surface 801 of the sealing ring 8. The sealing ring 8 is forced to fit against the outer wall of the connecting pipe 101, thereby further improving the sealing performance of the connection between the detection tube 2 and the connecting pipe 101.

[0055] Example 4: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7, a sealing pressure test detection device for a fire hydrant. On the basis of Example 3, further, the anti-falling component includes a support plate 10 fixedly mounted on the detection tube 2, and a first elastic telescopic rod 11 is fixedly mounted on the support plate 10. The end of the first elastic telescopic rod 11 away from the support plate 10 is connected to a connecting rod 12, and the end of the connecting rod 12 is connected to an arc plate 121 that is movably opposed to the bolt body 1.

[0056] Furthermore, the limiting assembly includes an L-shaped plate 13 slidably connected to the connecting plate 7, a second elastic telescopic rod 131 is arranged between the L-shaped plate 13 and the connecting plate 7, an extrusion slope is provided at one end of the L-shaped plate 13, a push seat 7031 that is movably opposed to the extrusion slope is provided on the annular shell 703, an insertion rod 132 is fixed on the L-shaped plate 13, and the telescopic rod of the first elastic telescopic rod 11 is provided with a socket 111 along its axial direction that cooperates with the insertion rod 132.

[0057] Furthermore, the insertion rod 132 is configured as a plurality of two-section retractable rods connected by springs. The plurality of insertion rods 132 are unequally spaced on the L-shaped plate 13 , and the retractable rod ends of the insertion rods 132 are provided with a third inclined surface.

[0058] Specifically, when the threaded pipe 4 rotates, it drives the outer gear ring 402 to rotate, and the outer gear ring 402 meshes with the outer gear 701 for transmission. The outer gear 701 drives the second screw rod 702 to rotate, and the second screw rod 702 drives the annular shell 703 to move. When the annular shell 703 moves, a thrust is applied to the extrusion inclined surface of the L-shaped plate 13 through the push seat 7031, and the second elastic telescopic rod 131 is stretched, so that the L-shaped plate 13 drives a plurality of plug rods 132 to approach the first elastic telescopic rod 11. As the threaded pipe 4 continues to rotate, the threaded pipe 4 drives the detection tube 2 to approach the bolt body 1. During this period, the first elastic telescopic rod 11 automatically contracts, and the first elastic telescopic rod 11 pushes the third inclined surface of the plug rod 132. The plug rod 132 contracts and avoids the telescopic rod movement of the first elastic telescopic rod 11. As the threaded pipe 4 continues to rotate, the threaded pipe 4 drives the detection tube 2 to approach the bolt body 1. During this period, the first elastic telescopic rod 11 automatically contracts, and the first elastic telescopic rod 11 pushes the third inclined surface of the plug rod 132. The plug rod 132 contracts and avoids the telescopic rod movement of the first elastic telescopic rod 11. The connecting pipe 4 drives the rubber gasket 201 at the end of the detection tube 2 to abut against the end face of the connecting pipe 101, completing the docking of the detection tube 2 and the connecting tube 101, and at this time, the plug rod 132 is inserted into the socket 111, limiting the length of the first elastic telescopic rod 11, so that the detection tube 2 can be stably installed on the bolt body 1 in cooperation with the arc plate 121; it should be noted that by arranging multiple plug rods 132 at unequal intervals on the L-shaped plate 13, so that during the contraction of the first elastic telescopic rod 11, there is always at least one plug rod 132 docked with the socket 111, thereby improving practicality, and when it is necessary to release the restriction of the limit assembly on the anti-falling assembly, the plug rod 132 inserted in the socket 111 can be pressed down to move the plug rod 132 out of the socket 111, and in actual use, the telescopic end of the plug rod 132 can be provided with a pressing piece for easy pressing down.

[0059] Example 5: Reference Figure 1 and Figure 3 A sealing pressure test device for a fire hydrant. Based on Example 4, further, the outer side of the threaded connecting pipe 4 is provided with anti-slip grooves 403 which are evenly distributed in a circle and parallel to its central axis, and the end of the detection tube 2 away from the threaded connecting pipe 4 is connected to a water tank 14.

[0060] Specifically, anti-slip grooves 403 are provided on the outside of the threaded pipe 4 to facilitate the staff to drive the threaded pipe 4 to rotate, and a water storage tank 14 is provided at the end of the detection tube 2 to facilitate the storage of water flowing out of the plug body 1 for detection, thereby avoiding waste of water resources.

