Portable pipe fitting air tightness detection device

Abstract

The utility model discloses a portable pipe and pipe fitting air tightness detection device, which comprises a main body assembly, a frame body, an air tightness detector, a connecting pipe, a high-pressure hose, a driving piece, a mounting piece, a transmission piece, a limiting piece and a connecting piece, and is characterized in that the air tightness detector is mounted on the inner wall of the frame body; the pipeline airtightness detection device has the advantages that the main body assembly is arranged so that a pipeline can be conveniently clamped, the dismounting assembly is arranged so that a clamping ring for clamping the pipeline can be conveniently dismounted, and the pipeline airtightness detection device is simple in structure, convenient to use and high in practicability. The clamping ring convenient to disassemble enables the to-be-detected pipe fitting to be replaced quickly and simply, so that the detection period is shortened, the overall detection efficiency is improved, the clamping ring easy to disassemble facilitates regular cleaning and maintenance, and performance reduction and damage risks caused by accumulation of dirt and impurities are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline detection technical field, especially a portable pipe material pipe spare air tightness detection device. BACKGROUND

[0002] The main role of pipe material pipe spare air tightness detection is to ensure the air tightness of the product, prevent leakage in the use process, thereby meet the design requirement, usually through the sample both ends are blocked, inject the gas of specified pressure and monitor its pressure change, if the goods exist the air leakage phenomenon, the injected gas will lose constantly, lead to the pressure drop, through the measuring instrument can detect the size of pressure change, thereby judge the air tightness of sample, at present, the air tightness generally adopts the air tightness testing machine to test, and the equipment price is high, the volume is big, the consumable is expensive, and the use is inconvenient, and the maintenance cost is high, and the traditional clamping ring design can include multiple closely connected components, these components can be connected through threads, pins or other fastening ways, the complex design makes the disassembly process tedious, needs to spend a lot of time and energy, and the clamping ring is not easy to disassemble, and the clamping ring is not easy to disassemble will lead to the time of replacing the pipe spare of being detected or the device maintenance is long, thereby reduce the detection efficiency, due to the inconvenient disassembly, the dirt and impurities on the clamping ring can be difficult to remove, and the long-term accumulation can affect the clamping effect and device performance. SUMMARY

[0003] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above and / or existing problems in the portable pipe material pipe spare air tightness detection device, the utility model is proposed.

[0005] Therefore, the problem to be solved by the utility model is that the clamping ring for clamping the pipeline is not convenient to disassemble in the prior art.

[0006] To solve the above technical problems, the utility model provides technical scheme as follows: A portable pipe and pipe fitting air tightness detection device, its main component, including frame body, air tightness detector, connecting pipe, high pressure hose, driving piece, mounting piece, transmission part, limiting piece, connecting piece, base, pump body, hand pressure rod, pressure gauge, filter screen, switch valve, pressure relief valve, stop valve, air pressure fine adjustment pump, fine adjustment rotating rod, air pressure output port and standard style interface, the air tightness detector is installed in the inner wall of the frame body, one end of the connecting pipe is communicated with the air tightness detector, the high pressure hose is arranged on the top of the frame body, the driving piece is arranged in the inner chamber of the frame body, the mounting piece is arranged in the inner chamber of the frame body, the transmission part is arranged on one side of the driving piece, the limiting piece is arranged in the inner chamber of the frame body, the connecting piece is arranged on one side of the mounting piece, the base is fixed on the top of the frame body, the pump body is installed on the top of the base, the hand pressure rod is arranged on one side of the pump body, the pressure gauge is arranged on the top of the base, the filter screen is installed in the inner chamber of the base, the switch valve is communicated with the inner wall of the pump body, the pressure relief valve is communicated with the inner wall of the base, the stop valve is communicated with the inner wall of the pump body, the air pressure fine adjustment pump is arranged on the top of the base, the fine adjustment rotating rod is arranged on the top of the air pressure fine adjustment pump, the air pressure output port is communicated with the inner wall of the base, the standard style interface is installed on one end of the high pressure hose, and the dismounting assembly is arranged below the main component and includes clamping ring, connecting block, connecting rod, sleeve rod, sliding rod, moving block, clamping block, slot and clamping piece, the clamping ring is arranged in the inner chamber of the frame body, the connecting block is arranged below the clamping ring, the connecting rod is fixed on the bottom of the connecting block, the sleeve rod is fixed on the inner wall of the connecting block, the sliding rod is slid on the inner wall of the sleeve rod, the moving block is fixed on the top of the sliding rod, the clamping block is fixed on one side of the moving block, the slot is opened on the inner wall of the clamping ring, and the clamping piece is arranged in the inner chamber of the connecting block.

