CN218895888U - Portable pressure testing tool of injection formula - Google Patents

Abstract

An injection type portable pressure testing tool relates to the technical field of pressure testing, and the technical scheme is as follows: the device comprises a syringe and a connecting piece, wherein an outlet of the syringe is connected with an inlet of the connecting piece, a first outlet of the connecting piece is connected with a hose, a connecting joint connected with a pressure instrument is connected to an outlet of the hose, and a second outlet of the connecting piece is connected with a pressure gauge. The beneficial effects of this technical scheme are: in the pressure testing process of the pressure instrument, the pressurizing testing work of the instrument can be simply and rapidly finished under the conditions that the instrument is not dismantled, a designated laboratory is not taken, and the workload is not increased, and during the measurement, only a worker pushes the push-pull rod to generate positive and negative pressure, so that the increasing or pressure releasing function is realized, and the working efficiency is improved.

Description

Portable pressure testing tool of injection formula

Technical Field

The utility model relates to the technical field of pressure testing, in particular to an injection type portable pressure testing tool.

Background

In the related thermodynamic systems such as electric power construction, power plant operation and maintenance, chemical plants and the like, the pressure measuring instrument is singly debugged or tested; when the instrument pressure or loop is tested, the instrument is required to be removed and then taken to a designated laboratory, a pressure tester is used for testing or a testing tool is taken to the site for measuring the pressure instrument, firstly, the instrument is removed and the instrument is moved back and forth, so that the accuracy of the measuring instrument is influenced; depending on the size and type of project, the pressure measurement instruments of each project or system are hundreds of meters or more, and the workload is large, so that it is unreliable to take laboratory testers to the site for testing.

The application number is: 201621379001.2 discloses a quick test manometer device, especially discloses including manometer, gas circuit board and quick test interface, wherein: the gas circuit board is tightly connected with the rapid test interface; the air circuit board is tightly connected with the pressure gauge; the air outlet of the air outlet channel of the air circuit board is in seamless combination with the air inlet of the pressure gauge; the quick test interface comprises an air inlet channel, a valve body and a valve core, wherein the valve core is arranged inside the valve body, so that the online detection of the pressure gauge is realized, and the damage caused by repeated disassembly of the pressure gauge is avoided.

However, the application also needs corresponding equipment such as gas circuits, electric power construction, operation and maintenance of a power plant and the position of a pressure measuring instrument of a chemical plant, has poor site conditions, does not have equipment such as an air source, is inconvenient to detect, and meanwhile, a laboratory measuring tool is large and cannot be taken to the site for use.

Disclosure of Invention

The utility model aims to overcome the defects that the existing pressure measuring instrument needs to be taken to a laboratory for measurement, the accuracy of the pressure measuring instrument is affected, the quantity is excessive, the back and forth carrying measuring efficiency is low, and the measuring efficiency is reduced.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an injection type portable pressure testing tool, includes syringe and connecting piece, the export of syringe and the access connection of connecting piece, and the first exit linkage of connecting piece has the hose, is connected with the attach fitting who is connected with the pressure instrument on the export of hose, and the second exit linkage of connecting piece has the manometer.

The injector, the connecting piece and the hose are communicated with the instrument to be measured, when the device is used, the injector generates pressure and is conveyed to the inside of the instrument to be measured, at the moment, whether the value of the instrument to be measured is identical with that of the pressure gauge is determined, the device is convenient to carry, workers can detect the device on site, and the detection efficiency is improved.

Preferably, the injector comprises an outer cylinder, a sealing piston is arranged in the outer cylinder, a push-pull rod is fixedly arranged on one side surface of the sealing piston, and the push-pull rod penetrates through the side wall of the outer cylinder and extends to one side of the outer cylinder.

The push-pull rod generates positive and negative pressure under the push-pull action.

Preferably, the outlet of the injector is connected with a connecting column, the connecting column is communicated with the injector, the first outlet, the second outlet and the inlet of the connecting piece are all provided with internal thread connecting holes, the connecting column is in threaded connection with the inlet, and the second outlet of the connecting piece is in threaded connection with the joint of the pressure gauge.