[0061] The present invention also discloses a method for using a sealing pressure testing device for a fire hydrant, comprising the following steps:

[0062] S1: When working, the arc plate 121 is sleeved on the outside of the bolt body 1 from top to bottom, and the arc plate 121 and the detection tube 2 are respectively placed on both sides of the bolt body 1, and then the detection tube 2 and the connecting tube 101 are connected, and the threaded connecting tube 4 is rotated to make the threaded connecting tube 4 screwed on the outside of the connecting tube 101. During this period, the threaded connecting tube 4 and the detection tube 2 rotate relatively;

[0063] S2: When the threaded pipe 4 rotates, the inner gear ring 401 is driven to rotate, and the inner gear ring 401 is meshed with the inner gear 501 for transmission, and the inner gear 501 drives the first screw 502 to rotate, and the first screw 502 moves relative to the detection tube 2, and the first screw 502 drives the annular push block 503 to squeeze the first inclined surface 601 of the inner wall of the sealing rubber sleeve 6, and the sealing rubber sleeve 6 is forced to fit the inner wall of the connecting pipe 101;

[0064] When the threaded pipe 4 rotates, the outer gear ring 402 is driven to rotate, and the outer gear ring 402 is meshed with the outer gear 701 for transmission, and the outer gear 701 drives the second screw 702 to rotate, and the second screw 702 drives the annular shell 703 to move, so that the annular shell 703 squeezes the second inclined surface 801 of the sealing ring 8, and the sealing ring 8 is forced to fit the outer wall of the connecting pipe 101, and when the annular shell 703 moves, the pushing seat 7031 applies a thrust to the extrusion inclined surface of the L-shaped plate 13, and the second elastic telescopic rod 131 is stretched, so that the L-shaped plate 13 drives a plurality of plug rods 132 to approach the first elastic telescopic rod 11;

[0065] S3: As the threaded tube 4 continues to rotate, the threaded tube 4 drives the detection tube 2 to approach the bolt body 1. During this period, the first elastic telescopic rod 11 automatically contracts, and the first elastic telescopic rod 11 pushes the third inclined surface of the insertion rod 132. The insertion rod 132 contracts to avoid the movement of the telescopic rod of the first elastic telescopic rod 11.

[0066] As the threaded pipe 4 continues to rotate, the threaded pipe 4 drives the rubber gasket 201 at the end of the detection tube 2 to abut against the end surface of the connecting pipe 101, completing the docking work between the detection tube 2 and the connecting pipe 101. At this time, the insertion rod 132 is inserted into the insertion hole 111 to limit the length of the first elastic telescopic rod 11, so that the detection tube 2 is stably installed on the bolt body 1 in cooperation with the arc plate 121.

[0067] S4: Then the plug body 1 is controlled to spray water through the connecting pipe 101 , and the detector 3 detects the water flow passing through the detection tube 2 . The water flowing through the detection tube 2 is finally collected by the water storage tank 14 .

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing pressure testing device for a fire hydrant, comprising a hydrant body (1), wherein a connecting pipe (101) is arranged on the hydrant body (1), characterized in that: Also includes: A detection tube (2), wherein a detector (3) for detecting the water pressure in the plug body (1) is provided on the detection tube (2), and a rubber gasket (201) movably abutting against the connecting tube (101) is provided at the end of the detection tube (2); A threaded pipe (4), the threaded pipe (4) being rotatably connected to the detection pipe (2), and one end of the threaded pipe (4) away from the detection pipe (2) being threadably connected to the connecting pipe (101); A multiple sealing mechanism, the multiple sealing mechanism comprising an inner sealing component abutting against the inner wall of the connecting pipe (101) and an outer sealing component abutting against the outer wall of the connecting pipe (101); The detection tube (2) is also provided with an anti-dropping component movably connected to the plug body (1), and the outer sealing component is connected with a limiter component for limiting the movement of the anti-dropping component; The inner sealing component comprises a movable groove (5) provided in the detection tube (2); the inner wall of the movable groove (5) is rotatably connected to an inner toothed ring (401) fixedly connected to the threaded connecting pipe (4); the inner wall of the movable groove (5) is rotatably connected to an inner gear (501) meshing with the inner toothed ring (401); a first screw rod (502) is slidably connected to the inner gear rod (501); the first screw rod (502) is threadedly connected to the detection tube (2); a sealing rubber sleeve (6) is provided at the end of the detection tube (2); a first inclined surface (601) is provided on the inner wall of the sealing rubber sleeve (6); the end of the first screw rod (502) is connected to an annular push block (503) sliding in the sealing rubber sleeve (6); the annular push block (503) movably abuts against the first inclined surface (601).

2. A seal pressure test detection device for a fire hydrant according to claim 1, characterized in that: The connecting pipe (101) is disposed between the threaded connecting pipe (4) and the sealing rubber sleeve (6); the outer wall of the connecting pipe (101) is threadably connected to the inner wall of the threaded connecting pipe (4); and the inner wall of the connecting pipe (101) is movably opposed to the outer wall of the sealing rubber sleeve (6).

3. A seal pressure test detection device for fire hydrants according to claim 2, characterized in that: The outer sealing component comprises a connecting plate (7) fixedly connected to the detection tube (2), an external gear (701) being rotatably connected to the connecting plate (7), an external gear ring (402) meshing with the external gear (701) being fixedly provided on the outer side of the threaded connecting pipe (4), a second screw rod (702) being slidably connected to the external gear (701) being threadedly connected to the connecting plate (7), one end of the second screw rod (702) being connected to an annular outer shell (703), a sealing ring (8) being fixedly provided on the outer side of the threaded connecting pipe (4), and an end of the sealing ring (8) being provided with a second inclined surface (801) movably abutting against the annular outer shell (703).