[0007] As a preferred scheme of the portable pipe and pipe fitting air tightness detection device, the driving piece includes motor and rotating rod, the motor is fixed on the inner wall of the frame body, and the rotating rod is fixed on the output end of the motor.

[0008] As a preferred scheme of the portable pipe and pipe fitting air tightness detection device, the mounting piece further includes fixing frame and mounting column, the fixing frame is fixed on the inner wall of the frame body, and the mounting column is fixed on the inner wall of the fixing frame.

[0009] As an improved scheme of the utility model discloses portable pipe gas tightness detection device, wherein: the mounting piece includes the moving plate and the positioning frame, the moving plate slides on the outside of the mounting column, the positioning frame is connected on one side of the moving plate.

[0010] As an improved scheme of the utility model discloses portable pipe gas tightness detection device, wherein: the transmission piece includes the gear and the toothed plate, the gear is fixed on the outside of the rotating lever, the toothed plate is engaged on the outside of the gear, and one side of the toothed plate is fixedly connected with the inner wall of the positioning frame.

[0011] As an improved scheme of the utility model discloses portable pipe gas tightness detection device, wherein: the limiting piece includes the sliding column and the limiting groove, the sliding column is fixed on the inner wall of the frame body, and the limiting groove is formed in the inner wall of the frame body.

[0012] As an improved scheme of the utility model discloses portable pipe gas tightness detection device, wherein: the connecting piece includes the first connecting plate and the second connecting plate, the first connecting plate is fixed on one side of the moving plate, and the second connecting plate is fixed on one side of the moving plate.

[0013] As an improved scheme of the utility model discloses portable pipe gas tightness detection device, wherein: the connecting piece further includes the lifting plate, the lifting plate is fixed on one side of the first connecting plate, and one side of the lifting plate is fixedly connected with one side of the second connecting plate.

[0014] As an improved scheme of the utility model discloses portable pipe gas tightness detection device, wherein: the connecting piece further includes the lifting plate, the lifting plate is fixed on one side of the first connecting plate, and one side of the lifting plate is fixedly connected with one side of the second connecting plate.

[0015] As an improved scheme of the utility model discloses portable pipe gas tightness detection device, wherein: the connecting piece further includes the lifting plate, the lifting plate is fixed on one side of the first connecting plate, and one side of the lifting plate is fixedly connected with one side of the second connecting plate.

[0016] The utility model discloses beneficial effect is: through setting up main part assembly can be convenient for to pipe clamping, through setting up dismantling subassembly can be convenient for to the clamping ring of clamping pipe dismantling, the clamping ring of easy dismantling makes the replacement measured pipe fitting become quick and simple, thereby shorten the detection period, improve the whole detection efficiency, easy to dismantle's clamping ring is convenient for the regular cleaning and maintenance, reduce the performance decline and damage risk caused by dirt and impurity accumulation, simultaneously, this air tightness detection device can switch to negative pressure mode in addition to pipe material pipe fitting air tightness detection, detects the negative pressure performance of pipe fitting, also can cooperate with the universal material testing machine and carry out pipe fitting drawing test, realize one machine three uses, and this air tightness detection device is low in cost, small in size, portable and easy to carry, can realize on -the -spot inspection. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the drawing needed in the embodiment description used briefly introduce, obviously, the following description in the drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor intensity, can also obtain other drawings according to these drawings. Wherein:

[0018] Figure 1 It is the overall structural drawing of portable pipe material pipe fitting air tightness detection device.

[0019] Figure 2 It is the frame body and air tightness detection instrument structure diagram of portable pipe material pipe fitting air tightness detection device.

[0020] Figure 3 It is the mounting piece structure diagram of portable pipe material pipe fitting air tightness detection device.

[0021] Figure 4 It is the connecting block and connecting rod structure diagram of portable pipe material pipe fitting air tightness detection device.

[0022] Figure 5 It is the connecting piece structure diagram of portable pipe material pipe fitting air tightness detection device.

[0023] Figure 6 It is Figure 4 It is the enlarged structure diagram of A shown.