The first export, the second export and the import of connecting piece pass through threaded connection, can guarantee the leakproofness when examining, easy to assemble and dismantlement simultaneously to convenient later stage carries.

Preferably, one end of the hose is connected with a quick connector, and one end of the quick connector is connected with the first outlet of the connecting piece through threads.

The quick connector is convenient for connecting the hose and the connecting piece, and the tightness during connection is ensured.

Preferably, the hose is made of a flexible plastic material with a diameter of 10 x 1.5mm, and can bear a pressure of 1 MPa.

Preferably, the outer wall of the sealing piston is sleeved with a sealing ring, the sealing ring is abutted with the inner wall of the outer cylinder, and the sealing piston is made of rubber.

The sealing ring seals the position of the sealing piston, which is abutted with the outer cylinder, firmly, so that the situation that gas leakage is caused during detection and measurement is inaccurate is avoided.

Compared with the prior art, the utility model has the beneficial effects that: in the pressure testing process of the pressure instrument, the pressurizing testing work of the instrument can be simply and rapidly finished under the conditions that the instrument is not dismantled, a designated laboratory is not taken, and the workload is not increased, and during the measurement, only a worker pushes the push-pull rod to generate positive and negative pressure, so that the increasing or pressure releasing function is realized, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a sealing piston according to an embodiment of the present utility model.

Fig. 3 is a front view of a sealing piston in an embodiment of the utility model.

In the figure: 1 injector, 2 connector, 3 quick connector, 4 pressure gauge, 5 hose, 10 push-pull rod, 11 urceolus, 12 sealing piston, 13 sealing washer.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

Referring to fig. 1-3, an injection type portable pressure testing tool comprises an injector 1 and a connecting piece 2, wherein an outlet of the injector 1 is connected with an inlet of the connecting piece 2, and when positive pressure or negative pressure is needed by the injector 1, a push-pull rod is pushed by manpower to generate positive and negative pressures, so that the function of increasing or relieving pressure is realized; the maximum positive pressure position of the stainless steel pressure injector is 0.8MPa, the maximum negative pressure is-0.09 MPa, a hose 5 is connected to a first outlet of the connecting piece 2, the hose 5 is made of phi 10 x 1.5mm flexible plastic and can bear 1MPa pressure, a connecting joint connected with a pressure meter is connected to an outlet of the hose 5, a pressure meter 4 is connected to a second outlet of the connecting piece 2, the pressure meter 4 displays the range of +0.8MPa to-0.1 MPa, the pressure meter 4 adopts a standard pressure meter and is used for displaying the internal pressure value in the working state, a standard pressure meter interface adopts a 1/8NPT external wire, the injector 1, the connecting piece 2 and the hose 5 are communicated with the meter to be measured, the pressure generated by the injector 1 is conveyed to the meter to be measured when the pressure meter is used, and whether the value of the meter to be measured is identical with the value of the pressure meter 4 is determined.

Referring to fig. 1 to 3, the injector 1 comprises an outer cylinder 11, the outer cylinder 11 is made of stainless steel, the maximum positive pressure of the stainless steel pressure injector is 0.8MPa, the maximum negative pressure is-0.09 MPa, a sealing ring 13 is sleeved on the outer wall of a sealing piston 12, the sealing ring 13 is abutted to the inner wall of the outer cylinder 11, the sealing piston 12 is made of rubber, a sealing piston 12 is arranged in the outer cylinder 11, a push-pull rod 10 is fixedly arranged on one side surface of the sealing piston 12, the push-pull rod 10 penetrates through the side wall of the outer cylinder 11 and extends to one side of the outer cylinder 11, the sealing ring 13 seals the abutting position of the sealing piston 12 and the outer cylinder 11 firmly, the situation that the measurement is inaccurate due to gas leakage during detection is avoided, a clamping groove is formed in the surface of the sealing piston 12, therefore, the two sides of the sealing piston 12 and the outer cylinder 11 are distinguished, one end of the rod 10 is fixedly arranged on the surface of the sealing piston 12, one end of the rod 10 penetrates through the side wall of the outer cylinder 11 and extends to one side of the push-pull rod 11, and the push-pull rod 10 generates positive and negative pressure under the push-pull action.