4. A seal pressure test detection device for fire hydrants according to claim 3, characterized in that: The inner side walls of the internal gear (501) and the outer gear (701) are both fixedly provided with guide strips (9), and the first screw rod (502) and the second screw rod (702) are both provided with guide grooves (901) along their axial directions that match the guide strips (9).

5. A seal pressure test detection device for fire hydrants according to claim 4, characterized in that: The anti-falling assembly comprises a support plate (10) fixedly mounted on the detection tube (2), a first elastic telescopic rod (11) fixedly mounted on the support plate (10), an end of the first elastic telescopic rod (11) away from the support plate (10) being connected to a connecting rod (12), and an end of the connecting rod (12) being connected to an arc-shaped plate (121) movably abutting against the bolt body (1).

6. A seal pressure test detection device for fire hydrants according to claim 5, characterized in that: The limiting assembly comprises an L-shaped plate (13) slidably connected to the connecting plate (7); a second elastic telescopic rod (131) is arranged between the L-shaped plate (13) and the connecting plate (7); an extrusion inclined surface is provided at one end of the L-shaped plate (13); a push seat (7031) movably abutting against the extrusion inclined surface is provided on the annular housing (703); an insertion rod (132) is fixedly provided on the L-shaped plate (13); and a plug hole (111) matching the insertion rod (132) is provided on the telescopic rod of the first elastic telescopic rod (11) along its axial direction.

7. A seal pressure test device for fire hydrants according to claim 6, characterized in that: The insertion rods (132) are arranged as a plurality of two-section retractable rod bodies connected by a spring, the plurality of insertion rods (132) are arranged on the L-shaped plate (13) at unequal intervals, and the retractable rod ends of the insertion rods (132) are provided with a third inclined surface.

8. A seal pressure test device for fire hydrants according to claim 7, characterized in that: The outer side of the threaded connecting pipe (4) is provided with anti-slip grooves (403) which are evenly distributed in a circumference and parallel to the central axis thereof, and one end of the detection tube (2) away from the threaded connecting pipe (4) is connected to a water storage tank (14).

9. The method for using the sealing pressure testing device for fire hydrants according to claim 8 is characterized in that: The following steps are involved: S1: When working, the arc plate (121) is sleeved on the outside of the bolt body (1) from top to bottom, and the arc plate (121) and the detection tube (2) are respectively placed on both sides of the bolt body (1), and then the detection tube (2) and the connecting tube (101) are connected, and the threaded connecting tube (4) is rotated so that the threaded connecting tube (4) is screwed on the outside of the connecting tube (101). During this period, the threaded connecting tube (4) and the detection tube (2) rotate relative to each other; S2: When the threaded pipe (4) rotates, the internal gear ring (401) is driven to rotate, and the internal gear ring (401) is meshed with the internal gear (501) for transmission. The internal gear (501) drives the first screw (502) to rotate, and the first screw (502) moves relative to the detection tube (2). The first screw (502) drives the annular push block (503) to squeeze the first inclined surface (601) of the inner wall of the sealing rubber sleeve (6), and the sealing rubber sleeve (6) is forced to fit against the inner wall of the connecting pipe (101); When the threaded pipe (4) rotates, the outer gear ring (402) is driven to rotate, and the outer gear ring (402) is meshed with the outer gear (701) for transmission. The outer gear (701) drives the second screw rod (702) to rotate, and the second screw rod (702) drives the annular housing (703) to move, so that the annular housing (703) squeezes the second inclined surface (801) of the sealing ring (8), and the sealing ring (8) is forced to fit against the outer wall of the connecting pipe (101). When the annular housing (703) moves, a thrust is applied to the extrusion inclined surface of the L-shaped plate (13) through the push seat (7031), and the second elastic telescopic rod (131) is stretched, so that the L-shaped plate (13) drives the plurality of insertion rods (132) to approach the first elastic telescopic rod (11); S3: As the threaded connecting pipe (4) continues to rotate, the threaded connecting pipe (4) drives the detection tube (2) to approach the bolt body (1). During this period, the first elastic telescopic rod (11) automatically contracts, the first elastic telescopic rod (11) pushes the third inclined surface of the insertion rod (132), and the insertion rod (132) contracts to avoid the movement of the telescopic rod of the first elastic telescopic rod (11); As the threaded connecting pipe (4) continues to rotate, the threaded connecting pipe (4) drives the rubber gasket (201) at the end of the detection tube (2) to abut against the end surface of the connecting pipe (101), thereby completing the docking work of the detection tube (2) and the connecting pipe (101). At this time, the insertion rod (132) is inserted into the insertion hole (111), limiting the length of the first elastic telescopic rod (11), so that the detection tube (2) cooperates with the arc plate (121) to be stably installed on the bolt body (1); S4: The plug body (1) is then controlled to spray water through the connecting pipe (101), and the detector (3) detects the water flowing through the detection tube (2). The water flowing through the detection tube (2) is finally collected by the water storage tank (14).

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