[0024] Figure 7 It is the pump body and pressure pump structure diagram of portable pipe material pipe fitting air tightness detection device.

[0025] The figure label: 100, main body assembly; 101, frame; 102, air tightness detector; 103, connecting pipe; 104, high-pressure hose; 105, driving piece; 105a, motor; 105b, rotating rod; 106, mounting piece; 106a, fixing frame; 106b, mounting column; 106c, moving plate; 106d, positioning frame; 107, transmission piece; 107a, gear; 107b, toothed plate; 108, limiting piece; 108a, sliding column; 108b, limiting groove; 109, connecting piece; 109a, first connecting plate; 109b, second connecting plate; 109c, lifting plate; 110, base; 111, pump body; 112, hand pressure rod; 113, pressure gauge; 114, filter screen; 115, switching valve; 116, pressure relief valve; 117, stop valve; 118, air pressure fine adjustment pump; 119, fine adjustment rotating rod; 120, air pressure output port; 121, standard type interface; 200, disassembly assembly; 201, clamping ring; 202, connecting block; 203, connecting rod; 204, sleeve rod; 205, sliding rod; 206, moving block; 207, clamping block; 208, notch; 209, clamping piece; 209a, mounting rod; 209b, moving rod; 209c, positioning block; 209d, limiting block. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0027] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0028] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent or alternative to other embodiments.

[0029] Embodiment 1

[0030] Reference Figures 1-7 For the first embodiment of the present application, the embodiment provides a portable pipe and pipe fitting air tightness detection device, which comprises a main body assembly 100 and a disassembly assembly 200, which can conveniently clamp the pipeline and conveniently disassemble the clamping ring 201 clamping the pipeline.

[0031] The main body assembly 100 comprises a frame 101, an air tightness detector 102, a connecting pipe 103, a high-pressure hose 104, a driving part 105, a mounting part 106, a transmission part 107, a limiting part 108, a connecting part 109, a base 110, a pump body 111, a hand lever 112, a pressure gauge 113, a filter screen 114, a switching valve 115, a pressure relief valve 116, a stop valve 117, an air pressure fine adjustment pump 118, a fine adjustment rotary rod 119, an air pressure output port 120 and a standard type interface 121. The air tightness detector 102 is mounted on the inner wall of the frame 101. One end of the connecting pipe 103 is communicated with the air tightness detector 102. The high-pressure hose 104 is arranged above the frame 101. The driving part 105 is arranged in the inner cavity of the frame 101. The mounting part 106 is arranged in the inner cavity of the frame 101. The transmission part 107 is arranged on one side of the driving part 105. The limiting part 108 is arranged in the inner cavity of the frame 101. The connecting part 109 is arranged on one side of the mounting part 106. The base 110 is fixed on the top of the frame 101. The pump body 111 is mounted on the top of the base 110. The hand lever 112 is arranged on one side of the pump body 111. The pressure gauge 113 is arranged on the top of the base 110. The filter screen 114 is mounted in the inner cavity of the base 110. The switching valve 115 is communicated with the inner wall of the pump body 111. The pressure relief valve 116 is communicated with the inner wall of the base 110. The stop valve 117 is communicated with the inner wall of the pump body 111. The air pressure fine adjustment pump 118 is arranged on the top of the base 110. The fine adjustment rotary rod 119 is arranged on the top of the air pressure fine adjustment pump 118. The air pressure output port 120 is communicated with the inner wall of the base 110. The standard type interface 121 is mounted on one end of the high-pressure hose 104.

[0032] By arranging the frame 101, the air tightness detector 102 can be conveniently installed. By arranging the air tightness detector 102, the connecting pipe 103 can be conveniently communicated. The sealing performance of the pipe and pipe fitting can be detected to ensure that it has no leakage and to ensure product quality. The instrument adopts non-contact gas pressure loading technology to realize non-destructive testing, which is simple to operate and accurate in result. It is an indispensable detection tool in industrial manufacturing. By arranging the connecting pipe 103, the air tightness detector 102 can be conveniently communicated. The hand lever 112 serves as a power source and is first operated to generate air pressure. After the air pressure is purified by the filter screen 114 on the base 110, it enters the stop valve 117 for control. When the air pressure reaches a certain degree, the pressure relief valve 116 will automatically open to release excess pressure. Then, the high-pressure hose 104 transmits the air pressure to the standard sample interface. In this process, the switching valve 115 can be used to select different air pressure output paths. The standard pressure gauge 113 is used for real-time monitoring of the air pressure value. The air pressure fine adjustment pump 118 allows fine adjustment of the air pressure. The fine adjustment rotary rod 119 is a key component on the air pressure fine adjustment pump 118. By rotating the fine adjustment rotary rod 119, fine adjustment of the air pressure output can be realized. This series of operation processes ensures the stability and accuracy of the air pressure output.