Referring to fig. 1, an outlet of the injector 1 is connected with a connecting column, the connecting column is communicated with the injector 1, a first outlet, a second outlet and an inlet of the connecting piece 2 are all provided with 1/8NPT internal thread connecting holes, the connecting column is in threaded connection with the inlet, a second outlet of the connecting piece 2 is in threaded connection with a joint of the pressure gauge 4, one end of the hose 5 is connected with a quick connector 3 with the diameter of 1/8NPT external thread-phi 10mm, one end of the quick connector 3 is in threaded connection with a first outlet of the connecting piece 2, and the first outlet, the second outlet and the inlet of the connecting piece 2 are in threaded connection, so that tightness in detection can be ensured.

The hose 5 and the connecting joint of the measuring instrument are generally provided with eight common types of connecting joints, and the connecting joint can be installed on any pressure instrument equipment to be tested; the eight types are respectively one: Φ10×1.5mm-1/8NPT, two: Φ10×1.5mm-1/6NPT, three: Φ10×1.5mm-1/4NPT, four: Φ10×1.5mm-1/2NPT, five: Φ10×1.5mm-6×1.0mm, six: Φ10 x 1.5mm-8 x 1.0mm, seven: Φ10×1.5mm-10×1.0mm, eight: Φ10×1.5mm12×1.5mm, these connectors facilitate the connection to the interface of the pressure gauge.

When the pressure meter is in use, when the pressure meter needs to be pressurized and tested, the sealing piston 12 and the push-pull rod 10 are firstly placed in the outer cylinder 11, after the injector 1 is assembled, the connecting column of the injector 1 and the inlet of the connecting piece 2 are connected through threads, then the hose 5 is connected with the connecting piece 2 through the quick connector 3, after the equipment is assembled, the pressure interface size of the pressure meter to be tested is checked, the proper connectors are selected from the connectors of various types and are mounted on the pressure meter to be tested, the assembled equipment is connected with the hose 4 and is inserted on the mounted connectors, finally, positive pressure is pushed and formed as required, negative pressure is formed by pulling outwards, the numerical value of the pressure meter 4 is observed to be consistent with that of the pressure meter to be tested, and as the tool is pushed or pulled to generate positive and negative pressure, when the positive and negative pressures are switched, the hose 5 is required to be pulled off for switching.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. An injection type portable pressure testing tool comprises an injector (1) and a connecting piece (2), and is characterized in that: the outlet of the injector (1) is connected with the inlet of the connecting piece (2), the first outlet of the connecting piece (2) is connected with a hose (5), the outlet of the hose (5) is connected with a connecting joint connected with a pressure instrument, and the second outlet of the connecting piece (2) is connected with a pressure gauge (4).

2. The injection portable pressure testing tool of claim 1, wherein: the injector (1) comprises an outer cylinder (11), a sealing piston (12) is arranged in the outer cylinder (11), a push-pull rod (10) is fixedly arranged on one side surface of the sealing piston (12), and the push-pull rod (10) penetrates through the side wall of the outer cylinder (11) and extends to one side of the outer cylinder (11).

3. The injection portable pressure testing tool of claim 1, wherein: the outlet of the injector (1) is connected with a connecting column, the connecting column is communicated with the injector (1), the first outlet, the second outlet and the inlet of the connecting piece (2) are all provided with internal thread connecting holes, the connecting column is in threaded connection with the inlet, and the second outlet of the connecting piece (2) is in threaded connection with a joint of the pressure gauge (4).

4. The injection portable pressure testing tool according to claim 3, wherein: one end of the hose (5) is connected with a quick connector (3), and one end of the quick connector (3) is connected with a first outlet of the connecting piece (2) through threads.

5. The injection portable pressure testing tool of claim 1, wherein: the hose (5) is made of flexible plastic with phi of 10 x 1.5mm and can bear the pressure of 1 MPa.

6. The injection portable pressure testing tool according to claim 2, wherein: the outer wall of the sealing piston (12) is sleeved with a sealing ring (13), the sealing ring (13) is abutted against the inner wall of the outer cylinder (11), and the sealing piston (12) is made of rubber.

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