[0033] The disassembling assembly 200 is arranged below the main body assembly 100, comprising a clamping ring 201, a connecting block 202, a connecting rod 203, a sleeve rod 204, a sliding rod 205, a moving block 206, a clamping block 207, a notch 208 and a clamping piece 209, the clamping ring 201 is arranged in the inner cavity of the frame 101, the connecting block 202 is arranged below the clamping ring 201, the connecting rod 203 is fixed to the bottom of the connecting block 202, the sleeve rod 204 is fixed to the inner wall of the connecting block 202, the sliding rod 205 is slidably arranged in the inner wall of the sleeve rod 204, the moving block 206 is fixed to the top of the sliding rod 205, the clamping block 207 is fixed to one side of the moving block 206, the notch 208 is arranged in the inner wall of the clamping ring 201, and the clamping piece 209 is arranged in the inner cavity of the connecting block 202.

[0034] The clamping ring 201 can clamp the pipe, the connecting block 202 can fix the sleeve rod 204, the connecting rod 203 can connect the connecting block 202, the sleeve rod 204 can slide the sliding rod 205, the spring fixed to the inner wall of the sleeve rod 204 can reset the sliding rod 205, the sliding rod 205 can fix the moving block 206, the moving block 206 can fix the clamping block 207, the clamping block 207 can clamp the clamping ring 201, and the notch 208 can pass through the clamping block 207.

[0035] Embodiment 2

[0036] Referring to Figure 3 and Figure 4 This is the second embodiment of the utility model, and is based on the previous embodiment.

[0037] Specifically, the driving member 105 comprises a motor 105a and a rotating rod 105b, the motor 105a is fixed to the inner wall of the frame 101, and the rotating rod 105b is fixed to the output end of the motor 105a.

[0038] The motor 105a can rotate the rotating rod 105b, and the rotating rod 105b can rotate the gear 107a.

[0039] Specifically, the mounting member 106 further comprises a fixing frame 106a and a mounting column 106b, the fixing frame 106a is fixed to the inner wall of the frame 101, and the mounting column 106b is fixed to the inner wall of the fixing frame 106a.

[0040] The fixing frame 106a can fix the mounting column 106b, and the mounting column 106b can slide the moving plate 106c.

[0041] Specifically, the mounting piece 106 comprises a moving plate 106c and a positioning frame 106d, the moving plate 106c is slid on the outside of the mounting column 106b, and the positioning frame 106d is clamped on one side of the moving plate 106c.

[0042] By setting the moving plate 106c, the positioning frame 106d can be clamped conveniently.

[0043] Specifically, the transmission piece 107 comprises a gear 107a and a toothed plate 107b, the gear 107a is fixed on the outside of the rotating rod 105b, the toothed plate 107b is engaged on the outside of the gear 107a, and one side of the toothed plate 107b is fixedly connected with the inner wall of the positioning frame 106d.

[0044] By setting the gear 107a, the toothed plate 107b can be moved conveniently.

[0045] Specifically, the limiting piece 108 comprises a sliding column 108a and a limiting groove 108b, the sliding column 108a is fixed on the inner wall of the frame body 101, and the limiting groove 108b is formed in the inner wall of the frame body 101.

[0046] By setting the sliding column 108a, the moving plate 106c can be limited when sliding.

[0047] Specifically, the connecting piece 109 comprises a first connecting plate 109a and a second connecting plate 109b, the first connecting plate 109a is fixed on one side of the moving plate 106c, and the second connecting plate 109b is fixed on one side of the moving plate 106c.

[0048] By setting the first connecting plate 109a, the lifting plate 109c can be connected conveniently.

[0049] Specifically, the connecting piece 109 further comprises a lifting plate 109c, the lifting plate 109c is fixed on one side of the first connecting plate 109a, and one side of the lifting plate 109c is fixedly connected with one side of the second connecting plate 109b.

[0050] By setting the lifting plate 109c, the connecting rod 203 on the other side can be connected conveniently.

[0051] Embodiment 3

[0052] With reference to Figure 6 For the third embodiment of the utility model, the embodiment is based on the first two embodiments.

[0053] Specifically, the clamping piece 209 comprises a mounting rod 209a and a moving rod 209b, the mounting rod 209a is fixed to the inner wall of the connecting block 202, and the moving rod 209b slides in the inner wall of the mounting rod 209a.

[0054] By setting the mounting rod 209a, the moving rod 209b can be conveniently slid. By setting the moving rod 209b, the positioning block 209c can be conveniently fixed.

[0055] Specifically, the clamping piece 209 further comprises a positioning block 209c and a limiting block 209d, the positioning block 209c is fixed to the top of the moving rod 209b, the limiting block 209d is fixed to one side of the positioning block 209c, and the outer side of the limiting block 209d is clamped with the inner wall of the clamping ring 201.

[0056] By setting the positioning block 209c, the limiting block 209d can be conveniently fixed. By setting the limiting block 209d, the clamping ring 201 can be conveniently clamped.

[0057] In use, the staff first places the pipe in the middle of the two sets of clamping rings 201, at which time the motor 105a is turned on, the motor 105a rotates to drive the rotating rod 105b to rotate, the rotating rod 105b rotates to drive the gear 107a to rotate, the gear 107a rotates to drive the toothed plate 107b to rotate, the toothed plate 107b rotates to drive the positioning frame 106d to move upwards, the positioning frame 106d moves to drive the moving plate 106c to move upwards, the moving plate 106c moves to drive the connecting rod 203 to move upwards, the connecting rod 203 moves to drive the connecting block 202 to move upwards, the connecting block 202 moves to drive the clamping ring 201 to move upwards, and the other set will be driven by the rotation of the gear 107a to move the toothed plate 107b downwards, the two sets form opposite operation, clamp the pipe, and detect the one end connected by the high-pressure hose 104 to the pipe body, and when it is necessary to disassemble the clamping ring 201, the clamping block 207 is moved to the right, the limiting block 209d is moved to the left, and the two springs are matched by the reaction force of the two springs. When the clamping block 207 and the limiting block 209d move, they contact the limiting of the clamping ring 201, at which time the clamping ring 201 can be taken out, the hand pressure rod 112 is used as a power source, which is first operated to generate air pressure, and the air pressure is purified through the filter screen 114 on the base 110 and then enters the stop valve 117 for control. When the air pressure reaches a certain degree, the pressure relief valve 116 will automatically open to release excess pressure, then the high-pressure hose 120 transmits the air pressure to the standard sample interface, in this process, the switch valve 115 can be used to select different air pressure output paths, the standard pressure gauge 113 is used to monitor the air pressure value in real time, and the air pressure fine adjustment pump 118 allows the air pressure to be finely adjusted. The fine adjustment rotating rod 119 is a key component on the air pressure fine adjustment pump 118, and by rotating the fine adjustment rotating rod 119, the fine adjustment of the air pressure output can be realized, and this series of operation processes ensures the stability and accuracy of the air pressure output.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A convenient pipe and fitting airtightness testing device, characterized in that: The utility model relates to a kind of air-tightness detector, including, Main body assembly (100), including frame (101), air-tightness detector (102), connecting pipe (103), high-pressure hose (104), driving part (105), mounting part (106), transmission part (107), limiting part (108), connecting part (109), base (110), pump body (111), hand lever (112), pressure gauge (113), filter screen (114), switching valve (115), pressure relief valve (116), stop valve (117), air pressure fine adjustment pump (118), fine adjustment rotary lever (119), air pressure output (120) and standard style interface (121), the air-tightness detector (102) is installed in the inner wall of the frame (101), the connecting pipe (103) is communicated with one end of the air-tightness detector (102), the high-pressure hose (104) is set on the frame (101), the driving part (105) is set in the inner chamber of the frame (101), the mounting part (106) is set in the inner chamber of the frame (101), the transmission part (107) is set in one side of the driving part (105), the limiting part (108) is set in the inner chamber of the frame (101), the connecting part (109) is set in one side of the mounting part (106), the base (110) is fixed on the top of the frame (101), the pump body (111) is installed on the top of the base (110), the hand lever (112) is set in one side of the pump body (111), the pressure gauge (113) is set on the top of the base (110), the filter screen (114) is installed in the inner chamber of the base (110), the switching valve (115) is communicated in the inner wall of the pump body (111), the pressure relief valve (116) is communicated in the inner wall of the base (110), the stop valve (117) is communicated in the inner wall of the pump body (111), the air pressure fine adjustment pump (118) is set on the top of the base (110), the fine adjustment rotary lever (119) is set on the top of the air pressure fine adjustment pump (118), the air pressure output (120) is communicated in the inner wall of the base (110), the standard style interface (121) is installed in one end of the high-pressure hose (104);And, The dismounting assembly (200) is arranged below the main body assembly (100), comprising a clamping ring (201), a connecting block (202), a connecting rod (203), a sleeve rod (204), a sliding rod (205), a moving block (206), a clamping block (207), a notch (208) and a clamping piece (209), the clamping ring (201) is arranged in the inner cavity of the frame (101), the connecting block (202) is arranged below the clamping ring (201), the connecting rod (203) is fixed to the bottom of the connecting block (202), the sleeve rod (204) is fixed to the inner wall of the connecting block (202), the sliding rod (205) is slid on the inner wall of the sleeve rod (204), the moving block (206) is fixed to the top of the sliding rod (205), the clamping block (207) is fixed to one side of the moving block (206), the notch (208) is arranged on the inner wall of the clamping ring (201), and the clamping piece (209) is arranged in the inner cavity of the connecting block (202).

2. The portable pipe and pipe fitting air tightness testing device of claim 1, wherein: The driving piece (105) comprises a motor (105a) and a rotating rod (105b), the motor (105a) is fixed to the inner wall of the frame (101), and the rotating rod (105b) is fixed to the output end of the motor (105a).

3. The portable pipe and pipe fitting leak tightness testing device of claim 1, wherein: The mounting piece (106) further comprises a fixing frame (106a) and a mounting column (106b), the fixing frame (106a) is fixed to the inner wall of the frame (101), and the mounting column (106b) is fixed to the inner wall of the fixing frame (106a).

4. The portable apparatus for testing the gas tightness of a pipe and a pipe fitting according to claim 3, wherein: The mounting piece (106) comprises a moving plate (106c) and a positioning frame (106d), the moving plate (106c) slides on the outer side of the mounting column (106b), and the positioning frame (106d) is clamped on one side of the moving plate (106c).

5. The portable apparatus for testing the gas tightness of a pipe and a pipe fitting according to claim 2, wherein: The transmission piece (107) comprises a gear (107a) and a toothed plate (107b), the gear (107a) is fixed to the outer side of the rotating rod (105b), the toothed plate (107b) is engaged on the outer side of the gear (107a), and one side of the toothed plate (107b) is fixedly connected with the inner wall of the positioning frame (106d).

6. The portable apparatus for testing the gas tightness of a pipe and a pipe fitting according to claim 5, wherein: The limiting piece (108) comprises a sliding column (108a) and a limiting groove (108b), the sliding column (108a) is fixed to the inner wall of the frame (101), and the limiting groove (108b) is arranged on the inner wall of the frame (101).

7. The portable apparatus for testing the gas tightness of a pipe and a pipe fitting according to claim 4, wherein: The connecting piece (109) comprises a first connecting plate (109a) and a second connecting plate (109b), the first connecting plate (109a) is fixed to one side of the moving plate (106c), and the second connecting plate (109b) is fixed to one side of the moving plate (106c).

8. The portable pipe and pipe fitting leak tightness testing device of claim 7, wherein: The connecting piece (109) further comprises a lifting plate (109c) fixed to one side of the first connecting plate (109a), and one side of the lifting plate (109c) is fixedly connected with one side of the second connecting plate (109b).

9. The portable apparatus for testing the gas tightness of a pipe and a pipe fitting according to claim 1, wherein: The clamping piece (209) comprises a mounting rod (209a) and a moving rod (209b), the mounting rod (209a) is fixed to the inner wall of the connecting block (202), and the moving rod (209b) slides in the inner wall of the mounting rod (209a).

10. The portable apparatus for testing the gas tightness of a pipe and a pipe fitting according to claim 9, wherein: The clamping piece (209) further comprises a positioning block (209c) and a limiting block (209d), the positioning block (209c) is fixed to the top of the moving rod (209b), the limiting block (209d) is fixed to one side of the positioning block (209c), and the outer side of the limiting block (209d) is clamped with the inner wall of the clamping ring (201).

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